Hook up LocalNtpSource to OneGoogleBarService

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 1d2b6526c4c5e5bf0bbd3581cecd2a45d405415d..cc4be714650997d71c99a674c2362dac06d606f3 100644
--- a/chrome/browser/search/local_ntp_source.h
+++ b/chrome/browser/search/local_ntp_source.h
@@ -6,17 +6,24 @@
 #define CHROME_BROWSER_SEARCH_LOCAL_NTP_SOURCE_H_
 
 #include <memory>
+#include <string>
+#include <vector>
 
-#include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "base/optional.h"
+#include "base/scoped_observer.h"
+#include "chrome/browser/search/one_google_bar/one_google_bar_service_observer.h"
 #include "content/public/browser/url_data_source.h"
 
+struct OneGoogleBarData;
+class OneGoogleBarService;
 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 {
+class LocalNtpSource : public content::URLDataSource,
+                       public OneGoogleBarServiceObserver {
  public:
   explicit LocalNtpSource(Profile* profile);
 
@@ -37,11 +44,26 @@ class LocalNtpSource : public content::URLDataSource {
   std::string GetContentSecurityPolicyScriptSrc() const override;
   std::string GetContentSecurityPolicyChildSrc() const override;
 
+  // Overridden from OneGoogleBarServiceObserver:
+  void OnOneGoogleBarDataChanged() override;
+  void OnOneGoogleBarFetchFailed() override;
+  void OnOneGoogleBarServiceShuttingDown() override;
+
+  void ServeOneGoogleBar(const OneGoogleBarData& data);
+  void ServeNullOneGoogleBar();
+
   void DefaultSearchProviderIsGoogleChanged(bool is_google);
 
   void SetDefaultSearchProviderIsGoogleOnIOThread(bool is_google);
 
-  Profile* profile_;
+  Profile* const profile_;
+
+  OneGoogleBarService* one_google_bar_service_;
+
+  ScopedObserver<OneGoogleBarService, OneGoogleBarServiceObserver>
+      one_google_bar_service_observer_;
+
+  std::vector<content::URLDataSource::GotDataCallback> one_google_callbacks_;
 
   std::unique_ptr<GoogleSearchProviderTracker> google_tracker_;
   bool default_search_provider_is_google_;