Remove implicit conversions from scoped_refptr to T* in PasswordStoreMac test.

chrome/browser/password_manager/password_store_mac_unittest.cc

Index: chrome/browser/password_manager/password_store_mac_unittest.cc
diff --git a/chrome/browser/password_manager/password_store_mac_unittest.cc b/chrome/browser/password_manager/password_store_mac_unittest.cc
index 47f86a42c1291d3322cce137c4d1ffd042b03041..8d75a4b9c0a38fdedb528c9daaa742b2b5adc346 100644
--- a/chrome/browser/password_manager/password_store_mac_unittest.cc
+++ b/chrome/browser/password_manager/password_store_mac_unittest.cc
@@ -1070,7 +1070,7 @@ class PasswordStoreMacTest : public testing::Test {
 
   virtual void TearDown() {
     store_->Shutdown();
-    EXPECT_FALSE(store_->GetBackgroundTaskRunner());
+    EXPECT_FALSE(store_->GetBackgroundTaskRunner().get());
   }
 
   void WaitForStoreUpdate() {
@@ -1082,7 +1082,7 @@ class PasswordStoreMacTest : public testing::Test {
     base::MessageLoop::current()->Run();
   }
 
-  scoped_refptr<TestPasswordStoreMac> store() { return store_; }
+  TestPasswordStoreMac* store() { return store_.get(); }
 
   MockAppleKeychain* keychain() { return keychain_; }