Log the creation of several more dialog box types.

chrome/browser/chromeos/external_protocol_dialog.cc

Index: chrome/browser/chromeos/external_protocol_dialog.cc
diff --git a/chrome/browser/chromeos/external_protocol_dialog.cc b/chrome/browser/chromeos/external_protocol_dialog.cc
index 16e4f43f62c30c169467b7d36f60897992a6d482..b38194d4b8d74238b5f19a50004863a5c9fb2edb 100644
--- a/chrome/browser/chromeos/external_protocol_dialog.cc
+++ b/chrome/browser/chromeos/external_protocol_dialog.cc
@@ -7,6 +7,7 @@
 #include "chrome/browser/chromeos/arc/intent_helper/arc_external_protocol_dialog.h"
 #include "chrome/browser/external_protocol/external_protocol_handler.h"
 #include "chrome/browser/tab_contents/tab_util.h"
+#include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/strings/grit/components_strings.h"
@@ -111,4 +112,6 @@ ExternalProtocolDialog::ExternalProtocolDialog(WebContents* web_contents,
     parent_window = NULL;
   }
   views::DialogDelegate::CreateDialogWidget(this, NULL, parent_window)->Show();
+  chrome::RecordDialogCreation(
+      chrome::DialogIdentifier::EXTERNAL_PROTOCOL_CHROMEOS);
 }