When passing a user gesture along with a message, include the timestamp of the user gesture to prev…

extensions/common/api/messaging/message.h

Index: extensions/common/api/messaging/message.h
diff --git a/extensions/common/api/messaging/message.h b/extensions/common/api/messaging/message.h
index 64ecb82a9e96a52c8c3d99a383058e43028f8cca..07818f101bafa799d673d81f1bf292029b707b6f 100644
--- a/extensions/common/api/messaging/message.h
+++ b/extensions/common/api/messaging/message.h
@@ -11,10 +11,15 @@ namespace extensions {
 struct Message {
   std::string data;
   bool user_gesture;
+  double user_gesture_timestamp;
 
-  Message() : data(), user_gesture(false) {}
-  Message(const std::string& data, bool user_gesture)
-      : data(data), user_gesture(user_gesture) {}
+  Message() : data() {}
+  Message(const std::string& data,
+          bool user_gesture,
+          double user_gesture_timestamp)
+      : data(data),
+        user_gesture(user_gesture),
+        user_gesture_timestamp(user_gesture_timestamp) {}
 };
 
 }  // namespace extensions