Reload Instant NTP and Instant-process tabs on search url change

chrome/browser/search/instant_service_observer.h

Index: chrome/browser/search/instant_service_observer.h
diff --git a/chrome/browser/search/instant_service_observer.h b/chrome/browser/search/instant_service_observer.h
index c282c937e3ca0b3b475a3f4e4df9c61897419bf1..7d990bcb076a6bcf1887de8a249b2daa655015c2 100644
--- a/chrome/browser/search/instant_service_observer.h
+++ b/chrome/browser/search/instant_service_observer.h
@@ -14,11 +14,17 @@ struct ThemeBackgroundInfo;
 class InstantServiceObserver {
  public:
   // Indicates that the user's custom theme has changed in some way.
-  virtual void ThemeInfoChanged(const ThemeBackgroundInfo&) = 0;
+  virtual void ThemeInfoChanged(const ThemeBackgroundInfo&);
 
   // Indicates that the most visited items has changed.
   virtual void MostVisitedItemsChanged(
-      const std::vector<InstantMostVisitedItem>&) = 0;
+      const std::vector<InstantMostVisitedItem>&);
+
+  // Indicates that the search provider setting was changed.
+  virtual void DefaultSearchProviderChanged();
+
+  // Indicates that the Google URL has changed as a result of searchdomaincheck.
+  virtual void GoogleURLUpdated();
 
  protected:
   virtual ~InstantServiceObserver() {}