Add a Display and ContextProvider concept to mojom, use to recreate

services/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 "services/gles2/command_buffer_driver.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/shared_memory.h"
 #include "gpu/command_buffer/common/constants.h"
@@ skipping 37 matching lines @@
 }  // anonymous namespace
 
 CommandBufferDriver::Client::~Client() {
 }
 
 CommandBufferDriver::CommandBufferDriver(
     gfx::GLShareGroup* share_group,
     gpu::gles2::MailboxManager* mailbox_manager,
     gpu::SyncPointManager* sync_point_manager)
     : CommandBufferDriver(gfx::kNullAcceleratedWidget,
-                          gfx::Size(1, 1),
                           share_group,
                           mailbox_manager,
                           sync_point_manager) {
 }
 
 CommandBufferDriver::CommandBufferDriver(
     gfx::AcceleratedWidget widget,
-    const gfx::Size& size,
     gfx::GLShareGroup* share_group,
     gpu::gles2::MailboxManager* mailbox_manager,
     gpu::SyncPointManager* sync_point_manager)
     : client_(nullptr),
       widget_(widget),
-      size_(size),
       share_group_(share_group),
       mailbox_manager_(mailbox_manager),
       sync_point_manager_(sync_point_manager),
       weak_factory_(this) {
 }
 
 CommandBufferDriver::~CommandBufferDriver() {
   if (decoder_) {
     bool have_context = decoder_->MakeCurrent();
     decoder_->Destroy(have_context);
   }
 }
 
 void CommandBufferDriver::Initialize(
     mojo::CommandBufferSyncClientPtr sync_client,
     mojo::CommandBufferLostContextObserverPtr loss_observer,
     mojo::ScopedSharedBufferHandle shared_state) {
   sync_client_ = sync_client.Pass();
   loss_observer_ = loss_observer.Pass();
   bool success = DoInitialize(shared_state.Pass());
   mojo::GpuCapabilitiesPtr capabilities =
       success ? mojo::GpuCapabilities::From(decoder_->GetCapabilities())
               : mojo::GpuCapabilities::New();
   sync_client_->DidInitialize(success, capabilities.Pass());
 }
 
 bool CommandBufferDriver::DoInitialize(
     mojo::ScopedSharedBufferHandle shared_state) {
   if (widget_ == gfx::kNullAcceleratedWidget)
-    surface_ = gfx::GLSurface::CreateOffscreenGLSurface(size_);
+    surface_ = gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1));
   else {
     surface_ = gfx::GLSurface::CreateViewGLSurface(widget_);
     if (auto vsync_provider = surface_->GetVSyncProvider()) {
       vsync_provider->GetVSyncParameters(
           base::Bind(&CommandBufferDriver::OnUpdateVSyncParameters,
                      weak_factory_.GetWeakPtr()));
     }
   }
 
   if (!surface_.get())
@@ skipping 28 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 */, size_,
-                            disallowed_features, attrib_vector))
+  if (!decoder_->Initialize(surface_, context_, false /* offscreen */,
+                            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)));
 
   // TODO(piman): other callbacks
@@ skipping 80 matching lines @@
   client_->DidLoseContext();
 }
 
 void CommandBufferDriver::OnUpdateVSyncParameters(
     const base::TimeTicks timebase,
     const base::TimeDelta interval) {
   client_->UpdateVSyncParameters(timebase, interval);
 }
 
 }  // namespace gles2