Vibration API : migrate to device/vibration using mojo.

device/vibration/vibration_manager.mojom

Index: device/vibration/vibration_manager.mojom
diff --git a/mojo/examples/wm_flow/app/embedder.mojom b/device/vibration/vibration_manager.mojom
similarity index 67%
copy from mojo/examples/wm_flow/app/embedder.mojom
copy to device/vibration/vibration_manager.mojom
index aae787052f7ace9ee64d330dcaf565b5c9822dcf..757fd8b0cda008755aacac500f375e2506a47762 100644
--- a/mojo/examples/wm_flow/app/embedder.mojom
+++ b/device/vibration/vibration_manager.mojom
@@ -2,10 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-module examples {
+module device {
 
-interface Embedder {
-  HelloWorld() => ();
+interface VibrationManager {
+  Vibrate(int64 millis);
+  Cancel();
 };
 
-}
+}