Add a simple browser UI (with url bar)

mandoline/ui/browser/browser.h

 // 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.
 
 #ifndef MANDOLINE_UI_BROWSER_BROWSER_H_
 #define MANDOLINE_UI_BROWSER_BROWSER_H_
 
 #include "base/memory/weak_ptr.h"
 #include "components/view_manager/public/cpp/view_manager.h"
 #include "components/view_manager/public/cpp/view_manager_delegate.h"
-#include "components/view_manager/public/cpp/view_observer.h"
 #include "components/window_manager/window_manager_app.h"
 #include "components/window_manager/window_manager_delegate.h"
 #include "mandoline/services/navigation/public/interfaces/navigation.mojom.h"
 #include "mandoline/ui/browser/navigator_host_impl.h"
 #include "third_party/mojo/src/mojo/public/cpp/application/application_delegate.h"
 #include "third_party/mojo/src/mojo/public/cpp/application/application_impl.h"
 #include "third_party/mojo/src/mojo/public/cpp/application/connect.h"
 #include "third_party/mojo/src/mojo/public/cpp/application/service_provider_impl.h"
 #include "ui/mojo/events/input_events.mojom.h"
 
 namespace mandoline {
 
+class BrowserUI;
 class MergedServiceProvider;
 
 class Browser : public mojo::ApplicationDelegate,
                 public mojo::ViewManagerDelegate,
-                public mojo::ViewObserver,
                 public window_manager::WindowManagerDelegate,
                 public mojo::InterfaceFactory<mojo::NavigatorHost> {
  public:
   Browser();
   ~Browser() override;
 
   base::WeakPtr<Browser> GetWeakPtr();
 
   void ReplaceContentWithURL(const mojo::String& url);
 
  private:
   // Overridden from mojo::ApplicationDelegate:
   void Initialize(mojo::ApplicationImpl* app) override;
   bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override;
   bool ConfigureOutgoingConnection(
       mojo::ApplicationConnection* connection) override;
 
   // Overridden from mojo::ViewManagerDelegate:
   void OnEmbed(mojo::View* root,
                mojo::InterfaceRequest<mojo::ServiceProvider> services,
                mojo::ServiceProviderPtr exposed_services) override;
   void OnViewManagerDisconnected(mojo::ViewManager* view_manager) override;
 
-  // Overriden from mojo::ViewObserver:
-  void OnViewDestroyed(mojo::View* view) override;
-  void OnViewBoundsChanged(mojo::View* view,
-                           const mojo::Rect& old_bounds,
-                           const mojo::Rect& new_bounds) override;
-
   // Overridden from WindowManagerDelegate:
   void Embed(const mojo::String& url,
              mojo::InterfaceRequest<mojo::ServiceProvider> services,
              mojo::ServiceProviderPtr exposed_services) override;
   void OnAcceleratorPressed(mojo::View* view,
                             mojo::KeyboardCode keyboard_code,
                             mojo::EventFlags flags) override;
 
   // Overridden from mojo::InterfaceFactory<mojo::NavigatorHost>:
   void Create(mojo::ApplicationConnection* connection,
               mojo::InterfaceRequest<mojo::NavigatorHost> request) override;
 
+  void LayoutContent();
+
   scoped_ptr<window_manager::WindowManagerApp> window_manager_app_;
 
   // Only support being embedded once, so both application-level
   // and embedding-level state are shared on the same object.
   mojo::View* root_;
   mojo::View* content_;
   std::string default_url_;
   std::string pending_url_;
 
   mojo::ServiceProviderImpl exposed_services_impl_;
   scoped_ptr<MergedServiceProvider> merged_service_provider_;
 
   NavigatorHostImpl navigator_host_;
 
+  scoped_ptr<BrowserUI> ui_;
+
   base::WeakPtrFactory<Browser> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 }  // namespace mandoline
 
 #endif  // MANDOLINE_UI_BROWSER_BROWSER_H_