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

chrome/browser/guestview/webview/webview_guest.cc

Index: chrome/browser/guestview/webview/webview_guest.cc
diff --git a/chrome/browser/guestview/webview/webview_guest.cc b/chrome/browser/guestview/webview/webview_guest.cc
index ac7f926bb25caaf1126afe501db21fe2e313cee5..c058119ee3d0668f221e81547faf374d49694ba3 100644
--- a/chrome/browser/guestview/webview/webview_guest.cc
+++ b/chrome/browser/guestview/webview/webview_guest.cc
@@ -312,7 +312,7 @@ bool WebViewGuest::RequestPermission(
   // If there are too many pending permission requests then reject this request.
   if (pending_permission_requests_.size() >=
       webview::kMaxOutstandingPermissionRequests) {
-    callback.Run(false, std::string());
+    callback.Run(false, std::string(), false);
     return true;
   }
 
@@ -331,7 +331,7 @@ bool WebViewGuest::RequestPermission(
       chrome::VersionInfo::Channel channel = chrome::VersionInfo::GetChannel();
       if (channel > chrome::VersionInfo::CHANNEL_DEV) {
         // 'dialog' API is not available in stable/beta.
-        callback.Run(false, std::string());
+        callback.Run(false, std::string(), false);
         return true;
       }
       DispatchEvent(new GuestView::Event(webview::kEventDialog,
@@ -403,7 +403,7 @@ WebViewGuest::SetPermissionResult WebViewGuest::SetPermission(
   bool allow = (action == ALLOW) ||
       ((action == DEFAULT) && info.allowed_by_default);
 
-  info.callback.Run(allow, user_input);
+  info.callback.Run(allow, user_input, action != DEFAULT);
   pending_permission_requests_.erase(request_itr);
 
   return allow ? SET_PERMISSION_ALLOWED : SET_PERMISSION_DENIED;
@@ -434,6 +434,7 @@ void WebViewGuest::Terminate() {
 bool WebViewGuest::ClearData(const base::Time remove_since,
                              uint32 removal_mask,
                              const base::Closure& callback) {
+  content::RecordAction(content::UserMetricsAction("WebView.Guest.ClearData"));
   content::StoragePartition* partition =
       content::BrowserContext::GetStoragePartition(
           web_contents()->GetBrowserContext(),