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diff --git a/WebCore/platform/android/ScrollViewAndroid.cpp b/WebCore/platform/android/ScrollViewAndroid.cpp
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+++ b/WebCore/platform/android/ScrollViewAndroid.cpp
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+/*
+ * Copyright 2007, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * 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 THE COPYRIGHT HOLDERS ``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.
+ */
+#define LOG_TAG "WebCore"
+
+#include "config.h"
+#include "ScrollView.h"
+
+#include "FloatRect.h"
+#include "FrameView.h"
+#include "IntRect.h"
+#include "WebCoreFrameBridge.h"
+#include "WebCoreViewBridge.h"
+#include "WebViewCore.h"
+
+/*
+    This class implementation does NOT actually emulate the Qt ScrollView.
+    It does provide an implementation that khtml will use to interact with
+    WebKit's WebFrameView documentView and our NSScrollView subclass.
+
+    ScrollView's view is a NSScrollView (or subclass of NSScrollView)
+    in most cases. That scrollview is a subview of an
+    WebCoreFrameView. The WebCoreFrameView's documentView will also be
+    the scroll view's documentView.
+    
+    The WebCoreFrameView's size is the frame size.  The WebCoreFrameView's documentView
+    corresponds to the frame content size.  The scrollview itself is autosized to the
+    WebCoreFrameView's size (see Widget::resize).
+*/
+
+namespace WebCore {
+
+IntRect ScrollView::platformVisibleContentRect(bool includeScrollbars) const
+{
+    IntRect rect = platformWidget()->getBounds();
+    // This makes subframes draw correctly, since subframes cannot scroll.
+    if (parent())
+        return IntRect(0, 0, rect.width(), rect.height());
+    return rect;
+}
+
+IntSize ScrollView::platformContentsSize() const
+{
+    return m_contentsSize;
+}
+
+void ScrollView::platformSetScrollPosition(const WebCore::IntPoint& pt)
+{
+    if (parent()) // don't attempt to scroll subframes; they're fully visible
+        return;
+    android::WebViewCore::getWebViewCore(this)->scrollTo(pt.x(), pt.y());
+}
+
+void ScrollView::platformScrollbarModes(ScrollbarMode& h, ScrollbarMode& v) const
+{
+    h = v = ScrollbarAlwaysOff;
+}
+
+bool ScrollView::platformProhibitsScrolling()
+{
+    if (!isFrameView())
+        return false;
+    FrameView* view = static_cast<FrameView*>(this);
+    // We want to ignore requests to scroll that were not initiated by the user.  An
+    // example of this is when text is inserted into a textfield/area, which results in
+    // a scroll.  We ignore this because we now how to do this ourselves in the UI thread.
+    // An example of it being initiated by the user is if the user clicks an anchor
+    // element which simply scrolls the page.
+    return !android::WebFrame::getWebFrame(view->frame())->userInitiatedClick();
+}
+
+void ScrollView::platformRepaintContentRectangle(const IntRect &rect, bool now)
+{
+    android::WebViewCore::getWebViewCore(this)->contentInvalidate(rect);
+}
+
+#ifdef ANDROID_CAPTURE_OFFSCREEN_PAINTS
+void ScrollView::platformOffscreenContentRectangle(const IntRect& rect)
+{
+    android::WebViewCore::getWebViewCore(this)->offInvalidate(rect);
+}
+#endif
+
+}