Add support for Float64Array.

Cherry pick from WebKit r87197 to add support for
Float64Array. Note that this requires at least V8 3.3.

In particular, this CL means that we will consume less
memory executing Emscripten code.

See http://trac.webkit.org/changeset/87197/

Bug: 5558474

Change-Id: I686d59acfdb56d03496f407d114826f35b4ff2c8

16 files changed, 323 insertions, 0 deletions

diff --git a/Source/WebCore/Android.derived.jscbindings.mk b/Source/WebCore/Android.derived.jscbindings.mk
index d859b15..f48fc6a 100644
--- a/Source/WebCore/Android.derived.jscbindings.mk
+++ b/Source/WebCore/Android.derived.jscbindings.mk
@@ -316,6 +316,7 @@ GEN := \
     $(intermediates)/html/canvas/JSCanvasRenderingContext2D.h \
     $(intermediates)/html/canvas/JSDataView.h \
     $(intermediates)/html/canvas/JSFloat32Array.h \
+    $(intermediates)/html/canvas/JSFloat64Array.h \
     $(intermediates)/html/canvas/JSInt8Array.h \
     $(intermediates)/html/canvas/JSInt16Array.h \
     $(intermediates)/html/canvas/JSInt32Array.h \
diff --git a/Source/WebCore/Android.derived.v8bindings.mk b/Source/WebCore/Android.derived.v8bindings.mk
index 992cc40..546cefe 100644
--- a/Source/WebCore/Android.derived.v8bindings.mk
+++ b/Source/WebCore/Android.derived.v8bindings.mk
@@ -301,6 +301,7 @@ GEN := \
     $(intermediates)/bindings/V8CanvasRenderingContext2D.h \
     $(intermediates)/bindings/V8DataView.h \
     $(intermediates)/bindings/V8Float32Array.h \
+    $(intermediates)/bindings/V8Float64Array.h \
     $(intermediates)/bindings/V8Int8Array.h \
     $(intermediates)/bindings/V8Int16Array.h \
     $(intermediates)/bindings/V8Int32Array.h \
diff --git a/Source/WebCore/Android.jscbindings.mk b/Source/WebCore/Android.jscbindings.mk
index bdd6d92..09ea61c 100644
--- a/Source/WebCore/Android.jscbindings.mk
+++ b/Source/WebCore/Android.jscbindings.mk
@@ -121,6 +121,7 @@ LOCAL_SRC_FILES += \
 	bindings/js/JSEventTarget.cpp \
 	bindings/js/JSExceptionBase.cpp \
 	bindings/js/JSFloat32ArrayCustom.cpp \
+	bindings/js/JSFloat64ArrayCustom.cpp \
 	bindings/js/JSFileReaderCustom.cpp \
 	bindings/js/JSGeolocationCustom.cpp \
 	bindings/js/JSHTMLAllCollectionCustom.cpp \
diff --git a/Source/WebCore/Android.mk b/Source/WebCore/Android.mk
index 6d43300..aa8ffe6 100644
--- a/Source/WebCore/Android.mk
+++ b/Source/WebCore/Android.mk
@@ -378,6 +378,7 @@ LOCAL_SRC_FILES := $(LOCAL_SRC_FILES) \
 	html/canvas/CanvasStyle.cpp \
 	html/canvas/DataView.cpp \
 	html/canvas/Float32Array.cpp \
+	html/canvas/Float64Array.cpp \
 	html/canvas/Int16Array.cpp \
 	html/canvas/Int32Array.cpp \
 	html/canvas/Int8Array.cpp \
diff --git a/Source/WebCore/Android.v8bindings.mk b/Source/WebCore/Android.v8bindings.mk
index 283a212..7858ef3 100644
--- a/Source/WebCore/Android.v8bindings.mk
+++ b/Source/WebCore/Android.v8bindings.mk
@@ -130,6 +130,7 @@ LOCAL_SRC_FILES += \
 	bindings/v8/custom/V8EventSourceConstructor.cpp \
 	bindings/v8/custom/V8FileReaderCustom.cpp \
 	bindings/v8/custom/V8Float32ArrayCustom.cpp \
+	bindings/v8/custom/V8Float64ArrayCustom.cpp \
 	bindings/v8/custom/V8GeolocationCustom.cpp \
 	bindings/v8/custom/V8HistoryCustom.cpp \
 	bindings/v8/custom/V8HTMLAllCollectionCustom.cpp \
diff --git a/Source/WebCore/DerivedSources.cpp b/Source/WebCore/DerivedSources.cpp
index 3bba78c..45a425c 100644
--- a/Source/WebCore/DerivedSources.cpp
+++ b/Source/WebCore/DerivedSources.cpp
@@ -130,6 +130,7 @@
 #include "JSFileWriterSync.cpp"
 #include "JSWebKitFlags.cpp"
 #include "JSFloat32Array.cpp"
+#include "JSFloat64Array.cpp"
 #include "JSGeolocation.cpp"
 #include "JSGeoposition.cpp"
 #include "JSHashChangeEvent.cpp"
diff --git a/Source/WebCore/bindings/js/JSBindingsAllInOne.cpp b/Source/WebCore/bindings/js/JSBindingsAllInOne.cpp
index a457ce8..82367b2 100644
--- a/Source/WebCore/bindings/js/JSBindingsAllInOne.cpp
+++ b/Source/WebCore/bindings/js/JSBindingsAllInOne.cpp
@@ -81,6 +81,7 @@
 #include "JSEventTarget.cpp"
 #include "JSExceptionBase.cpp"
 #include "JSFloat32ArrayCustom.cpp"
+#include "JSFloat64ArrayCustom.cpp"
 #include "JSGeolocationCustom.cpp"
 #include "JSHTMLAllCollectionCustom.cpp"
 #include "JSHTMLAppletElementCustom.cpp"
diff --git a/Source/WebCore/bindings/js/JSDOMWindowCustom.cpp b/Source/WebCore/bindings/js/JSDOMWindowCustom.cpp
index 4bde9e5..938be96 100644
--- a/Source/WebCore/bindings/js/JSDOMWindowCustom.cpp
+++ b/Source/WebCore/bindings/js/JSDOMWindowCustom.cpp
@@ -31,6 +31,7 @@
 #include "JSEventListener.h"
 #include "JSEventSource.h"
 #include "JSFloat32Array.h"
+#include "JSFloat64Array.h"
 #include "JSHTMLCollection.h"
 #include "JSHistory.h"
 #include "JSImageConstructor.h"
@@ -569,6 +570,11 @@ JSValue JSDOMWindow::float32Array(ExecState* exec) const
     return getDOMConstructor<JSFloat32ArrayConstructor>(exec, this);
 }
 
+JSValue JSDOMWindow::float64Array(ExecState* exec) const 
+{ 
+    return getDOMConstructor<JSFloat64ArrayConstructor>(exec, this); 
+} 
+
 JSValue JSDOMWindow::dataView(ExecState* exec) const
 {
     return getDOMConstructor<JSDataViewConstructor>(exec, this);
diff --git a/Source/WebCore/bindings/js/JSFloat64ArrayCustom.cpp b/Source/WebCore/bindings/js/JSFloat64ArrayCustom.cpp
new file mode 100644
index 0000000..446b0ec
--- /dev/null
+++ b/Source/WebCore/bindings/js/JSFloat64ArrayCustom.cpp
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "JSFloat64Array.h"
+
+#include "Float64Array.h"
+#include "JSArrayBufferViewHelper.h"
+
+using namespace JSC;
+
+namespace WebCore {
+
+void JSFloat64Array::indexSetter(JSC::ExecState* exec, unsigned index, JSC::JSValue value)
+{
+    impl()->set(index, value.toNumber(exec));
+}
+
+JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, Float64Array* object)
+{
+    return toJSArrayBufferView<JSFloat64Array>(exec, globalObject, object);
+}
+
+JSC::JSValue JSFloat64Array::set(JSC::ExecState* exec)
+{
+    return setWebGLArrayHelper(exec, impl(), toFloat64Array);
+}
+
+EncodedJSValue JSC_HOST_CALL JSFloat64ArrayConstructor::constructJSFloat64Array(ExecState* exec)
+{
+    JSFloat64ArrayConstructor* jsConstructor = static_cast<JSFloat64ArrayConstructor*>(exec->callee());
+    RefPtr<Float64Array> array = constructArrayBufferView<Float64Array, double>(exec);
+    if (!array.get())
+        // Exception has already been thrown.
+        return JSValue::encode(JSValue());
+    return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), array.get())));
+}
+
+} // namespace WebCore
diff --git a/Source/WebCore/bindings/v8/custom/V8Float64ArrayCustom.cpp b/Source/WebCore/bindings/v8/custom/V8Float64ArrayCustom.cpp
new file mode 100644
index 0000000..429e962
--- /dev/null
+++ b/Source/WebCore/bindings/v8/custom/V8Float64ArrayCustom.cpp
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2011 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "Float64Array.h"
+
+#include "ArrayBuffer.h"
+#include "V8ArrayBuffer.h"
+#include "V8ArrayBufferViewCustom.h"
+#include "V8Binding.h"
+#include "V8Float64Array.h"
+#include "V8Proxy.h"
+
+namespace WebCore {
+
+v8::Handle<v8::Value> V8Float64Array::constructorCallback(const v8::Arguments& args)
+{
+    INC_STATS("DOM.Float64Array.Contructor");
+
+    return constructWebGLArray<Float64Array, double>(args, &info, v8::kExternalDoubleArray);
+}
+
+v8::Handle<v8::Value> V8Float64Array::setCallback(const v8::Arguments& args)
+{
+    INC_STATS("DOM.Float64Array.set()");
+    return setWebGLArrayHelper<Float64Array, V8Float64Array>(args);
+}
+
+v8::Handle<v8::Value> toV8(Float64Array* impl)
+{
+    if (!impl)
+        return v8::Null();
+    v8::Handle<v8::Object> wrapper = V8Float64Array::wrap(impl);
+    if (!wrapper.IsEmpty())
+        wrapper->SetIndexedPropertiesToExternalArrayData(impl->baseAddress(), v8::kExternalDoubleArray, impl->length());
+    return wrapper;
+}
+
+} // namespace WebCore
diff --git a/Source/WebCore/html/canvas/ArrayBufferView.h b/Source/WebCore/html/canvas/ArrayBufferView.h
index 701abbc..d06fc8d 100644
--- a/Source/WebCore/html/canvas/ArrayBufferView.h
+++ b/Source/WebCore/html/canvas/ArrayBufferView.h
@@ -46,6 +46,7 @@ class ArrayBufferView : public RefCounted<ArrayBufferView> {
     virtual bool isIntArray() const { return false; }
     virtual bool isUnsignedIntArray() const { return false; }
     virtual bool isFloatArray() const { return false; }
+    virtual bool isDoubleArray() const { return false; } 
     virtual bool isDataView() const { return false; }
 
     PassRefPtr<ArrayBuffer> buffer() const
diff --git a/Source/WebCore/html/canvas/Float64Array.cpp b/Source/WebCore/html/canvas/Float64Array.cpp
new file mode 100644
index 0000000..2dcb373
--- /dev/null
+++ b/Source/WebCore/html/canvas/Float64Array.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2011 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "Float64Array.h"
+
+namespace WebCore {
+
+PassRefPtr<Float64Array> Float64Array::create(unsigned length)
+{
+    return TypedArrayBase<double>::create<Float64Array>(length);
+}
+
+PassRefPtr<Float64Array> Float64Array::create(const double* array, unsigned length)
+{
+    return TypedArrayBase<double>::create<Float64Array>(array, length);
+}
+
+PassRefPtr<Float64Array> Float64Array::create(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
+{
+    return TypedArrayBase<double>::create<Float64Array>(buffer, byteOffset, length);
+}
+
+Float64Array::Float64Array(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
+    : TypedArrayBase<double>(buffer, byteOffset, length)
+{
+}
+
+PassRefPtr<Float64Array> Float64Array::subarray(int start) const
+{
+    return subarray(start, length());
+}
+
+PassRefPtr<Float64Array> Float64Array::subarray(int start, int end) const
+{
+    return subarrayImpl<Float64Array>(start, end);
+}
+
+}
diff --git a/Source/WebCore/html/canvas/Float64Array.h b/Source/WebCore/html/canvas/Float64Array.h
new file mode 100644
index 0000000..f45a21c
--- /dev/null
+++ b/Source/WebCore/html/canvas/Float64Array.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2011 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef Float64Array_h
+#define Float64Array_h
+
+#include "TypedArrayBase.h"
+#include <wtf/MathExtras.h>
+
+namespace WebCore {
+
+class Float64Array : public TypedArrayBase<double> {
+public:
+    static PassRefPtr<Float64Array> create(unsigned length);
+    static PassRefPtr<Float64Array> create(const double* array, unsigned length);
+    static PassRefPtr<Float64Array> create(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned length);
+
+    using TypedArrayBase<double>::set;
+
+    void set(unsigned index, double value)
+    {
+        if (index >= TypedArrayBase<double>::m_length)
+            return;
+        TypedArrayBase<double>::data()[index] = static_cast<double>(value);
+    }
+
+    // Invoked by the indexed getter. Does not perform range checks; caller
+    // is responsible for doing so and returning undefined as necessary.
+    double item(unsigned index) const
+    {
+        ASSERT(index < TypedArrayBase<double>::m_length);
+        double result = TypedArrayBase<double>::data()[index];
+        return result;
+    }
+
+    PassRefPtr<Float64Array> subarray(int start) const;
+    PassRefPtr<Float64Array> subarray(int start, int end) const;
+
+private:
+    Float64Array(PassRefPtr<ArrayBuffer>,
+                 unsigned byteOffset,
+                 unsigned length);
+    // Make constructor visible to superclass.
+    friend class TypedArrayBase<double>;
+
+    // Overridden from ArrayBufferView.
+    virtual bool isDoubleArray() const { return true; }
+};
+
+} // namespace WebCore
+
+#endif // Float64Array_h
diff --git a/Source/WebCore/html/canvas/Float64Array.idl b/Source/WebCore/html/canvas/Float64Array.idl
new file mode 100644
index 0000000..6057253
--- /dev/null
+++ b/Source/WebCore/html/canvas/Float64Array.idl
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2011 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+module html {
+    interface [
+        CanBeConstructed,
+        CustomConstructFunction,
+        V8CustomConstructor,
+        HasNumericIndexGetter,
+        HasCustomIndexSetter,
+        GenerateNativeConverter,
+        NoStaticTables,
+        CustomToJS,
+        DontCheckEnums
+    ] Float64Array : ArrayBufferView {
+        const unsigned int BYTES_PER_ELEMENT = 8;
+
+        readonly attribute unsigned long length;
+        Float64Array subarray(in long start, in [Optional] long end);
+
+        // void set(in Float64Array array, [Optional] in unsigned long offset);
+        // void set(in sequence<long> array, [Optional] in unsigned long offset);
+        [Custom] void set();
+    };
+}
diff --git a/Source/WebCore/page/DOMWindow.idl b/Source/WebCore/page/DOMWindow.idl
index 9f7313c..d5d3413 100644
--- a/Source/WebCore/page/DOMWindow.idl
+++ b/Source/WebCore/page/DOMWindow.idl
@@ -510,6 +510,7 @@ module window {
         attribute [JSCCustomGetter] Int32ArrayConstructor Int32Array; // Usable with new operator
         attribute [JSCCustomGetter] Uint32ArrayConstructor Uint32Array; // Usable with new operator
         attribute [JSCCustomGetter] Float32ArrayConstructor Float32Array; // Usable with new operator
+        attribute [JSCCustomGetter] Float64ArrayConstructor Float64Array; // Usable with new operator 
         attribute [JSCCustomGetter] DataViewConstructor DataView; // Usable with new operator
 
         attribute [JSCCustomGetter,Conditional=WEB_AUDIO,EnabledAtRuntime] AudioContextConstructor webkitAudioContext; // Usable with new operator
diff --git a/Source/WebCore/workers/WorkerContext.idl b/Source/WebCore/workers/WorkerContext.idl
index e31f5ad..5a6c407 100644
--- a/Source/WebCore/workers/WorkerContext.idl
+++ b/Source/WebCore/workers/WorkerContext.idl
@@ -126,6 +126,7 @@ module threads {
         attribute Int32ArrayConstructor Int32Array; // Usable with new operator
         attribute Uint32ArrayConstructor Uint32Array; // Usable with new operator
         attribute Float32ArrayConstructor Float32Array; // Usable with new operator
+        attribute Float64ArrayConstructor Float64Array; // Usable with new operator 
     };
 
 }