MD History: increase contrast in synced tab promo flourish plant

chrome/browser/ui/webui/md_history_ui.cc

 // Copyright 2015 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/md_history_ui.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/values.h"
@@ skipping 125 matching lines @@
   bool group_by_domain = base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kHistoryEnableGroupByDomain) || profile->IsSupervised();
   source->AddBoolean("groupByDomain", group_by_domain);
 
   source->AddBoolean("isGuestSession", profile->IsGuestSession());
 
   source->AddBoolean(kIsUserSignedInKey, IsUserSignedIn(profile));
 
   source->AddResourcePath("constants.html", IDR_MD_HISTORY_CONSTANTS_HTML);
   source->AddResourcePath("constants.js", IDR_MD_HISTORY_CONSTANTS_JS);
-  source->AddResourcePath("images/100/sign_in_promo.png",
-                          IDR_MD_HISTORY_IMAGES_100_SIGN_IN_PROMO_PNG);
-  source->AddResourcePath("images/200/sign_in_promo.png",
-                          IDR_MD_HISTORY_IMAGES_200_SIGN_IN_PROMO_PNG);
+  source->AddResourcePath("images/100/sign_in_promo.jpg",
+                          IDR_MD_HISTORY_IMAGES_100_SIGN_IN_PROMO_JPG);
+  source->AddResourcePath("images/200/sign_in_promo.jpg",
+                          IDR_MD_HISTORY_IMAGES_200_SIGN_IN_PROMO_JPG);
   source->AddResourcePath("history.js", IDR_MD_HISTORY_HISTORY_JS);
 
 #if BUILDFLAG(USE_VULCANIZE)
   source->AddResourcePath("app.html",
                           IDR_MD_HISTORY_APP_VULCANIZED_HTML);
   source->AddResourcePath("app.crisper.js",
                           IDR_MD_HISTORY_APP_CRISPER_JS);
   source->AddResourcePath("lazy_load.html",
                           IDR_MD_HISTORY_LAZY_LOAD_VULCANIZED_HTML);
   source->AddResourcePath("lazy_load.crisper.js",
@@ skipping 115 matching lines @@
 
   content::WebUIDataSource::Update(profile, chrome::kChromeUIHistoryHost,
                                    std::move(update));
 }
 
 void MdHistoryUI::HandleMenuPromoShown(const base::ListValue* args) {
   Profile::FromWebUI(web_ui())->GetPrefs()->SetBoolean(
       prefs::kMdHistoryMenuPromoShown, true);
   UpdateDataSource();
 }