Adding metrics on the usefulness of the Win10 version of the Welcome Page

chrome/browser/ui/webui/welcome_win10_ui.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/welcome_win10_ui.h"
 
 #include <string>
 
 #include "base/feature_list.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 71 matching lines @@
                                   IDS_WIN10_WELCOME_PIN_LABEL);
 }
 
 }  // namespace
 
 WelcomeWin10UI::WelcomeWin10UI(content::WebUI* web_ui, const GURL& url)
     : content::WebUIController(web_ui) {
   static const char kCssFilePath[] = "welcome.css";
   static const char kJsFilePath[] = "welcome.js";
 
-  web_ui->AddMessageHandler(new WelcomeWin10Handler());
-
-  content::WebUIDataSource* html_source =
-      content::WebUIDataSource::Create(url.host());
-
   // Determine which variation to show.
   bool is_first_run = !UrlContainsKeyValueInQuery(url, "text", "faster");
   bool is_inline_style = ShouldShowInlineStyleVariant(url);
 
+  web_ui->AddMessageHandler(new WelcomeWin10Handler(is_inline_style));
+
+  content::WebUIDataSource* html_source =
+      content::WebUIDataSource::Create(url.host());
+
   AddLocalizedStrings(html_source, is_first_run);
 
   if (is_inline_style) {
     html_source->AddResourcePath(kCssFilePath, IDR_WELCOME_WIN10_INLINE_CSS);
     html_source->AddResourcePath(kJsFilePath, IDR_WELCOME_WIN10_INLINE_JS);
     html_source->SetDefaultResource(IDR_WELCOME_WIN10_INLINE_HTML);
   } else {
     html_source->AddResourcePath(kCssFilePath, IDR_WELCOME_WIN10_SECTIONED_CSS);
     html_source->AddResourcePath(kJsFilePath, IDR_WELCOME_WIN10_SECTIONED_JS);
     html_source->SetDefaultResource(IDR_WELCOME_WIN10_SECTIONED_HTML);
   }
 
   // Logo images of all scales.
   html_source->AddResourcePath("logo-small.png", IDR_PRODUCT_LOGO_32);
   html_source->AddResourcePath("logo-small2x.png", IDR_PRODUCT_LOGO_64);
   html_source->AddResourcePath("logo-large.png", IDR_PRODUCT_LOGO_64);
   html_source->AddResourcePath("logo-large2x.png", IDR_PRODUCT_LOGO_128);
 
   content::WebUIDataSource::Add(Profile::FromWebUI(web_ui), html_source);
 }
 
 WelcomeWin10UI::~WelcomeWin10UI() = default;