Use webGL context creation attribute to activate GLSL validation

webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.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 "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
 #include <GLES2/gl2.h>
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES 1
 #endif
@@ skipping 87 matching lines @@
 }
 
 WebGraphicsContext3DInProcessCommandBufferImpl::
     WebGraphicsContext3DInProcessCommandBufferImpl(
         scoped_ptr< ::gpu::GLInProcessContext> context,
         const blink::WebGraphicsContext3D::Attributes& attributes,
         bool lose_context_when_out_of_memory,
         bool is_offscreen,
         gfx::AcceleratedWidget window)
     : share_resources_(attributes.shareResources),
-      webgl_context_(attributes.noExtensions),
+      webgl_context_(attributes.webGL),
       is_offscreen_(is_offscreen),
       window_(window),
       context_(context.Pass()) {
   ConvertAttributes(attributes, &attribs_);
   attribs_.lose_context_when_out_of_memory = lose_context_when_out_of_memory;
 }
 
 WebGraphicsContext3DInProcessCommandBufferImpl::
     ~WebGraphicsContext3DInProcessCommandBufferImpl() {
 }
@@ skipping 82 matching lines @@
 void WebGraphicsContext3DInProcessCommandBufferImpl::OnContextLost() {
   // TODO(kbr): improve the precision here.
   context_lost_reason_ = GL_UNKNOWN_CONTEXT_RESET_ARB;
   if (context_lost_callback_) {
     context_lost_callback_->onContextLost();
   }
 }
 
 }  // namespace gpu
 }  // namespace webkit