gpu: Avoid detaching images with glTexSubImage2D

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 20 matching lines @@
 struct Mailbox;
 
 namespace gles2 {
 
 class ContextGroup;
 class ErrorState;
 class GLES2Util;
 class ImageManager;
 class Logger;
 class QueryManager;
+class Texture;
 class VertexArrayManager;
 class ValuebufferManager;
 struct ContextState;
 
 struct DisallowedFeatures {
   DisallowedFeatures()
       : gpu_memory_manager(false) {
   }
 
   bool gpu_memory_manager;
@@ skipping 154 matching lines @@
   // If no such record is found then return false.
   virtual bool GetServiceTextureId(uint32 client_texture_id,
                                    uint32* service_texture_id);
 
   // Provides detail about a lost context if one occurred.
   virtual error::ContextLostReason GetContextLostReason() = 0;
 
   // Clears a level of a texture
   // Returns false if a GL error should be generated.
   virtual bool ClearLevel(
-      unsigned service_id,
-      unsigned bind_target,
+      Texture* texture,
       unsigned target,
       int level,
       unsigned internal_format,
       unsigned format,
       unsigned type,
       int width,
       int height,
       bool is_texture_immutable) = 0;
 
   virtual ErrorState* GetErrorState() = 0;
@@ skipping 38 matching lines @@
   bool log_commands_;
   bool unsafe_es3_apis_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(GLES2Decoder);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_