Removing getBackingTextureImage from ImageBufferSurface

Source/platform/graphics/Canvas2DLayerBridge.cpp

Index: Source/platform/graphics/Canvas2DLayerBridge.cpp
diff --git a/Source/platform/graphics/Canvas2DLayerBridge.cpp b/Source/platform/graphics/Canvas2DLayerBridge.cpp
index 1b2abc1ea9a423408b573c85161671c7816b1119..f5317dab82a32a119a495a017a2d9e726e42187f 100644
--- a/Source/platform/graphics/Canvas2DLayerBridge.cpp
+++ b/Source/platform/graphics/Canvas2DLayerBridge.cpp
@@ -513,18 +513,10 @@ void Canvas2DLayerBridge::finalizeFrame(const FloatRect &dirtyRect)
     m_didRecordDrawCommand = true;
 }
 
-PassRefPtr<SkImage> Canvas2DLayerBridge::getBackingTextureImage()
+PassRefPtr<SkImage> Canvas2DLayerBridge::newImageSnapshot()
 {
     if (!checkSurfaceValid())
         return nullptr;
-
-    context()->flush();
-
-    return adoptRef(m_canvas->newImageSnapshot());
-}
-
-PassRefPtr<SkImage> Canvas2DLayerBridge::newImageSnapshot()
-{
     return adoptRef(m_canvas->newImageSnapshot());
 }