Modify Copy{Sub}TextureCHROMIUM entry point to add level argument

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 251 matching lines @@
   gl->WaitSyncTokenCHROMIUM(produceSyncToken.GetConstData());
 
   GLuint sourceTexture =
       gl->CreateAndConsumeTextureCHROMIUM(textureInfo->fTarget, mailbox.name);
 
   // The canvas is stored in a premultiplied format, so unpremultiply if
   // necessary. The canvas is also stored in an inverted position, so the flip
   // semantics are reversed.
   // It is expected that callers of this method have already allocated
   // the platform texture with the appropriate size.
-  gl->CopySubTextureCHROMIUM(sourceTexture, texture, destPoint.x(),
+  gl->CopySubTextureCHROMIUM(sourceTexture, 0, texture, 0, destPoint.x(),
                              destPoint.y(), sourceSubRectangle.x(),
                              sourceSubRectangle.y(), sourceSubRectangle.width(),
                              sourceSubRectangle.height(),
                              flipY ? GL_FALSE : GL_TRUE, GL_FALSE,
                              premultiplyAlpha ? GL_FALSE : GL_TRUE);
 
   gl->DeleteTextures(1, &sourceTexture);
 
   const GLuint64 contextFenceSync = gl->InsertFenceSyncCHROMIUM();
 
@@ skipping 284 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