Remove navigator.vibrate without user gesture.

chrome/browser/flag_descriptions.h

Index: chrome/browser/flag_descriptions.h
diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index a09ecf68c7a5505303ecee59e7b52105068997e8..808e9921eaeed4eb01e5dd6ef93e0c42ef278a3c 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -504,6 +504,12 @@ extern const char kTouchSelectionStrategyCharacter[];
 // direction in which the handle is dragged.
 extern const char kTouchSelectionStrategyDirection[];
 
+// Name of the flag that requires a user gesture for vibrate.
+extern const char kVibrateRequiresUserGestureName[];
+
+// Description of the flag that requires a user gesture for vibrate.
+extern const char kVibrateRequiresUserGestureDescription[];
+
 // Title for the flag to use the Online Wallet sandbox servers (instead of
 // production).
 extern const char kWalletServiceUseSandboxName[];