Highlight background pages in task manager if user clicks View Background Pages.

chrome/browser/ui/cocoa/task_manager_mac.h

Index: chrome/browser/ui/cocoa/task_manager_mac.h
diff --git a/chrome/browser/ui/cocoa/task_manager_mac.h b/chrome/browser/ui/cocoa/task_manager_mac.h
index 75c9811ec1fe969210d8a78bbc4f80d7aaf6fe41..211a86d05ac84a4df2c8e1f55f0a14da0241375d 100644
--- a/chrome/browser/ui/cocoa/task_manager_mac.h
+++ b/chrome/browser/ui/cocoa/task_manager_mac.h
@@ -29,6 +29,7 @@ class TaskManagerMac;
   TaskManagerMac* taskManagerObserver_;  // weak
   TaskManager* taskManager_;  // weak
   TaskManagerModel* model_;  // weak
+  bool highlightBackgroundResources_;
 
   scoped_nsobject<WindowSizeAutosaver> size_saver_;
 
@@ -39,10 +40,14 @@ class TaskManagerMac;
 
   // Descriptor of the current sort column.
   scoped_nsobject<NSSortDescriptor> currentSortDescriptor_;
+
+  // Color we use for background resources.
+  scoped_nsobject<NSColor> backgroundResourceColor_;
 }
 
 // Creates and shows the task manager's window.
-- (id)initWithTaskManagerObserver:(TaskManagerMac*)taskManagerObserver;
+- (id)initWithTaskManagerObserver:(TaskManagerMac*)taskManagerObserver
+     highlightBackgroundResources:(bool)highlightBackgroundResources;
 
 // Refreshes all data in the task manager table.
 - (void)reloadData;
@@ -65,7 +70,7 @@ class TaskManagerMac;
 class TaskManagerMac : public TaskManagerModelObserver,
                        public TableRowNSImageCache::Table {
  public:
-  TaskManagerMac(TaskManager* task_manager);
+  TaskManagerMac(TaskManager* task_manager, bool highlight_background);
   virtual ~TaskManagerMac();
 
   // TaskManagerModelObserver
@@ -83,8 +88,9 @@ class TaskManagerMac : public TaskManagerModelObserver,
   virtual SkBitmap GetIcon(int r) const;
 
   // Creates the task manager if it doesn't exist; otherwise, it activates the
-  // existing task manager window.
-  static void Show();
+  // existing task manager window. Highlights background resources if
+  // |highlight_background_resources| is true.
+  static void Show(bool highlight_background_resources);
 
   // Returns the TaskManager observed by |this|.
   TaskManager* task_manager() { return task_manager_; }
@@ -94,6 +100,9 @@ class TaskManagerMac : public TaskManagerModelObserver,
 
   // Returns the cocoa object. Used for testing.
   TaskManagerWindowController* cocoa_controller() { return window_controller_; }
+
+  // Returns true if the resource at this location is a background resource.
+  bool IsBackgroundRow(int row) const;
  private:
   // The task manager.
   TaskManager* const task_manager_;  // weak
@@ -108,6 +117,9 @@ class TaskManagerMac : public TaskManagerModelObserver,
   // Caches favicons for all rows. Needs to be initalized after |model_|.
   TableRowNSImageCache icon_cache_;
 
+  // If true, highlight background resources.
+  bool highlight_background_resources_;
+
   // An open task manager window. There can only be one open at a time. This
   // is reset to NULL when the window is closed.
   static TaskManagerMac* instance_;