Reduce internal Flush() in GL resource glGen/Delete APIs.

gpu/command_buffer/build_gles2_cmd_buffer.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """code generator for GLES2 command buffers."""
 
 import itertools
 import os
 import os.path
@@ skipping 3933 matching lines @@
         args)
     func.WriteDestinationInitalizationValidation(file)
     self.WriteClientGLCallLog(func, file)
     for arg in func.GetOriginalArgs():
       arg.WriteClientSideValidationCode(file, func)
     code = """  GPU_CLIENT_SINGLE_THREAD_CHECK();
   GetIdHandler(id_namespaces::k%(resource_types)s)->
       MakeIds(this, 0, %(args)s);
   %(name)sHelper(%(args)s);
   helper_->%(name)sImmediate(%(args)s);
-  helper_->CommandBufferHelper::Flush();
+  if (share_group_->bind_generates_resource())
+    helper_->CommandBufferHelper::Flush();
 %(log_code)s
   CheckGLError();
 }
 
 """
     file.Write(code % args)
 
   def WriteGLES2ImplementationUnitTest(self, func, file):
     """Overrriden from TypeHandler."""
     code = """
@@ skipping 3922 matching lines @@
       "../../mojo/public/gles2/gles2_call_visitor_autogen.h")
 
   if gen.errors > 0:
     print "%d errors" % gen.errors
     return 1
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))