Make the App Info Dialog appear modal

ui/app_list/views/app_list_view.h

Index: ui/app_list/views/app_list_view.h
diff --git a/ui/app_list/views/app_list_view.h b/ui/app_list/views/app_list_view.h
index 03129774b83d77f39cd5647ffd644aeff9728179..94178e0d4a9f7830200133c150b95113e1d22111 100644
--- a/ui/app_list/views/app_list_view.h
+++ b/ui/app_list/views/app_list_view.h
@@ -18,6 +18,10 @@ namespace base {
 class FilePath;
 }
 
+namespace test {
+class AppListViewTestApi;
+}
+
 namespace app_list {
 class ApplicationDragAndDropHost;
 class AppListMainView;
@@ -76,6 +80,10 @@ class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
 
   void UpdateBounds();
 
+  // Enables/disables a semi-transparent overlay over the app list (good for
+  // hiding the app list when a modal dialog is being shown).
+  void SetAppListOverlayVisible(bool visible);
+
   // Returns true if the app list should be centered and in landscape mode.
   bool ShouldCenterWindow() const;
 
@@ -108,6 +116,8 @@ class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
   AppListMainView* app_list_main_view() { return app_list_main_view_; }
 
  private:
+  friend class test::AppListViewTestApi;
+
   void InitAsBubbleInternal(gfx::NativeView parent,
                             PaginationModel* pagination_model,
                             views::BubbleBorder::Arrow arrow,
@@ -149,6 +159,10 @@ class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
   SigninView* signin_view_;
   SpeechView* speech_view_;
 
+  // A semi-transparent white overlay that covers the app list while dialogs are
+  // open.
+  views::View* overlay_view_;
+
   ObserverList<AppListViewObserver> observers_;
   scoped_ptr<HideViewAnimationObserver> animation_observer_;