Mandoline: Add WebGL support

components/mus/gles2/command_buffer_driver.cc

 // Copyright 2013 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/mus/gles2/command_buffer_driver.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/shared_memory.h"
 #include "components/mus/gles2/command_buffer_type_conversions.h"
@@ skipping 97 matching lines @@
   decoder_->set_engine(scheduler_.get());
   decoder_->SetResizeCallback(
       base::Bind(&CommandBufferDriver::OnResize, base::Unretained(this)));
   decoder_->SetWaitSyncPointCallback(base::Bind(
       &CommandBufferDriver::OnWaitSyncPoint, base::Unretained(this)));
 
   gpu::gles2::DisallowedFeatures disallowed_features;
 
   // TODO(piman): attributes.
   std::vector<int32> attrib_vector;
-  if (!decoder_->Initialize(surface_, context_, false /* offscreen */,
+  if (!decoder_->Initialize(surface_, context_, true /* offscreen */,

[sky, 2015/09/15 22:10:59]

Should the comment read onscreen now?

[Peng, 2015/09/16 13:54:59]

Actually not. The parameter's name is offscreen.

I changed the code to make it more readable.

Done

                             gfx::Size(1, 1), disallowed_features,
                             attrib_vector))
     return false;
 
   command_buffer_->SetPutOffsetChangeCallback(base::Bind(
       &gpu::GpuScheduler::PutChanged, base::Unretained(scheduler_.get())));
   command_buffer_->SetGetBufferChangeCallback(base::Bind(
       &gpu::GpuScheduler::SetGetBuffer, base::Unretained(scheduler_.get())));
   command_buffer_->SetParseErrorCallback(
       base::Bind(&CommandBufferDriver::OnParseError, base::Unretained(this)));
@@ skipping 167 matching lines @@
 
 void CommandBufferDriver::DestroyDecoder() {
   if (decoder_) {
     bool have_context = decoder_->MakeCurrent();
     decoder_->Destroy(have_context);
     decoder_.reset();
   }
 }
 
 }  // namespace gles2