ash/mash: Fix launching ash as a mus-app in chromeos.

ash/mus/shell_delegate_mus.cc

 // Copyright 2016 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 "ash/mus/shell_delegate_mus.h"
 
 #include "ash/default_accessibility_delegate.h"
 #include "ash/default_user_wallpaper_delegate.h"
+#include "ash/gpu_support_stub.h"
+#include "ash/media_delegate.h"
 #include "ash/mus/shelf_delegate_mus.h"
 #include "ash/session/session_state_delegate.h"
 #include "ash/system/tray/default_system_tray_delegate.h"
 #include "base/strings/string16.h"
 #include "components/user_manager/user_info_impl.h"
 #include "ui/gfx/image/image.h"
 
 namespace ash {
 namespace sysui {
 
@@ skipping 46 matching lines @@
 
  private:
   bool screen_locked_;
 
   // A pseudo user info.
   scoped_ptr<user_manager::UserInfo> user_info_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionStateDelegateStub);
 };
 
+class MediaDelegateStub : public MediaDelegate {
+ public:
+  MediaDelegateStub() {}
+  ~MediaDelegateStub() override {}
+
+  // MediaDelegate:
+  void HandleMediaNextTrack() override { NOTIMPLEMENTED(); }
+  void HandleMediaPlayPause() override { NOTIMPLEMENTED(); }
+  void HandleMediaPrevTrack() override { NOTIMPLEMENTED(); }
+  MediaCaptureState GetMediaCaptureState(UserIndex index) override {
+    NOTIMPLEMENTED();
+    return MEDIA_CAPTURE_NONE;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MediaDelegateStub);
+};
+
 }  // namespace
 
 ShellDelegateMus::ShellDelegateMus() {}
 ShellDelegateMus::~ShellDelegateMus() {}
 
 bool ShellDelegateMus::IsFirstRunAfterBoot() const {
   NOTIMPLEMENTED();
   return false;
 }
 
@@ skipping 55 matching lines @@
 
 app_list::AppListViewDelegate* ShellDelegateMus::GetAppListViewDelegate() {
   NOTIMPLEMENTED();
   return nullptr;
 }
 
 ShelfDelegate* ShellDelegateMus::CreateShelfDelegate(ShelfModel* model) {
   return new ShelfDelegateMus(model);
 }
 
-ash::SystemTrayDelegate* ShellDelegateMus::CreateSystemTrayDelegate() {
+SystemTrayDelegate* ShellDelegateMus::CreateSystemTrayDelegate() {
   NOTIMPLEMENTED() << " Using the default SystemTrayDelegate implementation";
   return new DefaultSystemTrayDelegate;
 }
 
-ash::UserWallpaperDelegate* ShellDelegateMus::CreateUserWallpaperDelegate() {
+UserWallpaperDelegate* ShellDelegateMus::CreateUserWallpaperDelegate() {
   NOTIMPLEMENTED() << " Using the default UserWallpaperDelegate implementation";
   return new DefaultUserWallpaperDelegate();
 }
 
-ash::SessionStateDelegate* ShellDelegateMus::CreateSessionStateDelegate() {
+SessionStateDelegate* ShellDelegateMus::CreateSessionStateDelegate() {
   NOTIMPLEMENTED() << " Using a stub SessionStateDeleagte implementation";
   return new SessionStateDelegateStub;
 }
 
-ash::AccessibilityDelegate* ShellDelegateMus::CreateAccessibilityDelegate() {
+AccessibilityDelegate* ShellDelegateMus::CreateAccessibilityDelegate() {
   NOTIMPLEMENTED() << " Using the default AccessibilityDelegate implementation";
   return new DefaultAccessibilityDelegate;
 }
 
-ash::NewWindowDelegate* ShellDelegateMus::CreateNewWindowDelegate() {
+NewWindowDelegate* ShellDelegateMus::CreateNewWindowDelegate() {
   NOTIMPLEMENTED();
   return nullptr;
 }
 
-ash::MediaDelegate* ShellDelegateMus::CreateMediaDelegate() {
-  NOTIMPLEMENTED();
-  return nullptr;
+MediaDelegate* ShellDelegateMus::CreateMediaDelegate() {
+  NOTIMPLEMENTED() << " Using a stub MediaDelegate implementation";
+  return new MediaDelegateStub;
 }
 
 ui::MenuModel* ShellDelegateMus::CreateContextMenu(
     aura::Window* root_window,
-    ash::ShelfItemDelegate* item_delegate,
-    ash::ShelfItem* item) {
+    ShelfItemDelegate* item_delegate,
+    ShelfItem* item) {
   NOTIMPLEMENTED();
   return nullptr;
 }
 
 GPUSupport* ShellDelegateMus::CreateGPUSupport() {
-  NOTIMPLEMENTED();
-  return nullptr;
+  NOTIMPLEMENTED() << " Using a stub GPUSupport implementation";
+  return new GPUSupportStub();
 }
 
 base::string16 ShellDelegateMus::GetProductName() const {
   NOTIMPLEMENTED();
   return base::string16();
 }
 
 gfx::Image ShellDelegateMus::GetDeprecatedAcceleratorImage() const {
   NOTIMPLEMENTED();
   return gfx::Image();
 }
 
 }  // namespace sysui
 }  // namespace ash