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

chrome/browser/guestview/webview/plugin_permission_helper.cc

Index: chrome/browser/guestview/webview/plugin_permission_helper.cc
diff --git a/chrome/browser/guestview/webview/plugin_permission_helper.cc b/chrome/browser/guestview/webview/plugin_permission_helper.cc
index d223dbdcdf140318ee2d345685e5c5ec3f0a6fd9..004452353d8e8d84c69fb56ca3724297f32b55a8 100644
--- a/chrome/browser/guestview/webview/plugin_permission_helper.cc
+++ b/chrome/browser/guestview/webview/plugin_permission_helper.cc
@@ -108,8 +108,4 @@ void PluginPermissionHelper::OnPermissionResponse(const std::string& identifier,
     host->Send(new ChromeViewMsg_LoadBlockedPlugins(
         host->GetRoutingID(), identifier));
   }
-
-  content::RecordAction(
-      allow ? content::UserMetricsAction("WebView.Guest.PluginLoadAllowed") :
-              content::UserMetricsAction("WebView.Guest.PluginLoadDenied"));
 }