Add glCompressedCopySubTextureCHROMIUM

gpu/command_buffer/service/gles2_cmd_copy_texture_chromium.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_copy_texture_chromium.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "gpu/command_buffer/service/gl_utils.h"
@@ skipping 453 matching lines @@
     GLsizei dest_height,
     GLsizei source_width,
     GLsizei source_height,
     bool flip_y,
     bool premultiply_alpha,
     bool unpremultiply_alpha,
     const GLfloat transform_matrix[16]) {
   DCHECK(source_target == GL_TEXTURE_2D ||
          source_target == GL_TEXTURE_RECTANGLE_ARB ||
          source_target == GL_TEXTURE_EXTERNAL_OES);
-  DCHECK(xoffset >= 0 && xoffset + source_width <= dest_width);
-  DCHECK(yoffset >= 0 && yoffset + source_height <= dest_height);
+  DCHECK_GE(xoffset, 0);
+  DCHECK_LE(xoffset + width, dest_width);
+  DCHECK_GE(yoffset, 0);
+  DCHECK_LE(yoffset + height, dest_height);
   if (!initialized_) {
     DLOG(ERROR) << "CopyTextureCHROMIUM: Uninitialized manager.";
     return;
   }
 
   VertexShaderId vertex_shader_id = GetVertexShaderId(flip_y);
   DCHECK_LT(static_cast<size_t>(vertex_shader_id), vertex_shaders_.size());
   FragmentShaderId fragment_shader_id = GetFragmentShaderId(
       premultiply_alpha, unpremultiply_alpha, source_target);
   DCHECK_LT(static_cast<size_t>(fragment_shader_id), fragment_shaders_.size());
@@ skipping 106 matching lines @@
   decoder->RestoreTextureState(dest_id);
   decoder->RestoreTextureUnitBindings(0);
   decoder->RestoreActiveTexture();
   decoder->RestoreProgramBindings();
   decoder->RestoreBufferBindings();
   decoder->RestoreFramebufferBindings();
   decoder->RestoreGlobalState();
 }
 
 }  // namespace gpu