command_buffer: Defer restoring of FBO bindings when changing virtual contexts

gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h

Index: gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
diff --git a/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h b/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
index 95b25a0585f2e11411497cb9fcfc660ba034d0be..d7d17ea293fb839c0a8cfe06439bea4b8e75f863 100644
--- a/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
+++ b/gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.h
@@ -33,7 +33,7 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
                   const gles2::FeatureInfo::FeatureFlags& feature_flags);
   void Destroy();
 
-  void DoCopyTexture(const gles2::GLES2Decoder* decoder,
+  void DoCopyTexture(gles2::GLES2Decoder* decoder,
                      GLenum source_target,
                      GLuint source_id,
                      GLenum source_internal_format,
@@ -46,7 +46,7 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
                      bool premultiply_alpha,
                      bool unpremultiply_alpha);
 
-  void DoCopySubTexture(const gles2::GLES2Decoder* decoder,
+  void DoCopySubTexture(gles2::GLES2Decoder* decoder,
                         GLenum source_target,
                         GLuint source_id,
                         GLenum source_internal_format,
@@ -67,7 +67,7 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
                         bool premultiply_alpha,
                         bool unpremultiply_alpha);
 
-  void DoCopySubTextureWithTransform(const gles2::GLES2Decoder* decoder,
+  void DoCopySubTextureWithTransform(gles2::GLES2Decoder* decoder,
                                      GLenum source_target,
                                      GLuint source_id,
                                      GLenum source_internal_format,
@@ -93,7 +93,7 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
   // the source texture and copying to the destination texture. The transform
   // matrix should be given in column-major form, so it can be passed
   // directly to GL.
-  void DoCopyTextureWithTransform(const gles2::GLES2Decoder* decoder,
+  void DoCopyTextureWithTransform(gles2::GLES2Decoder* decoder,
                                   GLenum source_target,
                                   GLuint source_id,
                                   GLenum dest_target,
@@ -135,7 +135,7 @@ class GPU_EXPORT CopyTextureCHROMIUMResourceManager {
     GLuint sampler_handle;
   };
 
-  void DoCopyTextureInternal(const gles2::GLES2Decoder* decoder,
+  void DoCopyTextureInternal(gles2::GLES2Decoder* decoder,
                              GLenum source_target,
                              GLuint source_id,
                              GLenum dest_target,