Move CancelableTaskTracker to //base/task/CancelableTaskTracker.

chrome/browser/android/shortcut_helper.h

Index: chrome/browser/android/shortcut_helper.h
diff --git a/chrome/browser/android/shortcut_helper.h b/chrome/browser/android/shortcut_helper.h
index e9059ae45b825edc9b7a348745f0c737f13c07e6..ad0183dcd5e22dc91a60eed0a85d2cfad7cb18d0 100644
--- a/chrome/browser/android/shortcut_helper.h
+++ b/chrome/browser/android/shortcut_helper.h
@@ -8,8 +8,8 @@
 #include "base/android/jni_helper.h"
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
+#include "base/task/cancelable_task_tracker.h"
 #include "chrome/browser/android/tab_android.h"
-#include "chrome/common/cancelable_task_tracker.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace chrome {
@@ -66,7 +66,7 @@ class ShortcutBuilder : public content::WebContentsObserver {
   base::string16 title_;
   int launcher_large_icon_size_;
   ShortcutType shortcut_type_;
-  CancelableTaskTracker cancelable_task_tracker_;
+  base::CancelableTaskTracker cancelable_task_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(ShortcutBuilder);
 };