Add UMA for <webview> APIs: a. ClearData, b. when Permission request is allowed.

chrome/browser/guestview/webview/webview_guest.h

Index: chrome/browser/guestview/webview/webview_guest.h
diff --git a/chrome/browser/guestview/webview/webview_guest.h b/chrome/browser/guestview/webview/webview_guest.h
index 386d0f6f03f4f4d3a876ba71fa2038db1de89b65..8354db7c057389d17dcebc50e939ea2efb34a21b 100644
--- a/chrome/browser/guestview/webview/webview_guest.h
+++ b/chrome/browser/guestview/webview/webview_guest.h
@@ -122,6 +122,20 @@ class WebViewGuest : public GuestView,
  private:
   virtual ~WebViewGuest();
 
+  // A map to store the callback for a request keyed by the request's id.
+  struct PermissionResponseInfo {
+    PermissionResponseCallback callback;
+    BrowserPluginPermissionType permission_type;
+    bool allowed_by_default;
+    PermissionResponseInfo();
+    PermissionResponseInfo(const PermissionResponseCallback& callback,
+                           BrowserPluginPermissionType permission_type,
+                           bool allowed_by_default);
+    ~PermissionResponseInfo();
+  };
+
+  static void RecordUserInitiatedUMA(const PermissionResponseInfo& info,
+                                     bool allow);
   // WebContentsObserver implementation.
   virtual void DidCommitProvisionalLoadForFrame(
       int64 frame_id,
@@ -175,15 +189,6 @@ class WebViewGuest : public GuestView,
   // We only need the ids to be unique for a given WebViewGuest.
   int next_permission_request_id_;
 
-  // A map to store the callback for a request keyed by the request's id.
-  struct PermissionResponseInfo {
-    PermissionResponseCallback callback;
-    bool allowed_by_default;
-    PermissionResponseInfo();
-    PermissionResponseInfo(const PermissionResponseCallback& callback,
-                           bool allowed_by_default);
-    ~PermissionResponseInfo();
-  };
   typedef std::map<int, PermissionResponseInfo> RequestMap;
   RequestMap pending_permission_requests_;