Introduce App Launcher for Windows.

chrome/browser/ui/app_list/app_list_controller.h

Index: chrome/browser/ui/app_list/app_list_controller.h
diff --git a/chrome/browser/ui/app_list/app_list_controller.h b/chrome/browser/ui/app_list/app_list_controller.h
index 65aaa6a424437586b4f0085c30206a2194aee5ff..c185c3f1798f3b76af018b8a2d4e9785068c3a7d 100644
--- a/chrome/browser/ui/app_list/app_list_controller.h
+++ b/chrome/browser/ui/app_list/app_list_controller.h
@@ -7,6 +7,10 @@
 
 #include <string>
 
+namespace gfx {
+class ImageSkia;
+}
+
 class Profile;
 
 // Interface to allow the view delegate to call out to whatever is controlling
@@ -29,6 +33,16 @@ class AppListController {
   virtual void ActivateApp(Profile* profile,
                            const std::string& extension_id,
                            int event_flags) = 0;
+
+  // Get the window icon to show, if any.
+  virtual gfx::ImageSkia GetWindowAppIcon() = 0;
 };
 
+namespace app_list_controller {
+
+// Show the app list.
+void ShowAppList();
+
+}
+
 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_CONTROLLER_H_