If customization includes default wallpaper, download and apply it.

ash/desktop_background/desktop_background_controller.h

 // Copyright (c) 2012 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 ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_CONTROLLER_H_
 #define ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_CONTROLLER_H_
 
 #include "ash/ash_export.h"
 #include "ash/display/display_controller.h"
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/timer/timer.h"
 #include "ui/compositor/layer.h"
 #include "ui/gfx/image/image_skia.h"
 
 typedef unsigned int SkColor;
 
 namespace aura {
 class Window;
 }
 
-namespace base {
-class CommandLine;
-}
-
 namespace ash {
 
 enum WallpaperLayout {
   // Center the wallpaper on the desktop without scaling it. The wallpaper
   // may be cropped.
   WALLPAPER_LAYOUT_CENTER,
   // Scale the wallpaper (while preserving its aspect ratio) to cover the
   // desktop; the wallpaper may be cropped.
   WALLPAPER_LAYOUT_CENTER_CROPPED,
   // Scale the wallpaper (without preserving its aspect ratio) to match the
@@ skipping 36 matching lines @@
     BACKGROUND_IMAGE,
   };
 
   DesktopBackgroundController();
   virtual ~DesktopBackgroundController();
 
   BackgroundMode desktop_background_mode() const {
     return desktop_background_mode_;
   }
 
-  void set_command_line_for_testing(base::CommandLine* command_line) {
-    command_line_for_testing_ = command_line;
-  }
-
   // Add/Remove observers.
   void AddObserver(DesktopBackgroundControllerObserver* observer);
   void RemoveObserver(DesktopBackgroundControllerObserver* observer);
 
   // Provides current image on the background, or empty gfx::ImageSkia if there
   // is no image, e.g. background is none.
   gfx::ImageSkia GetWallpaper() const;
 
   WallpaperLayout GetWallpaperLayout() const;
 
   // Initialize root window's background.
   void OnRootWindowAdded(aura::Window* root_window);
 
   // Loads builtin wallpaper asynchronously and sets to current wallpaper
   // after loaded. Returns true if the controller started loading the
   // wallpaper and false otherwise (i.e. the appropriate wallpaper was
   // already loading or loaded).
-  bool SetDefaultWallpaper(bool is_guest);
+  bool SetDefaultWallpaper(const base::FilePath& small_resolution_path,
+                           const base::FilePath& large_resolution_path);
 
   // Sets the user selected custom wallpaper. Called when user selected a file
   // from file system or changed the layout of wallpaper.
   void SetCustomWallpaper(const gfx::ImageSkia& image, WallpaperLayout layout);
 
   // Cancels |default_wallpaper_loader_| if non-NULL.
   void CancelDefaultWallpaperLoader();
 
   // Creates an empty wallpaper. Some tests require a wallpaper widget is ready
   // when running. However, the wallpaper widgets are now created
@@ skipping 10 matching lines @@
   // Returns true if the desktop moved.
   bool MoveDesktopToLockedContainer();
 
   // Move all desktop widgets to unlocked container.
   // Returns true if the desktop moved.
   bool MoveDesktopToUnlockedContainer();
 
   // Overrides DisplayController::Observer:
   virtual void OnDisplayConfigurationChanged() OVERRIDE;
 
+  // Returns true if the specified default wallpaper file is already being
+  // loaded by |wallpaper_loader_| or stored in |current_wallpaper_|.
+  // (i.e. if current wallpaper is "default" and we need to replace the default
+  // wallpaper with another file, we need to initiate SetDefaultWallpaper() )
+  bool DefaultWallpaperFileIsAlreadyLoadingOrLoaded(
+      const base::FilePath& image_file) const;
+
  private:
   friend class DesktopBackgroundControllerTest;
   FRIEND_TEST_ALL_PREFIXES(DesktopBackgroundControllerTest, GetMaxDisplaySize);
 
   // An operation to asynchronously loads wallpaper.
   class WallpaperLoader;
 
   // Returns true if the specified default wallpaper is already being
   // loaded by |wallpaper_loader_| or stored in |current_wallpaper_|.
+  // (i.e. no need to reload if exactly duplicate request received)
   bool DefaultWallpaperIsAlreadyLoadingOrLoaded(
       const base::FilePath& image_file, int image_resource_id) const;
 
   // Returns true if the specified custom wallpaper is already stored
   // in |current_wallpaper_|.
   bool CustomWallpaperIsAlreadyLoaded(const gfx::ImageSkia& image) const;
 
   // Creates view for all root windows, or notifies them to repaint if they
   // already exist.
   void SetDesktopBackgroundImageMode();
@@ skipping 26 matching lines @@
   void set_wallpaper_reload_delay_for_test(bool value) {
     wallpaper_reload_delay_ = value;
   }
 
   // Returns the maximum size of all displays combined in native
   // resolutions.  Note that this isn't the bounds of the display who
   // has maximum resolutions. Instead, this returns the size of the
   // maximum width of all displays, and the maximum height of all displays.
   static gfx::Size GetMaxDisplaySizeInNative();
 
-  // If non-NULL, used in place of the real command line.
-  base::CommandLine* command_line_for_testing_;
-
   // Can change at runtime.
   bool locked_;
 
   BackgroundMode desktop_background_mode_;
 
   SkColor background_color_;
 
   ObserverList<DesktopBackgroundControllerObserver> observers_;
 
   // The current wallpaper.
@@ skipping 15 matching lines @@
   base::OneShotTimer<DesktopBackgroundController> timer_;
 
   int wallpaper_reload_delay_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopBackgroundController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_CONTROLLER_H_