Add ability for Widgets to override the DefaultThemeProvider

chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc

Index: chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc
diff --git a/chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc b/chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc
index b2c8d9443454123b70d159e98a47b36c31dc16ae..3e79b272302604e66bd9ec8e1534ce5f8b7840ea 100644
--- a/chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc
+++ b/chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc
@@ -6,8 +6,11 @@
 
 #include <algorithm>
 
+#include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/search/search.h"
 #include "chrome/browser/themes/theme_properties.h"
+#include "chrome/browser/themes/theme_service.h"
+#include "chrome/browser/themes/theme_service_factory.h"
 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
 #include "chrome/browser/ui/views/omnibox/omnibox_result_view.h"
 #include "components/omnibox/browser/omnibox_view.h"
@@ -230,6 +233,8 @@ void OmniboxPopupContentsView::UpdatePopupAppearance() {
     params.parent = popup_parent->GetNativeView();
     params.bounds = GetPopupBounds();
     params.context = popup_parent->GetNativeWindow();
+    params.theme_provider = ThemeServiceFactory::GetForProfile(
+        ProfileManager::GetActiveUserProfile());

[oshima, 2015/09/02 18:44:12]

ditto

     popup_->Init(params);
     // Third-party software such as DigitalPersona identity verification can
     // hook the underlying window creation methods and use SendMessage to