External autofill delegates.

chrome/browser/autocomplete_history_manager.h

Index: chrome/browser/autocomplete_history_manager.h
diff --git a/chrome/browser/autocomplete_history_manager.h b/chrome/browser/autocomplete_history_manager.h
index 4f8b8f3c7b35fb7de92d8201e45fc99e63c33686..f3923d249e231fb04856d923582fbc70dffb50e5 100644
--- a/chrome/browser/autocomplete_history_manager.h
+++ b/chrome/browser/autocomplete_history_manager.h
@@ -8,6 +8,7 @@
 
 #include <vector>
 
+#include "base/gtest_prod_util.h"
 #include "chrome/browser/prefs/pref_member.h"
 #include "chrome/browser/webdata/web_data_service.h"
 #include "content/browser/tab_contents/tab_contents_observer.h"
@@ -16,6 +17,7 @@ namespace webkit_glue {
 struct FormData;
 }  // namespace webkit_glue
 
+class AutofillExternalDelegate;
 class Profile;
 class TabContents;
 
@@ -46,9 +48,16 @@ class AutocompleteHistoryManager : public TabContentsObserver,
       const std::vector<int>& autofill_unique_ids);
   void OnFormSubmitted(const webkit_glue::FormData& form);
 
+  // Sets our external delegate.
+  void SetExternalDelegate(AutofillExternalDelegate* delegate) {
+    external_delegate_ = delegate;
+  }
+
  protected:
   friend class AutocompleteHistoryManagerTest;
   friend class AutofillManagerTest;
+  FRIEND_TEST_ALL_PREFIXES(AutocompleteHistoryManagerTest, ExternalDelegate);
+  FRIEND_TEST_ALL_PREFIXES(AutofillManagerTest, TestTabContents);
 
   // For tests.
   AutocompleteHistoryManager(TabContents* tab_contents,
@@ -58,6 +67,11 @@ class AutocompleteHistoryManager : public TabContentsObserver,
   void SendSuggestions(const std::vector<string16>* suggestions);
   void CancelPendingQuery();
 
+  // Exposed for testing.
+  AutofillExternalDelegate* external_delegate() {
+    return external_delegate_;
+  }
+
  private:
   void OnRemoveAutocompleteEntry(const string16& name, const string16& value);
 
@@ -76,6 +90,10 @@ class AutocompleteHistoryManager : public TabContentsObserver,
   std::vector<string16> autofill_icons_;
   std::vector<int> autofill_unique_ids_;
 
+  // Delegate to perform external processing (display, selection) on
+  // our behalf.  Weak.
+  AutofillExternalDelegate* external_delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(AutocompleteHistoryManager);
 };