Add GL State Restoring Functions

gpu/command_buffer/service/context_state.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.
 
 // This file contains the ContextState class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_H_
 #define GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_H_
 
 #include <vector>
@@ skipping 81 matching lines @@
 struct GPU_EXPORT ContextState {
   explicit ContextState(FeatureInfo* feature_info);
   ~ContextState();
 
   void Initialize();
 
   void RestoreState() const;
   void InitCapabilities() const;
   void InitState() const;
 
+  void RestoreActiveTexture() const;
+  void RestoreAttribute(GLuint index) const;
+  void RestoreBufferBindings() const;
+  void RestoreGlobalState() const;
+  void RestoreProgramBindings() const;
+  void RestoreRenderbufferBindings() const;
+  void RestoreTextureUnitBindings(GLuint unit) const;
+
   // Helper for getting cached state.
   bool GetStateAsGLint(
       GLenum pname, GLint* params, GLsizei* num_written) const;
   bool GetStateAsGLfloat(
       GLenum pname, GLfloat* params, GLsizei* num_written) const;
   bool GetEnabled(GLenum cap) const;
 
   #include "gpu/command_buffer/service/context_state_autogen.h"
 
   EnableFlags enable_flags;
@@ skipping 40 matching lines @@
   bool pack_reverse_row_order;
 
   FeatureInfo* feature_info_;
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_H_