gpu: support GL_TEXTURE_CUBE_MAP destination target to Copy(Sub)TextureCHROMIUM.

gpu/command_buffer/service/texture_manager.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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_TEXTURE_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_TEXTURE_MANAGER_H_
 
 #include <algorithm>
 #include <list>
 #include <set>
@@ skipping 165 matching lines @@
   }
 
   void SetImmutable(bool immutable) {
     immutable_ = immutable;
   }
 
   bool IsImmutable() const {
     return immutable_;
   }
 
+  // In GLES2 "cube complete" means all 6 faces level 0 are defined, all the
+  // same format, all the same dimensions and all width = height.
+  bool cube_complete() const { return cube_complete_; }
+
   // Get the cleared rectangle for a particular level. Returns an empty
   // rectangle if level does not exist.
   gfx::Rect GetLevelClearedRect(GLenum target, GLint level) const;
 
   // Whether a particular level/face is cleared.
   bool IsLevelCleared(GLenum target, GLint level) const;
 
   // Whether the texture has been defined
   bool IsDefined() const {
     return estimated_size() > 0;
@@ skipping 71 matching lines @@
                     GLenum type,
                     const gfx::Rect& cleared_rect);
 
   // In GLES2 "texture complete" means it has all required mips for filtering
   // down to a 1x1 pixel texture, they are in the correct order, they are all
   // the same format.
   bool texture_complete() const {
     return texture_complete_;
   }
 
-  // In GLES2 "cube complete" means all 6 faces level 0 are defined, all the
-  // same format, all the same dimensions and all width = height.
-  bool cube_complete() const {
-    return cube_complete_;
-  }
-
   // Whether or not this texture is a non-power-of-two texture.
   bool npot() const {
     return npot_;
   }
 
   // Marks a |rect| of a particular level as cleared.
   void SetLevelClearedRect(GLenum target,
                            GLint level,
                            const gfx::Rect& cleared_rect);
 
@@ skipping 667 matching lines @@
  private:
   DecoderTextureState* texture_state_;
   base::TimeTicks begin_time_;
   DISALLOW_COPY_AND_ASSIGN(ScopedTextureUploadTimer);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_TEXTURE_MANAGER_H_