Mark copied textures as cleared when using GL_CHROMIUM_copy_texture.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 8480 matching lines @@
         0, internal_format, dest_type, NULL);
     GLenum error = PeekGLError();
     if (error != GL_NO_ERROR) {
       RestoreCurrentTexture2DBindings();
       return;
     }
 
     texture_manager()->SetLevelInfo(
         dest_info, GL_TEXTURE_2D, level, internal_format, source_width,
         source_height, 1, 0, internal_format, dest_type, true);
+  } else {
+    texture_manager()->SetLevelCleared(dest_info, GL_TEXTURE_2D, level);
   }
 
   state_dirty_ = true;
   glViewport(0, 0, source_width, source_height);
   copy_texture_CHROMIUM_->DoCopyTexture(target, source_info->service_id(),
                                         dest_info->service_id(), level,
                                         unpack_flip_y_,
                                         unpack_premultiply_alpha_);
   glViewport(viewport_x_, viewport_y_, viewport_width_, viewport_height_);
 
@@ skipping 176 matching lines @@
   BindAndApplyTextureParameters(info);
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu