Move CancelableTaskTracker to //base/task/CancelableTaskTracker.

chrome/browser/sessions/session_restore.cc

Index: chrome/browser/sessions/session_restore.cc
diff --git a/chrome/browser/sessions/session_restore.cc b/chrome/browser/sessions/session_restore.cc
index e6e4af4c1a899c35ef1c01cb8a65debcfc7e4d16..f44a89f8cfa46d721b628544054fcd24013d760a 100644
--- a/chrome/browser/sessions/session_restore.cc
+++ b/chrome/browser/sessions/session_restore.cc
@@ -19,6 +19,7 @@
 #include "base/platform_file.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
+#include "base/task/cancelable_task_tracker.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ -35,7 +36,6 @@
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/ntp/core_app_launcher_handler.h"
-#include "chrome/common/cancelable_task_tracker.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/dom_storage_context.h"
 #include "content/public/browser/navigation_controller.h"
@@ -1156,7 +1156,7 @@ class SessionRestoreImpl : public content::NotificationObserver {
   std::vector<GURL> urls_to_open_;
 
   // Used to get the session.
-  CancelableTaskTracker cancelable_task_tracker_;
+  base::CancelableTaskTracker cancelable_task_tracker_;
 
   // Responsible for loading the tabs.
   scoped_refptr<TabLoader> tab_loader_;