GPU: Only restore one texture unit in ScopedTextureBinder.

gpu/command_buffer/service/gles2_cmd_decoder.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 GLES2Decoder class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 
 #include <vector>
@@ skipping 123 matching lines @@
 
   virtual Capabilities GetCapabilities() = 0;
 
   // Restores all of the decoder GL state.
   virtual void RestoreState(const ContextState* prev_state) const = 0;
 
   // Restore States.
   virtual void RestoreActiveTexture() const = 0;
   virtual void RestoreAllTextureUnitBindings(
       const ContextState* prev_state) const = 0;
+  virtual void RestoreActiveTextureUnitBinding(unsigned int target) const = 0;
   virtual void RestoreAttribute(unsigned index) const = 0;
   virtual void RestoreBufferBindings() const = 0;
   virtual void RestoreFramebufferBindings() const = 0;
   virtual void RestoreGlobalState() const = 0;
   virtual void RestoreProgramBindings() const = 0;
   virtual void RestoreTextureState(unsigned service_id) const = 0;
   virtual void RestoreTextureUnitBindings(unsigned unit) const = 0;
 
   virtual void ClearAllAttributes() const = 0;
   virtual void RestoreAllAttributes() const = 0;
@@ skipping 86 matching lines @@
   bool debug_;
   bool log_commands_;
 
   DISALLOW_COPY_AND_ASSIGN(GLES2Decoder);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_