Record metrics for permission prompt acceptance vs. user gesture.

chrome/browser/permissions/permission_request.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_PERMISSIONS_PERMISSION_REQUEST_H_
 #define CHROME_BROWSER_PERMISSIONS_PERMISSION_REQUEST_H_
 
 #include "base/strings/string16.h"
 #include "content/public/browser/permission_type.h"
 #include "url/gurl.h"
@@ skipping 19 matching lines @@
   REGISTER_PROTOCOL_HANDLER,
   PERMISSION_GEOLOCATION,
   PERMISSION_MIDI_SYSEX,
   PERMISSION_NOTIFICATIONS,
   PERMISSION_PROTECTED_MEDIA_IDENTIFIER,
   PERMISSION_PUSH_MESSAGING,
   // NUM must be the last value in the enum.
   NUM
 };
 
+// Used for UMA to record whether a gesture was associated with the request. For
+// simplicity not all request types track whether a gesture is associated with
+// it or not, for these types of requests metrics are not recorded.
+enum class PermissionRequestGestureType {
+  UNKNOWN,
+  GESTURE,
+  NO_GESTURE,
+  // NUM must be the last value in the enum.
+  NUM
+};
+
 // Describes the interface a feature making permission requests should
 // implement. A class of this type is registered with the permission request
 // manager to receive updates about the result of the permissions request
 // from the bubble or infobar. It should live until it is unregistered or until
 // RequestFinished is called.
 // Note that no particular guarantees are made about what exact UI surface
 // is presented to the user. The delegate may be coalesced with other bubble
 // requests, or depending on the situation, not shown at all.
 class PermissionRequest {
  public:
@@ skipping 28 matching lines @@
   virtual void Cancelled() = 0;
 
   // The UI this request was associated with was answered by the user.
   // It is safe for the request to be deleted at this point -- it will receive
   // no further message from the permission request system. This method will
   // eventually be called on every request which is not unregistered.
   virtual void RequestFinished() = 0;
 
   // Used to record UMA metrics for permission requests.
   virtual PermissionRequestType GetPermissionRequestType() const;
+
+  // Used to record UMA for whether requests are associated with a user gesture.
+  // To keep things simple this metric is only recorded for the most popular
+  // request types.
+  virtual PermissionRequestGestureType GetGestureType() const;
 };
 
 #endif  // CHROME_BROWSER_PERMISSIONS_PERMISSION_REQUEST_H_