Shortcut ctrl+shift+T added on android.

chrome/browser/ui/android/tab_model/tab_model.h

Index: chrome/browser/ui/android/tab_model/tab_model.h
diff --git a/chrome/browser/ui/android/tab_model/tab_model.h b/chrome/browser/ui/android/tab_model/tab_model.h
index e4bd985bd4c4b170532584f1b4e947711ff4102f..ecb20c448e12878d346cc2f5bb809c53cf2f186e 100644
--- a/chrome/browser/ui/android/tab_model/tab_model.h
+++ b/chrome/browser/ui/android/tab_model/tab_model.h
@@ -8,6 +8,7 @@
 #include <memory>
 
 #include "base/macros.h"
+#include "chrome/browser/ui/android/tab_model/android_live_tab_context.h"
 #include "components/sessions/core/session_id.h"
 #include "components/sync_sessions/synced_window_delegate.h"
 #include "components/toolbar/toolbar_model.h"
@@ -24,6 +25,10 @@ namespace content {
 class WebContents;
 }
 
+namespace sessiosn {
+class LiveTabContext;
+}
+
 class Profile;
 class TabAndroid;
 
@@ -36,6 +41,8 @@ class TabModel : public content::NotificationObserver {
   virtual bool IsOffTheRecord() const;
   virtual browser_sync::SyncedWindowDelegate* GetSyncedWindowDelegate() const;
   virtual SessionID::id_type GetSessionId() const;
+  virtual const SessionID& SessionId() const;
+  virtual sessions::LiveTabContext* GetLiveTabContext() const;
 
   virtual int GetTabCount() const = 0;
   virtual int GetActiveIndex() const = 0;
@@ -78,6 +85,11 @@ class TabModel : public content::NotificationObserver {
   // The profile associated with this TabModel.
   Profile* profile_;
 
+  // The LiveTabContext associated with TabModel.
+  // Used when we access the tab restore service and write the correct

[Theresa, 2016/07/07 19:00:14]

nit: "Used to restore closed tabs through the TabRestoreService." since it's
being used for more than the window id now?

[xingliu, 2016/07/08 21:26:48]

Done.

+  // window id data into TabRestoreService::Entry.
+  std::unique_ptr<AndroidLiveTabContext> live_tab_context_;
+
   // Describes if this TabModel contains an off-the-record profile.
   bool is_off_the_record_;