Implement GetIntegerv(SAMPLER_BINDING/TRANSFORM_FEEDBACK_BINDING) in command buffer.

gpu/command_buffer/service/sampler_manager.h

 // Copyright (c) 2015 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_SAMPLER_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_SAMPLER_MANAGER_H_
 
 #include <vector>
 
 #include "base/containers/hash_tables.h"
@@ skipping 19 matching lines @@
   GLenum wrap_s;
   GLenum wrap_t;
   GLenum compare_func;
   GLenum compare_mode;
   GLfloat max_lod;
   GLfloat min_lod;
 };
 
 class GPU_EXPORT Sampler : public base::RefCounted<Sampler> {
  public:
-  Sampler(SamplerManager* manager, GLuint service_id);
+  Sampler(SamplerManager* manager, GLuint client_id, GLuint service_id);
 
-  // The service side OpenGL id of the texture.
+  GLuint client_id() const {
+    return client_id_;
+  }
+
   GLuint service_id() const {
     return service_id_;
   }
 
   const SamplerState& sampler_state() const {
     return sampler_state_;
   }
 
   // Sampler parameters
   GLenum min_filter() const {
@@ skipping 54 matching lines @@
   // Sets a sampler parameter.
   // Returns GL_NO_ERROR on success. Otherwise the error to generate.
   GLenum SetParameteri(
       const FeatureInfo* feature_info, GLenum pname, GLint param);
   GLenum SetParameterf(
       const FeatureInfo* feature_info, GLenum pname, GLfloat param);
 
   // The manager that owns this Sampler.
   SamplerManager* manager_;
 
-    // The id of the texure
+  GLuint client_id_;
   GLuint service_id_;
 
   // Sampler parameters.
   SamplerState sampler_state_;
 
   // True if deleted.
   bool deleted_;
 };
 
 // This class keeps track of the samplers and their state.
@@ skipping 34 matching lines @@
 
   bool have_context_;
 
   DISALLOW_COPY_AND_ASSIGN(SamplerManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_SAMPLER_MANAGER_H_