Add a new SyncedTabDelegate for Android.

chrome/browser/sessions/session_tab_helper.h

Index: chrome/browser/sessions/session_tab_helper.h
diff --git a/chrome/browser/sessions/session_tab_helper.h b/chrome/browser/sessions/session_tab_helper.h
index 2fe66696dcf4d74fb0f23ae73d95e3bf70818c23..f377da7bfb146ee3f506f4f622b4106cea484e83 100644
--- a/chrome/browser/sessions/session_tab_helper.h
+++ b/chrome/browser/sessions/session_tab_helper.h
@@ -17,6 +17,10 @@ class SessionTabHelper : public content::WebContentsObserver,
  public:
   virtual ~SessionTabHelper();
 
+  // Create for WebContents with identifier |id|.
+  static void CreateForWebContentsWithId(content::WebContents* contents,

[Nicolas Zea, 2013/05/22 20:36:37]

nit: contents can be modified, and is therefore an output, so should be ordered
after id (here and below)

[shashi, 2013/05/22 21:18:59]

In this case contents will not be modified, if there is a different contents
then we will have a new instance of SessionTabHelper.
On 2013/05/22 20:36:37, Nicolas Zea wrote:

[Nicolas Zea, 2013/05/22 22:06:06]

By modified, I include any mutable methods, which I think SetUserData is.
Otherwise it'd be good if contents were passed as a const.

[shashi, 2013/05/22 22:30:47]

Ah, I misunderstood, makes sense. Done.

+                                         const SessionID& id);
+
   // Returns the identifier used by session restore for this tab.
   const SessionID& session_id() const { return session_id_; }
 
@@ -31,6 +35,8 @@ class SessionTabHelper : public content::WebContentsObserver,
 
  private:
   explicit SessionTabHelper(content::WebContents* contents);
+  explicit SessionTabHelper(content::WebContents* contents,
+                            const SessionID& id);
   friend class content::WebContentsUserData<SessionTabHelper>;
 
   // Unique identifier of the tab for session restore. This id is only unique