Shortcut ctrl+shift+T added on android.

chrome/browser/android/recently_closed_tabs_bridge.cc

Index: chrome/browser/android/recently_closed_tabs_bridge.cc
diff --git a/chrome/browser/android/recently_closed_tabs_bridge.cc b/chrome/browser/android/recently_closed_tabs_bridge.cc
index 771c815e70b9b7e507f46b5ea43618d09bc9e015..b2482d68eb8536bb319157ac512f104ad60d0416 100644
--- a/chrome/browser/android/recently_closed_tabs_bridge.cc
+++ b/chrome/browser/android/recently_closed_tabs_bridge.cc
@@ -10,10 +10,15 @@
 #include "chrome/browser/profiles/profile_android.h"
 #include "chrome/browser/sessions/session_restore.h"
 #include "chrome/browser/sessions/tab_restore_service_factory.h"
+#include "chrome/browser/ui/android/tab_model/tab_model.h"
+#include "chrome/browser/ui/android/tab_model/tab_model_list.h"
+#include "components/sessions/content/content_serialized_navigation_builder.h"
 #include "components/sessions/core/tab_restore_service.h"
+#include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/web_contents.h"
 #include "jni/RecentlyClosedBridge_jni.h"
 
+

[Theresa, 2016/06/29 23:53:30]

nit: remove extra blank line

 using base::android::AttachCurrentThread;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::ConvertUTF8ToJavaString;
@@ -126,6 +131,64 @@ jboolean RecentlyClosedTabsBridge::OpenRecentlyClosedTab(
   return true;
 }
 
+// Open most recently closed tab, don't need parent tab.
+jboolean RecentlyClosedTabsBridge::OpenMostRecentlyClosedTab(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& obj) {
+  EnsureTabRestoreService();
+  if (!tab_restore_service_ || TabModelList::empty())
+    return false;
+
+  const sessions::TabRestoreService::Entries& entries =
+      tab_restore_service_->entries();
+  if (entries.empty())
+    return false;
+
+  // find the correct non-incognito tab model based on TabAndroid.window_id.
+  using RestoreTab = const sessions::TabRestoreService::Tab;

[Theresa, 2016/06/29 23:53:30]

put this using line up with the rest.

+  RestoreTab* restore_tab =
+      static_cast<RestoreTab*>(entries.front());
+  SessionID::id_type window_id = restore_tab->browser_id;
+  TabModel* tab_model = TabModelList::FindTabModelWithId(window_id);
+  // if no tab model, fall back to first non-incognito model.
+  if (!tab_model || tab_model->IsOffTheRecord()) {
+    for (auto it = TabModelList::begin(); it != TabModelList::end(); ++it) {
+      TabModel* model = *it;
+      if (!model->IsOffTheRecord()) {
+        tab_model = model;
+        break;
+      }
+    }
+  }
+
+  if (!tab_model)
+    return false;
+
+  // remove last tab restore record.
+  std::unique_ptr<sessions::TabRestoreService::Tab> tab_entry(
+        tab_restore_service_->RemoveTabEntryById(entries.front()->id));
+  if (!tab_entry)
+    return false;
+
+  // restore navigation history and prepare web content.
+  sessions::SessionTab session_tab;
+  session_tab.current_navigation_index = tab_entry->current_navigation_index;
+  session_tab.navigations = tab_entry->navigations;
+  std::vector<std::unique_ptr<content::NavigationEntry>> nav_entries =
+        sessions::ContentSerializedNavigationBuilder::ToNavigationEntries(
+            session_tab.navigations, profile_);
+  content::WebContents* web_contents = content::WebContents::Create(
+          content::WebContents::CreateParams(profile_));
+  web_contents->GetController().Restore(
+      session_tab.normalized_navigation_index(),
+      content::NavigationController::RESTORE_CURRENT_SESSION,
+      &nav_entries);
+
+  // create new tab.
+  tab_model->CreateTab(NULL, web_contents, -1);
+  return true;
+}
+
 void RecentlyClosedTabsBridge::ClearRecentlyClosedTabs(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj) {