Make async methods UpdateLock() and ResetLock() in MockScreenOrientationController.

content/renderer/screen_orientation/mock_screen_orientation_controller.h

Index: content/renderer/screen_orientation/mock_screen_orientation_controller.h
diff --git a/content/renderer/screen_orientation/mock_screen_orientation_controller.h b/content/renderer/screen_orientation/mock_screen_orientation_controller.h
index 330195c94be0fc358fdb93085e17277089f204f4..31420555fb247d24756883d2b6a915bf3bfe3080 100644
--- a/content/renderer/screen_orientation/mock_screen_orientation_controller.h
+++ b/content/renderer/screen_orientation/mock_screen_orientation_controller.h
@@ -5,7 +5,9 @@
 #ifndef CONTENT_RENDERER_SCREEN_ORIENTATION_MOCK_SCREEN_ORIENTATION_CONTROLLER_H_
 #define CONTENT_RENDERER_SCREEN_ORIENTATION_MOCK_SCREEN_ORIENTATION_CONTROLLER_H_
 
+#include "base/lazy_instance.h"
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "third_party/WebKit/public/platform/WebScreenOrientationLockType.h"
 #include "third_party/WebKit/public/platform/WebScreenOrientationType.h"
 
@@ -15,7 +17,8 @@ class WebScreenOrientationListener;
 
 namespace content {
 
-class MockScreenOrientationController {
+class MockScreenOrientationController
+    : public base::RefCountedThreadSafe<MockScreenOrientationController> {
  public:
   MockScreenOrientationController();
 
@@ -26,6 +29,10 @@ class MockScreenOrientationController {
   void UpdateDeviceOrientation(blink::WebScreenOrientationType);
 
  private:
+  virtual ~MockScreenOrientationController();
+
+  void UpdateLockSync(blink::WebScreenOrientationLockType);
+  void ResetLockSync();
   void UpdateScreenOrientation(blink::WebScreenOrientationType);
   bool IsOrientationAllowedByCurrentLock(blink::WebScreenOrientationType);
   blink::WebScreenOrientationType SuitableOrientationForCurrentLock();
@@ -36,6 +43,8 @@ class MockScreenOrientationController {
   blink::WebScreenOrientationListener* listener_;
 
   DISALLOW_COPY_AND_ASSIGN(MockScreenOrientationController);
+  friend class base::LazyInstance<MockScreenOrientationController>;
+  friend class base::RefCountedThreadSafe<MockScreenOrientationController>;
 };
 
 } // namespace content