Reload Local NTP on default search provider change.

chrome/browser/search/local_ntp_source.h

Index: chrome/browser/search/local_ntp_source.h
diff --git a/chrome/browser/search/local_ntp_source.h b/chrome/browser/search/local_ntp_source.h
index efa20504f196449fcc1fc81e398f98b4ea1f7ef3..410a2d1452a34c04179383ab23ffa63a9c429397 100644
--- a/chrome/browser/search/local_ntp_source.h
+++ b/chrome/browser/search/local_ntp_source.h
@@ -9,11 +9,13 @@
 #include "base/compiler_specific.h"
 #include "content/public/browser/url_data_source.h"
 
+class Profile;
+
 // Serves HTML and resources for the local new tab page i.e.
 // chrome-search://local-ntp/local-ntp.html
 class LocalNtpSource : public content::URLDataSource {
  public:
-  LocalNtpSource();
+  explicit LocalNtpSource(Profile* profile);
 
  private:
   virtual ~LocalNtpSource();
@@ -30,6 +32,8 @@ class LocalNtpSource : public content::URLDataSource {
       const net::URLRequest* request) const OVERRIDE;
   virtual std::string GetContentSecurityPolicyFrameSrc() const OVERRIDE;
 
+  Profile* profile_;
+
   DISALLOW_COPY_AND_ASSIGN(LocalNtpSource);
 };