Shortcut ctrl+shift+T added on android.

chrome/browser/sessions/chrome_tab_restore_service_client.cc

Index: chrome/browser/sessions/chrome_tab_restore_service_client.cc
diff --git a/chrome/browser/sessions/chrome_tab_restore_service_client.cc b/chrome/browser/sessions/chrome_tab_restore_service_client.cc
index 01f69fd75597917f2a663c0e5c3f4863b7ac067f..391761178e74dc706ab1f20e0a2ab63ecc27bf83 100644
--- a/chrome/browser/sessions/chrome_tab_restore_service_client.cc
+++ b/chrome/browser/sessions/chrome_tab_restore_service_client.cc
@@ -23,6 +23,8 @@
 
 #if !defined(OS_ANDROID)
 #include "chrome/browser/ui/browser_live_tab_context.h"
+#else
+#include "chrome/browser/ui/android/tab_model/android_live_tab_context.h"
 #endif
 
 namespace {
@@ -51,8 +53,9 @@ ChromeTabRestoreServiceClient::~ChromeTabRestoreServiceClient() {}
 sessions::LiveTabContext* ChromeTabRestoreServiceClient::CreateLiveTabContext(
     const std::string& app_name) {
 #if defined(OS_ANDROID)
-  // Android does not support LiveTabContext, as tab persistence
-  // is implemented on the Java side.
+  // Android does not initialize LiveTabContext here, and tab persistence is
+  // implemented in java.
+  NOTREACHED();
   return nullptr;

[Theresa, 2016/07/02 01:00:37]

This needs to be implemented to use TabRestoreService::RestoreMostRecentEntry:

return AndroidLiveTabContext::FindContextWithID(desired_id);

 #else
   return BrowserLiveTabContext::Create(profile_, app_name);
@@ -63,9 +66,8 @@ sessions::LiveTabContext*
 ChromeTabRestoreServiceClient::FindLiveTabContextForTab(
     const sessions::LiveTab* tab) {
 #if defined(OS_ANDROID)
-  // Android does not support LiveTabContext, as tab persistence
-  // is implemented on the Java side.
-  return nullptr;
+  return AndroidLiveTabContext::FindContextForWebContents(
+      static_cast<const sessions::ContentLiveTab*>(tab)->web_contents());
 #else
   return BrowserLiveTabContext::FindContextForWebContents(
       static_cast<const sessions::ContentLiveTab*>(tab)->web_contents());