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..abfd1533a359a95881356f18859fa8e93449d2ab 100644
--- a/chrome/browser/task_management/web_contents_tags.h
+++ b/chrome/browser/task_management/web_contents_tags.h
@@ -39,6 +39,17 @@ 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.

[ncarter (slow), 2015/06/19 19:50:51]

Add: "Clearing the tag is necessary only when you need to re-tag an existing
WebContents, to indicate a change in ownership."

[afakhry, 2015/06/19 21:49:22]

Done.

+  static void ClearTag(content::WebContents* web_contents);
+
  private:
   DISALLOW_COPY_AND_ASSIGN(WebContentsTags);
 };