Add glUniformBlockBinding to GPU command buffer.

gpu/command_buffer/client/program_info_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_CLIENT_PROGRAM_INFO_MANAGER_H_
 #define GPU_COMMAND_BUFFER_CLIENT_PROGRAM_INFO_MANAGER_H_
 
 #include <GLES3/gl3.h>
 
 #include <string>
@@ skipping 42 matching lines @@
       GLES2Implementation* gl, GLuint program, const char* name);
 
   bool GetActiveUniformBlockName(
       GLES2Implementation* gl, GLuint program, GLuint index,
       GLsizei buf_size, GLsizei* length, char* name);
 
   bool GetActiveUniformBlockiv(
       GLES2Implementation* gl, GLuint program, GLuint index,
       GLenum pname, GLint* params);
 
+  // Attempt to update the |index| uniform block binding.
+  // It's no op if the program does not exist, or the |index| uniform block
+  // is not in the cache, or binding >= GL_MAX_UNIFORM_BUFFER_BINDINGS.
+  void UniformBlockBinding(
+      GLES2Implementation* gl, GLuint program, GLuint index, GLuint binding);
+
  private:
   friend class ProgramInfoManagerTest;
 
   FRIEND_TEST_ALL_PREFIXES(ProgramInfoManagerTest, UpdateES3UniformBlocks);
 
   enum ProgramInfoType {
     kES2,
     kES3UniformBlocks,
     kNone,
   };
@@ skipping 46 matching lines @@
     GLint GetUniformLocation(const std::string& name) const;
 
     GLint GetFragDataLocation(const std::string& name) const;
     void CacheFragDataLocation(const std::string& name, GLint loc);
 
     bool GetProgramiv(GLenum pname, GLint* params);
 
     // Gets the index of a uniform block by name.
     GLuint GetUniformBlockIndex(const std::string& name) const;
     const UniformBlock* GetUniformBlock(GLuint index) const;
+    // Update the binding if the |index| uniform block is in the cache.
+    void UniformBlockBinding(GLuint index, GLuint binding);
 
     // Updates the ES2 only program info after a successful link.
     void UpdateES2(const std::vector<int8>& result);
 
     // Updates the ES3 UniformBlock info after a successful link.
     void UpdateES3UniformBlocks(const std::vector<int8>& result);
 
     bool IsCached(ProgramInfoType type) const;
 
    private:
@@ skipping 31 matching lines @@
 
   ProgramInfoMap program_infos_;
 
   mutable base::Lock lock_;
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_PROGRAM_INFO_MANAGER_H_