Replace context parenting by sharing through mailboxes

gpu/command_buffer/tests/gl_manager.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/tests/gl_manager.h"
 
 #include <vector>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
@@ skipping 231 matching lines @@
     EXPECT_TRUE(glGetError() == GL_NONE);
     gles2_implementation_->Flush();
     gles2_implementation_.reset();
   }
   transfer_buffer_.reset();
   gles2_helper_.reset();
   command_buffer_.reset();
   if (decoder_.get()) {
     decoder_->MakeCurrent();
     decoder_->Destroy(true);
+    decoder_.reset();
   }
 }
 
 void GLManager::PumpCommands() {
   decoder_->MakeCurrent();
   gpu_scheduler_->PutChanged();
   ::gpu::CommandBuffer::State state = command_buffer_->GetState();
   if (!context_lost_allowed_) {
     ASSERT_EQ(::gpu::error::kNoError, state.error);
   }
 }
 
 bool GLManager::GetBufferChanged(int32 transfer_buffer_id) {
   return gpu_scheduler_->SetGetBuffer(transfer_buffer_id);
 }
 
 }  // namespace gpu