WIP for integration between Chrome and Google Web History.

chrome/browser/ui/webui/history_ui.h

Index: chrome/browser/ui/webui/history_ui.h
diff --git a/chrome/browser/ui/webui/history_ui.h b/chrome/browser/ui/webui/history_ui.h
index 5e1911b3c8f3f91c4ddd436c8baf7d17fe53c797..6412be53096626703890368cf1611292860fd459 100644
--- a/chrome/browser/ui/webui/history_ui.h
+++ b/chrome/browser/ui/webui/history_ui.h
@@ -11,6 +11,7 @@
 #include "base/string16.h"
 #include "chrome/browser/cancelable_request.h"
 #include "chrome/browser/history/history.h"
+#include "chrome/browser/history/web_history_service.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_ui_controller.h"
@@ -47,10 +48,17 @@ class BrowsingHistoryHandler : public content::WebUIMessageHandler,
                        const content::NotificationDetails& details) OVERRIDE;
 
  private:
+  // Helper used by handlers getHistory and searchHistory.
+  void QueryHistory(const string16& text_query,
+                    const history::QueryOptions& options);
+
   // Callback from the history system when the history list is available.
   void QueryComplete(HistoryService::Handle request_handle,
                      history::QueryResults* results);
 
+  // Callback from the WebHistory service with results from Web History.
+  void WebHistoryQueryComplete();
+
   // Callback from the history system when visits were deleted.
   void RemoveComplete();