Hide experimental app list Google logo and custom launcher page when search engine is not Google.

chrome/browser/ui/app_list/start_page_service.cc

Index: chrome/browser/ui/app_list/start_page_service.cc
diff --git a/chrome/browser/ui/app_list/start_page_service.cc b/chrome/browser/ui/app_list/start_page_service.cc
index c65a3e03a34990a4c1c607e69e34715d0100894b..b92895c50aaa648a3b9ed0acb9db42b9165a837d 100644
--- a/chrome/browser/ui/app_list/start_page_service.cc
+++ b/chrome/browser/ui/app_list/start_page_service.cc
@@ -19,6 +19,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/hotword_service.h"
 #include "chrome/browser/search/hotword_service_factory.h"
+#include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/search_engines/ui_thread_search_terms_data.h"
 #include "chrome/browser/ui/app_list/speech_auth_helper.h"
 #include "chrome/browser/ui/app_list/speech_recognizer.h"
@@ -30,6 +31,8 @@
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
+#include "components/search_engines/template_url_prepopulate_data.h"
+#include "components/search_engines/template_url_service.h"
 #include "components/ui/zoom/zoom_controller.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
@@ -268,6 +271,7 @@ StartPageService::StartPageService(Profile* profile)
       speech_auth_helper_(new SpeechAuthHelper(profile, &clock_)),
       network_available_(true),
       microphone_available_(true),
+      search_engine_is_google_(true),

[Matt Giuca, 2015/02/17 08:07:45]

nit: Maybe init this to false? (Doesn't really matter since it is definitely
assigned later, so you may as well say false because that's the default bool
value.)

[calamity, 2015/02/18 01:42:34]

Done.

       weak_factory_(this) {
   // If experimental hotwording is enabled, then we're always "ready".
   // Transitioning into the "hotword recognizing" state is handled by the
@@ -279,10 +283,20 @@ StartPageService::StartPageService(Profile* profile)
   if (app_list::switches::IsExperimentalAppListEnabled())
     LoadContents();
 
+  TemplateURLService* template_url_service =
+      TemplateURLServiceFactory::GetForProfile(profile_);
+  const TemplateURL* default_provider =
+      template_url_service->GetDefaultSearchProvider();
+  search_engine_is_google_ =
+      TemplateURLPrepopulateData::GetEngineType(
+          *default_provider, template_url_service->search_terms_data()) ==
+      SEARCH_ENGINE_GOOGLE;
+
   network_change_observer_.reset(new NetworkChangeObserver(this));
 }
 
-StartPageService::~StartPageService() {}
+StartPageService::~StartPageService() {
+}
 
 void StartPageService::AddObserver(StartPageObserver* observer) {
   observers_.AddObserver(observer);
@@ -559,6 +573,9 @@ void StartPageService::UnloadContents() {
 }
 
 void StartPageService::FetchDoodleJson() {
+  if (!search_engine_is_google_)
+    return;
+
   GURL::Replacements replacements;
   replacements.SetPathStr(kDoodleJsonPath);