Cleanup some dead code in blink::ImageBuffer and friends

third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTest.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * 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
@@ skipping 198 matching lines @@
 
     WebGraphicsContext3DForTests* webContext()
     {
         return m_context;
     }
 
     WebGraphicsContext3DForTests* m_context;
     RefPtr<DrawingBufferForTests> m_drawingBuffer;
 };
 
-TEST_F(DrawingBufferTest, testPaintRenderingResultsToCanvas)
-{
-    OwnPtr<ImageBufferSurface> imageBufferSurface = adoptPtr(new UnacceleratedImageBufferSurface(IntSize(initialWidth, initialHeight)));
-    EXPECT_FALSE(!imageBufferSurface);
-    EXPECT_TRUE(imageBufferSurface->isValid());
-    OwnPtr<ImageBuffer> imageBuffer = ImageBuffer::create(imageBufferSurface.release());
-    EXPECT_FALSE(!imageBuffer);
-    EXPECT_FALSE(imageBuffer->isAccelerated());
-    EXPECT_FALSE(!imageBuffer->newImageSnapshot());
-    m_drawingBuffer->paintRenderingResultsToCanvas(imageBuffer.get());
-    EXPECT_FALSE(imageBuffer->isAccelerated());
-    EXPECT_FALSE(!imageBuffer->newImageSnapshot());
-    m_drawingBuffer->beginDestruction();
-}
-
 TEST_F(DrawingBufferTest, verifyResizingProperlyAffectsMailboxes)
 {
     WebExternalTextureMailbox mailbox;
 
     IntSize initialSize(initialWidth, initialHeight);
     IntSize alternateSize(initialWidth, alternateHeight);
 
     // Produce one mailbox at size 100x100.
     m_drawingBuffer->markContentsChanged();
     EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
@@ skipping 423 matching lines @@
     // m_drawingBuffer deletes mailbox immediately when hidden.
 
     WGC3Duint waitSyncToken = 0;
     memcpy(&waitSyncToken, mailbox.syncToken, sizeof(waitSyncToken));
     EXPECT_EQ(waitSyncToken, webContext()->mostRecentlyWaitedSyncToken());
 
     m_drawingBuffer->beginDestruction();
 }
 
 } // namespace blink