Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc

Index: chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc b/chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc
index 879c3733626f1308b6d3540a40fc93ec58774e3d..3254a6cdfae1f50778e670e27bbe6e02456d1681 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc
@@ -445,7 +445,7 @@ class SafeBrowsingServiceTest : public InProcessBrowserTest {
   // to wait for the SafeBrowsingService to finish loading/stopping.
   void WaitForIOThread() {
     scoped_refptr<base::ThreadTestHelper> io_helper(new base::ThreadTestHelper(
-        BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));
+        BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO).get()));
     ASSERT_TRUE(io_helper->Run());
   }