Making use of bindless variants mailbox produce/consume.

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 152 matching lines @@
     if (!provider)
         return false;
     blink::WebGraphicsContext3D* sharedContext = provider->context3d();
     if (!sharedContext || !sharedContext->makeContextCurrent())
         return false;
 
     OwnPtr<blink::WebExternalTextureMailbox> mailbox = adoptPtr(new blink::WebExternalTextureMailbox);
 
     // Contexts may be in a different share group. We must transfer the texture through a mailbox first
     sharedContext->genMailboxCHROMIUM(mailbox->name);
-    sharedContext->bindTexture(GL_TEXTURE_2D, getBackingTexture());
-    sharedContext->produceTextureCHROMIUM(GL_TEXTURE_2D, mailbox->name);
+    sharedContext->produceTextureDirectCHROMIUM(getBackingTexture(), GL_TEXTURE_2D, mailbox->name);
     sharedContext->flush();
 
     mailbox->syncPoint = sharedContext->insertSyncPoint();
 
     if (!context->makeContextCurrent())
         return false;
 
-    Platform3DObject sourceTexture = context->createTexture();
-
-    context->bindTexture(GL_TEXTURE_2D, sourceTexture);
-
     context->waitSyncPoint(mailbox->syncPoint);
-    context->consumeTextureCHROMIUM(GL_TEXTURE_2D, mailbox->name);
+    Platform3DObject sourceTexture = context->createAndConsumeTextureCHROMIUM(GL_TEXTURE_2D, mailbox->name);
 
     // The canvas is stored in a premultiplied format, so unpremultiply if necessary.
     context->pixelStorei(GC3D_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM, !premultiplyAlpha);
 
     // The canvas is stored in an inverted position, so the flip semantics are reversed.
     context->pixelStorei(GC3D_UNPACK_FLIP_Y_CHROMIUM, !flipY);
     context->copyTextureCHROMIUM(GL_TEXTURE_2D, sourceTexture, texture, level, internalFormat, destType);
 
     context->pixelStorei(GC3D_UNPACK_FLIP_Y_CHROMIUM, false);
     context->pixelStorei(GC3D_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM, false);
 
-    context->bindTexture(GL_TEXTURE_2D, 0);
     context->deleteTexture(sourceTexture);
 
     context->flush();
     sharedContext->waitSyncPoint(context->insertSyncPoint());
 
     // Undo grContext texture binding changes introduced in this function
     provider->grContext()->resetContext(kTextureBinding_GrGLBackendState);
 
     return true;
 }
@@ skipping 216 matching lines @@
     if (!encodeImage(imageData, mimeType, quality, &encodedImage))
         return "data:,";
 
     Vector<char> base64Data;
     base64Encode(encodedImage, base64Data);
 
     return "data:" + mimeType + ";base64," + base64Data;
 }
 
 } // namespace WebCore