One-click install for the OSX App Launcher

ui/app_list/cocoa/apps_search_results_model_bridge.h

Index: ui/app_list/cocoa/apps_search_results_model_bridge.h
diff --git a/ui/app_list/cocoa/apps_search_results_model_bridge.h b/ui/app_list/cocoa/apps_search_results_model_bridge.h
index 8939d260efb599f5d4e8c0800fbbacc4d75a5f48..b36f782f8ae1766d95014f8311583a76dcce6413 100644
--- a/ui/app_list/cocoa/apps_search_results_model_bridge.h
+++ b/ui/app_list/cocoa/apps_search_results_model_bridge.h
@@ -18,6 +18,9 @@ namespace app_list {
 // and updating the NSTableView where they are displayed.
 class AppsSearchResultsModelBridge : public ui::ListModelObserver {
  public:
+  // Lightweight observer to react to icon updates on individual results.
+  class ItemObserver;
+
   explicit AppsSearchResultsModelBridge(
       AppsSearchResultsController* results_controller);
   virtual ~AppsSearchResultsModelBridge();
@@ -26,10 +29,10 @@ class AppsSearchResultsModelBridge : public ui::ListModelObserver {
   // model. A menu will be generated if it hasn't been previously requested.
   NSMenu* MenuForItem(size_t index);
 
- private:
-  // Lightweight observer to react to icon updates on individual results.
-  class ItemObserver;
+  // Returns the width taken up by any action buttons on the item at |index|.
+  CGFloat ActionButtonWidthForItem(size_t index);
 
+ private:
   void UpdateItemObservers();
   void ReloadDataForItems(size_t start, size_t count) const;