Split surface id and simplify connecting to surfaces service

services/view_manager/display_manager.cc

 // Copyright 2014 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/view_manager/display_manager.h"
 
 #include "base/numerics/safe_conversions.h"
 #include "cc/surfaces/surface_id_allocator.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
 #include "mojo/converters/surfaces/surfaces_type_converters.h"
@@ skipping 121 matching lines @@
   surface_.set_client(this);
   surface_id_allocator_.reset(new cc::SurfaceIdAllocator(id_namespace));
   Draw();
 }
 
 void DefaultDisplayManager::Draw() {
   if (!surface_)
     return;
   if (surface_id_.is_null()) {
     surface_id_ = surface_id_allocator_->GenerateId();
-    surface_->CreateSurface(mojo::SurfaceId::From(surface_id_),
-                            Size::From(size_));
+    surface_->CreateSurface(mojo::SurfaceId::From(surface_id_));
   }
 
   Rect rect;
   rect.width = size_.width();
   rect.height = size_.height();
   auto pass = CreateDefaultPass(1, rect);
   pass->damage_rect = Rect::From(dirty_rect_);
 
   DrawViewTree(pass.get(), connection_manager_->root(), gfx::Vector2d(), 1.0f);
 
@@ skipping 17 matching lines @@
 void DefaultDisplayManager::OnSizeChanged(mojo::SizePtr size) {
   size_ = size.To<gfx::Size>();
   connection_manager_->root()->SetBounds(gfx::Rect(size_));
   if (surface_id_.is_null())
     return;
   surface_->DestroySurface(mojo::SurfaceId::From(surface_id_));
   surface_id_ = cc::SurfaceId();
   SchedulePaint(connection_manager_->root(), gfx::Rect(size_));
 }
 
+void DefaultDisplayManager::SetIdNamespace(uint32_t id_namespace) {
+}
+
 void DefaultDisplayManager::ReturnResources(
     mojo::Array<mojo::ReturnedResourcePtr> resources) {
   DCHECK_EQ(0u, resources.size());
 }
 
 }  // namespace view_manager