Revert 177827 "WebGL: Free temporary GPU resources held by inact..."

trunk/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 606 matching lines @@
             EXPECT_NE(trackingContext->stencilAttachment(), trackingContext->depthAttachment());
         } else {
             EXPECT_EQ(0u, trackingContext->stencilAttachment());
             EXPECT_EQ(0u, trackingContext->depthAttachment());
         }
 
         drawingBuffer->beginDestruction();
     }
 }
 
-TEST_F(DrawingBufferTest, verifySetIsHiddenProperlyAffectsMailboxes)
-{
-    blink::WebExternalTextureMailbox mailbox;
-
-    // Produce mailboxes.
-    m_drawingBuffer->markContentsChanged();
-    EXPECT_TRUE(m_drawingBuffer->prepareMailbox(&mailbox, 0));
-
-    unsigned waitSyncPoint = webContext()->insertSyncPoint();
-    mailbox.syncPoint = waitSyncPoint;
-    m_drawingBuffer->setIsHidden(true);
-    m_drawingBuffer->mailboxReleased(mailbox);
-    // m_drawingBuffer deletes mailbox immediately when hidden.
-    EXPECT_EQ(waitSyncPoint, webContext()->mostRecentlyWaitedSyncPoint());
-
-    m_drawingBuffer->beginDestruction();
-}
-
 } // namespace