Refactor notifications of chrome/browser/webdata

chrome/browser/api/webdata/autofill_web_data_service.h

Index: chrome/browser/api/webdata/autofill_web_data_service.h
diff --git a/chrome/browser/api/webdata/autofill_web_data_service.h b/chrome/browser/api/webdata/autofill_web_data_service.h
index ee39ad72d3fd63234983ec00ba6fafa7cbcbe5db..f7f65f44246f0bd5f2cba1bcc6c1ea23d065f75c 100644
--- a/chrome/browser/api/webdata/autofill_web_data_service.h
+++ b/chrome/browser/api/webdata/autofill_web_data_service.h
@@ -7,14 +7,15 @@
 
 #include "chrome/browser/api/webdata/autofill_web_data.h"
 
+#include "chrome/browser/webdata/web_data_service_observer.h"
+
 namespace content {
 class BrowserContext;
 }
 
 // API for Autofill web data.
-class AutofillWebDataService
-    : public AutofillWebData,
-      public WebDataServiceBase {
+class AutofillWebDataService : public AutofillWebData,
+                               public WebDataServiceBase {
  public:
   // Retrieve an AutofillWebDataService for the given context.
   //
@@ -22,6 +23,9 @@ class AutofillWebDataService
   static scoped_ptr<AutofillWebDataService> FromBrowserContext(
       content::BrowserContext* context);
 
+  virtual void AddObserver(WebDataServiceObserver* observer) = 0;
+  virtual void RemoveObserver(WebDataServiceObserver* observer) = 0;
+
   virtual ~AutofillWebDataService() {}
 };