Add subscribeUniform extension pipeline

gpu/command_buffer/service/program_manager.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 21 matching lines @@
 class GPU_EXPORT Program : public base::RefCounted<Program> {
  public:
   static const int kMaxAttachedShaders = 2;
 
   enum VaryingsPackingOption {
     kCountOnlyStaticallyUsed,
     kCountAll
   };
 
   enum UniformApiType {
+    kUniformNone = 0,
     kUniform1i = 1 << 0,
     kUniform2i = 1 << 1,
     kUniform3i = 1 << 2,
     kUniform4i = 1 << 3,
     kUniform1f = 1 << 4,
     kUniform2f = 1 << 5,
     kUniform3f = 1 << 6,
     kUniform4f = 1 << 7,
     kUniformMatrix2f = 1 << 8,
     kUniformMatrix3f = 1 << 9,
@@ skipping 386 matching lines @@
 
   uint32 max_varying_vectors_;
 
   DISALLOW_COPY_AND_ASSIGN(ProgramManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_PROGRAM_MANAGER_H_