Remove non-const version of GetDefaultSearchProvider() and make all callers call the const version

chrome/browser/android/locale/special_locale_handler.cc

Index: chrome/browser/android/locale/special_locale_handler.cc
diff --git a/chrome/browser/android/locale/special_locale_handler.cc b/chrome/browser/android/locale/special_locale_handler.cc
index e1f55b6440295cb26c724571fc97f20d5068a6e2..8f26c935db83ee9c134a1180d49ddafe79301176 100644
--- a/chrome/browser/android/locale/special_locale_handler.cc
+++ b/chrome/browser/android/locale/special_locale_handler.cc
@@ -100,7 +100,8 @@ void SpecialLocaleHandler::OverrideDefaultSearchProvider(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj) {
   // If the user has changed their default search provider, no-op.
-  TemplateURL* current_dsp = template_url_service_->GetDefaultSearchProvider();
+  const TemplateURL* current_dsp =
+      template_url_service_->GetDefaultSearchProvider();
   if (!current_dsp ||
       current_dsp->prepopulate_id() != TemplateURLPrepopulateData::google.id) {
     return;
@@ -117,7 +118,8 @@ void SpecialLocaleHandler::SetGoogleAsDefaultSearch(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj) {
   // If the user has changed their default search provider, no-op.
-  TemplateURL* current_dsp = template_url_service_->GetDefaultSearchProvider();
+  const TemplateURL* current_dsp =
+      template_url_service_->GetDefaultSearchProvider();
   if (!current_dsp ||
       current_dsp->prepopulate_id() != GetDesignatedSearchEngine()) {
     return;