Provide task runner to GLES2Impl / CommandBuffer at creation

ppapi/shared_impl/ppb_graphics_3d_shared.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 "ppapi/shared_impl/ppb_graphics_3d_shared.h"
 
 #include "base/logging.h"
 #include "gpu/command_buffer/client/gles2_cmd_helper.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "gpu/command_buffer/client/shared_memory_limits.h"
@@ skipping 120 matching lines @@
   const int32_t kMinTransferBufferSize = 256 * 1024;
   const int32_t kMaxTransferBufferSize = 16 * 1024 * 1024;
   transfer_buffer_.reset(new gpu::TransferBuffer(gles2_helper_.get()));
 
   const bool bind_creates_resources = true;
   const bool lose_context_when_out_of_memory = false;
   const bool support_client_side_arrays = true;
 
   // Create the object exposing the OpenGL API.
   gles2_impl_.reset(new gpu::gles2::GLES2Implementation(
-      gles2_helper_.get(),
-      share_gles2 ? share_gles2->share_group() : NULL,
-      transfer_buffer_.get(),
-      bind_creates_resources,
-      lose_context_when_out_of_memory,
-      support_client_side_arrays,
-      GetGpuControl()));
+      gles2_helper_.get(), share_gles2 ? share_gles2->share_group() : NULL,
+      transfer_buffer_.get(), bind_creates_resources,
+      lose_context_when_out_of_memory, support_client_side_arrays,
+      GetGpuControl(), nullptr));
 
   if (!gles2_impl_->Initialize(
           transfer_buffer_size, kMinTransferBufferSize,
           std::max(kMaxTransferBufferSize, transfer_buffer_size),
           gpu::SharedMemoryLimits::kNoLimit)) {
     return false;
   }
 
   gles2_impl_->TraceBeginCHROMIUM("gpu_toplevel", "PPAPIContext");
 
   return true;
 }
 
 void PPB_Graphics3D_Shared::DestroyGLES2Impl() {
   gles2_impl_.reset();
   transfer_buffer_.reset();
   gles2_helper_.reset();
 }
 
 }  // namespace ppapi