Merge changes I55c6d71a,Ifb3277d4,Ia1b847a2,I7ba9cf3f,Ida2b2a8a,I1280ec90,I72f818d5,I2e3b588b,I9a4e6289,Ia724c78b,Icd8612c8,Ie31b15d7,Ie125edae,I77941a88,I89dae78b,I3516e5ca,I1a4c17b5,I2c4ecc1a,I9c8e6537,Ifac13115,Ie1f80e09,Ia541ed77,I60ce9d78

* changes:
  Merge WebKit at r82507: Update ThirdPartyProject.prop
  Merge WebKit at r82507: Cherry-pick change r88166 to add INSPECTOR guards to ScriptProfiler
  Merge WebKit at r82507: Work around a V8 bug
  Merge WebKit at r82507: JNIType renamed to JavaType
  Merge WebKit at r82507: IconDatabaseClient interface expanded
  Merge WebKit at r82507: Don't use new loss-free code path in HTMLCanvasElement::toDataURL()
  Merge WebKit at r82507: IcondDatabaseBase::iconForPageURL() renamed
  Merge WebKit at r82507: IconDatabaseBase::Open() signature changed
  Merge WebKit at r82507: Node::isContentEditable() renamed
  Merge WebKit at r82507: Use icon database through IconDatabaseBase
  Merge WebKit at r82507: toInputElement() is now a member of Node
  Merge WebKit at r82507: FrameLoaderClient::objectContentType() signature changed
  Merge WebKit at r82507: StringImpl::computeHash() removed
  Merge WebKit at r82507: Stub out FontPlatformData::setOrientation()
  Merge WebKit at r82507: Path::strokeBoundingRect() is now const
  Merge WebKit at r82507: Add missing UnusedParam.h include in ApplicationCacheGroup.cpp
  Merge WebKit at r82507: Continue to use Android's version of FontPlatformData.h
  Merge WebKit at r82507: Update signature of FontCustomPlatformData::fontPlatformData()
  Merge WebKit at r82507: Fix conflicts due to JNI refactoring
  Merge WebKit at r82507: Fix conflicts due to new StorageTracker
  Merge WebKit at r82507: Fix conflicts
  Merge WebKit at r82507: Fix makefiles
  Merge WebKit at r82507: Initial merge by git

1 files changed, 14 insertions, 0 deletions

diff --git a/Source/WebCore/html/canvas/WebGLRenderingContext.h b/Source/WebCore/html/canvas/WebGLRenderingContext.h
index 13145c8..f716efb 100644
--- a/Source/WebCore/html/canvas/WebGLRenderingContext.h
+++ b/Source/WebCore/html/canvas/WebGLRenderingContext.h
@@ -285,7 +285,9 @@ public:
 
     void reshape(int width, int height);
 
+    void markLayerComposited();
     virtual void paintRenderingResultsToCanvas();
+    virtual PassRefPtr<ImageData> paintRenderingResultsToImageData();
 
     void removeObject(WebGLObject*);
     
@@ -443,6 +445,13 @@ public:
     bool m_contextLost;
     GraphicsContext3D::Attributes m_attributes;
 
+    bool m_layerCleared;
+    GC3Dfloat m_clearColor[4];
+    bool m_scissorEnabled;
+    GC3Dfloat m_clearDepth;
+    GC3Dint m_clearStencil;
+    GC3Dboolean m_colorMask[4];
+
     long m_stencilBits;
     GC3Duint m_stencilMask, m_stencilMaskBack;
     GC3Dint m_stencilFuncRef, m_stencilFuncRefBack; // Note that these are the user specified values, not the internal clamped value.
@@ -469,6 +478,11 @@ public:
     WebGLGetInfo getWebGLFloatArrayParameter(GC3Denum);
     WebGLGetInfo getWebGLIntArrayParameter(GC3Denum);
 
+    // Clear the backbuffer if it was composited since the last operation.
+    // clearMask is set to the bitfield of any clear that would happen anyway at this time
+    // and the function returns true if that clear is now unnecessary.
+    bool clearIfComposited(GC3Dbitfield clearMask = 0);
+
     void texImage2DBase(GC3Denum target, GC3Dint level, GC3Denum internalformat,
                         GC3Dsizei width, GC3Dsizei height, GC3Dint border,
                         GC3Denum format, GC3Denum type, void* pixels, ExceptionCode&);