Revert "Replaced blink sync points with new sync tokens."

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;
     WebGraphicsContext3D* sharedContext = provider->context3d();
     if (!sharedContext)
         return false;
 
     OwnPtr<WebExternalTextureMailbox> mailbox = adoptPtr(new WebExternalTextureMailbox);
 
     // Contexts may be in a different share group. We must transfer the texture through a mailbox first
     sharedContext->genMailboxCHROMIUM(mailbox->name);
     sharedContext->produceTextureDirectCHROMIUM(textureId, GL_TEXTURE_2D, mailbox->name);
-    const WGC3Duint64 sharedFenceSync = sharedContext->insertFenceSyncCHROMIUM();
     sharedContext->flush();
 
-    mailbox->validSyncToken = sharedContext->genSyncTokenCHROMIUM(sharedFenceSync, mailbox->syncToken);
+    mailbox->validSyncToken = sharedContext->insertSyncPoint(mailbox->syncToken);
     if (mailbox->validSyncToken)
-        context->waitSyncTokenCHROMIUM(mailbox->syncToken);
+        context->waitSyncToken(mailbox->syncToken);
 
     Platform3DObject sourceTexture = context->createAndConsumeTextureCHROMIUM(GL_TEXTURE_2D, mailbox->name);
 
     // The canvas is stored in a premultiplied format, so unpremultiply if necessary.
     // The canvas is stored in an inverted position, so the flip semantics are reversed.
     context->copyTextureCHROMIUM(GL_TEXTURE_2D, sourceTexture, texture, internalFormat, destType, flipY ? GL_FALSE : GL_TRUE, GL_FALSE, premultiplyAlpha ? GL_FALSE : GL_TRUE);
 
     context->deleteTexture(sourceTexture);
 
-    const WGC3Duint64 contextFenceSync = context->insertFenceSyncCHROMIUM();
-
     context->flush();
 
     WGC3Dbyte syncToken[24];
-    if (context->genSyncTokenCHROMIUM(contextFenceSync, syncToken))
-        sharedContext->waitSyncTokenCHROMIUM(syncToken);
+    if (context->insertSyncPoint(syncToken))
+        sharedContext->waitSyncToken(syncToken);
 
     // Undo grContext texture binding changes introduced in this function
     provider->grContext()->resetContext(kTextureBinding_GrGLBackendState);
 
     return true;
 }
 
 bool ImageBuffer::copyRenderingResultsFromDrawingBuffer(DrawingBuffer* drawingBuffer, SourceDrawingBuffer sourceBuffer)
 {
     if (!drawingBuffer || !m_surface->isAccelerated())
@@ skipping 134 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