New Task Manager - Phase 1.3.2.B: Implement Tab Contents Task Providing (Prerender)

chrome/browser/task_management/web_contents_tags.h

Index: chrome/browser/task_management/web_contents_tags.h
diff --git a/chrome/browser/task_management/web_contents_tags.h b/chrome/browser/task_management/web_contents_tags.h
index d81b88ebcd62e45ed19bef45c4e6a1586b6a2cd0..3c929393ba43c1821a9dd84f93824287c43875f7 100644
--- a/chrome/browser/task_management/web_contents_tags.h
+++ b/chrome/browser/task_management/web_contents_tags.h
@@ -39,6 +39,19 @@ class WebContentsTags {
   // not have to be cleaned up by the caller, as it is owned by |web_contents|.
   static void CreateForDevToolsContents(content::WebContents* web_contents);
 
+  // Tag a WebContents owned by the PrerenderManager so that it shows up in the
+  // task manager. Calling this function creates a PrerenderTag, and attaches it
+  // to |web_contents|. If an instance is already attached, this does nothing.
+  // The resulting tag does not have to be cleaned up by the caller, as it is
+  // owned by |web_contents|.
+  static void CreateForPrerenderContents(content::WebContents* web_contents);
+
+  // Clears the task-manager tag, created by any of the above functions, from
+  // the given |web_contents| if any.
+  // Clearing the tag is necessary only when you need to re-tag an existing
+  // WebContents, to indicate a change in ownership.
+  static void ClearTag(content::WebContents* web_contents);
+
  private:
   DISALLOW_COPY_AND_ASSIGN(WebContentsTags);
 };