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

chrome/browser/ui/browser_window.h

Index: chrome/browser/ui/browser_window.h
diff --git a/chrome/browser/ui/browser_window.h b/chrome/browser/ui/browser_window.h
index 525150217e20c201cee05c9a6376046d25e12fb6..c2d1b37caddc760cfc273773852e5be61ce117d9 100644
--- a/chrome/browser/ui/browser_window.h
+++ b/chrome/browser/ui/browser_window.h
@@ -208,6 +208,9 @@ class BrowserWindow {
   // Shows the Task manager.
   virtual void ShowTaskManager() = 0;
 
+  // Shows task information related to background pages.
+  virtual void ShowBackgroundPages() = 0;
+
   // Shows the Bookmark bubble. |url| is the URL being bookmarked,
   // |already_bookmarked| is true if the url is already bookmarked.
   virtual void ShowBookmarkBubble(const GURL& url, bool already_bookmarked) = 0;