Implement Add and Update for PasswordStoreMac....

chrome/browser/password_manager/password_store_mac_unittest.cc

Index: chrome/browser/password_manager/password_store_mac_unittest.cc
===================================================================
--- chrome/browser/password_manager/password_store_mac_unittest.cc	(revision 19773)
+++ chrome/browser/password_manager/password_store_mac_unittest.cc	(working copy)
@@ -66,6 +66,7 @@
 
   virtual void TearDown() {
     ExpectCreatesAndFreesBalanced();
+    ExpectCreatorCodesSet();
     delete keychain_;
   }
 
@@ -79,6 +80,12 @@
     EXPECT_EQ(0, keychain_->UnfreedAttributeDataCount());
   }
 
+  // Causes a test failure unless any Keychain items added during the test have
+  // their creator code set.
+  void ExpectCreatorCodesSet() {
+    EXPECT_TRUE(keychain_->CreatorCodesSetForAddedItems());
+  }
+
   MockKeychain* keychain_;
 };