Record metrics for permission prompt acceptance vs. user gesture.

chrome/browser/ui/website_settings/permission_bubble_request.h

Index: chrome/browser/ui/website_settings/permission_bubble_request.h
diff --git a/chrome/browser/ui/website_settings/permission_bubble_request.h b/chrome/browser/ui/website_settings/permission_bubble_request.h
index 05fb88b37b2d088c818a79a6386324070d880951..71512c5b5b9f8b66171b78691e82ea682647fb3c 100644
--- a/chrome/browser/ui/website_settings/permission_bubble_request.h
+++ b/chrome/browser/ui/website_settings/permission_bubble_request.h
@@ -37,6 +37,17 @@ enum class PermissionBubbleType {
   NUM
 };
 
+// Used for UMA to record whether a gesture was associated with the bubble. For
+// simplicity not all bubble types track whether a gesture is associated with it
+// or not, for these types of bubbles metrics are not recorded.
+enum class PermissionBubbleGestureType {
+  UNKNOWN,
+  GESTURE,
+  NO_GESTURE,
+  // NUM must be the last value in the enum.
+  NUM
+};
+
 // Describes the interface a feature utilizing permission bubbles should
 // implement. A class of this type is registered with the permission bubble
 // manager to receive updates about the result of the permissions request
@@ -85,6 +96,11 @@ class PermissionBubbleRequest {
 
   // Used to record UMA metrics for bubbles.
   virtual PermissionBubbleType GetPermissionBubbleType() const;
+
+  // Used to record UMA for whether bubbles are associated with a user gesture.
+  // To keep things simple this metric is only recorded for the most popular
+  // bubble types.
+  virtual PermissionBubbleGestureType GetGestureType() const;
 };
 
 #endif  // CHROME_BROWSER_UI_WEBSITE_SETTINGS_PERMISSION_BUBBLE_REQUEST_H_