Hook up Chrome's wallpaper picker for mash.

ash/mus/sysui_application.cc

Index: ash/mus/sysui_application.cc
diff --git a/ash/mus/sysui_application.cc b/ash/mus/sysui_application.cc
index a43fb159f9ff270935e56f2571062d269fb66399..da95f91d3fec50def3ea3e8b3f12b97f32b6f8a2 100644
--- a/ash/mus/sysui_application.cc
+++ b/ash/mus/sysui_application.cc
@@ -9,7 +9,7 @@
 #include <string>
 #include <vector>
 
-#include "ash/desktop_background/desktop_background_controller.h"
+#include "ash/display/display_manager.h"
 #include "ash/host/ash_window_tree_host_init_params.h"
 #include "ash/host/ash_window_tree_host_platform.h"
 #include "ash/material_design/material_design_controller.h"
@@ -18,6 +18,7 @@
 #include "ash/mus/shelf_delegate_mus.h"
 #include "ash/mus/shell_delegate_mus.h"
 #include "ash/mus/stub_context_factory.h"
+#include "ash/mus/user_wallpaper_delegate_mus.h"
 #include "ash/root_window_settings.h"
 #include "ash/shell.h"
 #include "ash/shell_init_params.h"
@@ -34,6 +35,8 @@
 #include "ui/aura/env.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
+#include "ui/display/display.h"
+#include "ui/display/screen.h"
 #include "ui/message_center/message_center.h"
 #include "ui/platform_window/stub/stub_window.h"
 #include "ui/views/mus/aura_init.h"
@@ -237,7 +240,6 @@ class AshInit {
         ash::user::LOGGED_IN_USER);
 
     ash::Shell::GetPrimaryRootWindow()->GetHost()->Show();
-    SetupWallpaper(SkColorSetARGB(255, 0, 255, 0));
   }
 
   void InitializeResourceBundle(::shell::Connector* connector) {
@@ -266,24 +268,6 @@ class AshInit {
                            ui::SCALE_FACTOR_200P);
   }
 
-  void SetupWallpaper(SkColor color) {
-    SkBitmap bitmap;
-    bitmap.allocN32Pixels(16, 16);
-    bitmap.eraseColor(color);
-#if !defined(NDEBUG)
-    // In debug builds we generate a simple pattern that allows visually
-    // notice if transparency is broken.
-    {
-      SkAutoLockPixels alp(bitmap);
-      *bitmap.getAddr32(0, 0) = SkColorSetRGB(0, 0, 0);
-    }
-#endif
-    gfx::ImageSkia wallpaper = gfx::ImageSkia::CreateFrom1xBitmap(bitmap);
-    ash::Shell::GetInstance()
-        ->desktop_background_controller()
-        ->SetWallpaperImage(wallpaper, wallpaper::WALLPAPER_LAYOUT_TILE);
-  }
-
   void InitializeComponents() {
     message_center::MessageCenter::Initialize();
 
@@ -320,16 +304,26 @@ void SysUIApplication::Initialize(::shell::Connector* connector,
 
 bool SysUIApplication::AcceptConnection(::shell::Connection* connection) {
   connection->AddInterface<mash::shelf::mojom::ShelfController>(this);
+  connection->AddInterface<mash::mojom::WallpaperController>(this);
   return true;
 }
 
 void SysUIApplication::Create(
     ::shell::Connection* connection,
-    mojo::InterfaceRequest<mash::shelf::mojom::ShelfController> request) {
+    mash::shelf::mojom::ShelfControllerRequest request) {
   mash::shelf::mojom::ShelfController* shelf_controller =
       static_cast<ShelfDelegateMus*>(Shell::GetInstance()->GetShelfDelegate());
   shelf_controller_bindings_.AddBinding(shelf_controller, std::move(request));
 }
 
+void SysUIApplication::Create(::shell::Connection* connection,
+                              mash::mojom::WallpaperControllerRequest request) {
+  mash::mojom::WallpaperController* wallpaper_controller =
+      static_cast<UserWallpaperDelegateMus*>(
+          Shell::GetInstance()->user_wallpaper_delegate());
+  wallpaper_controller_bindings_.AddBinding(wallpaper_controller,
+                                            std::move(request));
+}
+
 }  // namespace sysui
 }  // namespace ash