Update GL_CHROMIUM_image with support for compressed formats.

gpu/command_buffer/client/gles2_implementation.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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
@@ skipping 5182 matching lines @@
                      << sync_point << ")");
   DCHECK(capabilities_.future_sync_points);
   helper_->CommandBufferHelper::Flush();
   gpu_control_->RetireSyncPoint(sync_point);
 }
 
 namespace {
 
 bool ValidImageFormat(GLenum internalformat) {
   switch (internalformat) {
+    case GL_ATC_RGB_AMD:
+    case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
+    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+    case GL_ETC1_RGB8_OES:

[piman, 2015/05/13 16:41:57]

Can we return false if the corresponding extensions are not supported?
There's a bit for each of them in the GLES2Implementation's capabilities_ so it
should be straightforward.

[christiank, 2015/05/18 11:10:52]

Good idea, fixed.

     case GL_R8:
     case GL_RGB:
     case GL_RGBA:
     case GL_BGRA_EXT:
       return true;
     default:
       return false;
   }
 }
 
@@ skipping 287 matching lines @@
   CheckGLError();
 }
 
 // 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/client/gles2_implementation_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu