Change SigninClient::CreateGaiaAuthFetcher return type to unique_ptr

chrome/browser/signin/chrome_signin_client.cc

Index: chrome/browser/signin/chrome_signin_client.cc
diff --git a/chrome/browser/signin/chrome_signin_client.cc b/chrome/browser/signin/chrome_signin_client.cc
index 3a30291d3fc6b45f83b40b55995f67af4c22ff94..4a8c6d472c6779eb1bffe59d25b82f563a3cf512 100644
--- a/chrome/browser/signin/chrome_signin_client.cc
+++ b/chrome/browser/signin/chrome_signin_client.cc
@@ -9,6 +9,7 @@
 
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
@@ -385,11 +386,11 @@ void ChromeSigninClient::DelayNetworkCall(const base::Closure& callback) {
 #endif
 }
 
-GaiaAuthFetcher* ChromeSigninClient::CreateGaiaAuthFetcher(
+std::unique_ptr<GaiaAuthFetcher> ChromeSigninClient::CreateGaiaAuthFetcher(
     GaiaAuthConsumer* consumer,
     const std::string& source,
     net::URLRequestContextGetter* getter) {
-  return new GaiaAuthFetcher(consumer, source, getter);
+  return base::MakeUnique<GaiaAuthFetcher>(consumer, source, getter);
 }
 
 void ChromeSigninClient::MaybeFetchSigninTokenHandle() {