Add support for all blendmodes if we have GL_KHR_blend_equation_advanced.

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 2729 matching lines @@
 
 #if defined(OS_MACOSX)
   // This is unconditionally true on mac, no need to test for it at runtime.
   caps.iosurface = true;
 #endif
 
   caps.post_sub_buffer = supports_post_sub_buffer_;
   caps.image = true;
 
   caps.blend_minmax = feature_info_->feature_flags().ext_blend_minmax;
+  caps.blend_equation_advanced =
+      feature_info_->feature_flags().blend_equation_advanced;
   return caps;
 }
 
 void GLES2DecoderImpl::UpdateCapabilities() {
   util_.set_num_compressed_texture_formats(
       validators_->compressed_texture_format.GetValues().size());
   util_.set_num_shader_binary_formats(
       validators_->shader_binary_format.GetValues().size());
 }
 
@@ skipping 8385 matching lines @@
   }
 }
 
 // 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