Pass initial size and GPU preference via context attributes

content/renderer/pepper/pepper_video_encoder_host.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 "content/renderer/pepper/pepper_video_encoder_host.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/shared_memory.h"
@@ skipping 511 matching lines @@
 
   // There is no guarantee that we have a 3D context to work with. So
   // we create a dummy command buffer to communicate with the gpu process.
   scoped_refptr<gpu::GpuChannelHost> channel =
       RenderThreadImpl::current()->EstablishGpuChannelSync(
           CAUSE_FOR_GPU_LAUNCH_PEPPERVIDEOENCODERACCELERATOR_INITIALIZE);
   if (!channel)
     return false;
 
   command_buffer_ = gpu::CommandBufferProxyImpl::Create(
-      std::move(channel), gpu::kNullSurfaceHandle, gfx::Size(), nullptr,
+      std::move(channel), gpu::kNullSurfaceHandle, nullptr,
       gpu::GPU_STREAM_DEFAULT, gpu::GpuStreamPriority::NORMAL,
       gpu::gles2::ContextCreationAttribHelper(), GURL::EmptyGURL(),
-      gl::PreferIntegratedGpu, base::ThreadTaskRunnerHandle::Get());
+      base::ThreadTaskRunnerHandle::Get());
   if (!command_buffer_) {
     Close();
     return false;
   }
 
   command_buffer_->SetGpuControlClient(this);
 
   return true;
 }
 
@@ skipping 133 matching lines @@
 }
 
 uint8_t* PepperVideoEncoderHost::ShmHandleToAddress(int32_t buffer_id) {
   DCHECK(RenderThreadImpl::current());
   DCHECK_GE(buffer_id, 0);
   DCHECK_LT(buffer_id, static_cast<int32_t>(shm_buffers_.size()));
   return static_cast<uint8_t*>(shm_buffers_[buffer_id]->shm->memory());
 }
 
 }  // namespace content