Refactor notifications of chrome/browser/webdata

chrome/browser/webdata/autofill_change.h

Index: chrome/browser/webdata/autofill_change.h
diff --git a/chrome/browser/webdata/autofill_change.h b/chrome/browser/webdata/autofill_change.h
index fdea9c1330e3bfe0215e237a12bc00eab3762724..ee6e3d404d6cc2889133b86210718c909a65f94b 100644
--- a/chrome/browser/webdata/autofill_change.h
+++ b/chrome/browser/webdata/autofill_change.h
@@ -5,6 +5,8 @@
 #ifndef CHROME_BROWSER_WEBDATA_AUTOFILL_CHANGE_H__
 #define CHROME_BROWSER_WEBDATA_AUTOFILL_CHANGE_H__
 
+#include <vector>
+
 #include "chrome/browser/webdata/autofill_entry.h"
 
 class AutofillProfile;
@@ -44,6 +46,8 @@ class AutofillChange : public GenericAutofillChange<AutofillKey> {
   }
 };
 
+typedef std::vector<AutofillChange> AutofillChangeList;
+
 // Change notification details for Autofill profile changes.
 class AutofillProfileChange : public GenericAutofillChange<std::string> {
  public: