CL for perf tryjob on mac

third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp

 /*
  * Copyright (C) 2012 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 832 matching lines @@
                 if (lostResource) {
                     texture->abandon();
                 } else {
                     texture->textureParamsModified();
                 }
             }
         }
 
 #if USE_IOSURFACE_FOR_2D_CANVAS
         if (!releasedMailboxInfo->m_imageInfo.empty() && !lostResource) {
-            m_imageInfoCache.append(releasedMailboxInfo->m_imageInfo);
+            // IOSurface texures can't be reused, because the compositor returns
+            // them while they are still in use, and the SyncToken isn't
+            // relevant. https://crbug.com/608026.
+            deleteCHROMIUMImage(releasedMailboxInfo->m_imageInfo);
         }
 #endif // USE_IOSURFACE_FOR_2D_CANVAS
     }
 
     RefPtr<Canvas2DLayerBridge> selfRef;
     if (m_destructionInProgress) {
         // To avoid memory use after free, take a scoped self-reference
         // to postpone destruction until the end of this function.
         selfRef = this;
     }
@@ skipping 119 matching lines @@
 #endif // USE_IOSURFACE_FOR_2D_CANVAS
 }
 
 void Canvas2DLayerBridge::Logger::reportHibernationEvent(HibernationEvent event)
 {
     DEFINE_STATIC_LOCAL(EnumerationHistogram, hibernationHistogram, ("Canvas.HibernationEvents", HibernationEventCount));
     hibernationHistogram.count(event);
 }
 
 } // namespace blink