Mandoline: Enable more GL commands which are used by WebGL.

components/html_viewer/web_graphics_context_3d_command_buffer_impl.cc

 // Copyright 2015 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 "components/html_viewer/web_graphics_context_3d_command_buffer_impl.h"
 
 #include "components/mus/public/interfaces/gpu.mojom.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "mojo/application/public/cpp/application_impl.h"
 #include "mojo/cc/context_provider_mojo.h"
@@ skipping 37 matching lines @@
       attrib_vector.data(),
       &ContextLostThunk,
       this,
       mojo::Environment::GetDefaultAsyncWaiter());
   context_gl_.reset(new mojo::MojoGLES2Impl(gles2_context_));
   setGLInterface(context_gl_.get());
 }
 
 WebGraphicsContext3DCommandBufferImpl::
     ~WebGraphicsContext3DCommandBufferImpl() {
+  if (gles2_context_)
+    MojoGLES2DestroyContext(gles2_context_);
 }
 
 // static
 WebGraphicsContext3DCommandBufferImpl*
 WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
     mojo::ApplicationImpl* app,
     const GURL& active_url,
     const blink::WebGraphicsContext3D::Attributes& attributes,
     blink::WebGraphicsContext3D* share_context,
     blink::WebGLInfo* gl_info) {
   return new WebGraphicsContext3DCommandBufferImpl(
       app, active_url, attributes, share_context, gl_info);
 }
 
 void WebGraphicsContext3DCommandBufferImpl::ContextLost() {
   if (context_lost_callback_)
     context_lost_callback_->onContextLost();
 }
 
 }  // namespace html_viewer