Re-enable IOSurface Canvas2D.

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

 /*
  * Copyright (c) 2008, Google Inc. All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. 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
@@ skipping 189 matching lines @@
         return false;
 
     OwnPtr<WebGraphicsContext3DProvider> provider = adoptPtr(Platform::current()->createSharedOffscreenGraphicsContext3DProvider());
     if (!provider)
         return false;
     WebGraphicsContext3D* sharedContext = provider->context3d();
     if (!sharedContext)
         return false;
 
     OwnPtr<WebExternalTextureMailbox> mailbox = adoptPtr(new WebExternalTextureMailbox);
+    mailbox->textureSize = WebSize(textureImage->width(), textureImage->height());
 
     // Contexts may be in a different share group. We must transfer the texture through a mailbox first
     sharedContext->genMailboxCHROMIUM(mailbox->name);
     sharedContext->produceTextureDirectCHROMIUM(textureInfo->fID, textureInfo->fTarget, mailbox->name);
     const WGC3Duint64 sharedFenceSync = sharedContext->insertFenceSyncCHROMIUM();
     sharedContext->flush();
 
     mailbox->validSyncToken = sharedContext->genSyncTokenCHROMIUM(sharedFenceSync, mailbox->syncToken);
     if (mailbox->validSyncToken)
         context->waitSyncTokenCHROMIUM(mailbox->syncToken);
@@ skipping 185 matching lines @@
     ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType));
 
     Vector<unsigned char> result;
     if (!encodeImage(mimeType, quality, &result))
         return "data:,";
 
     return "data:" + mimeType + ";base64," + base64Encode(result);
 }
 
 } // namespace blink