Pass initial size and GPU preference via context attributes

content/renderer/pepper/pepper_video_encoder_host.cc

Index: content/renderer/pepper/pepper_video_encoder_host.cc
diff --git a/content/renderer/pepper/pepper_video_encoder_host.cc b/content/renderer/pepper/pepper_video_encoder_host.cc
index 3089b7a12f3fed35ba8707c22e77feaf0e3ffde4..0d0997b5047a9592fe78bb8a208c9c6cda210998 100644
--- a/content/renderer/pepper/pepper_video_encoder_host.cc
+++ b/content/renderer/pepper/pepper_video_encoder_host.cc
@@ -529,10 +529,10 @@ bool PepperVideoEncoderHost::EnsureGpuChannel() {
     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;