Coverity: Fix pass-by-value.

CID_COUNT=1
CID=103438
TEST=none
BUG=none
R=groby

Review URL: https://chromiumcodereview.appspot.com/9596001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@124880 0039d316-1c4b-4281-b951-d872f2087c98

chrome/common/net/gaia/oauth2_mint_token_fetcher.cc

@@ -137,7 +137,8 @@ void OAuth2MintTokenFetcher::OnMintTokenSuccess(
   consumer_->OnMintTokenSuccess(access_token);
 }
 
-void OAuth2MintTokenFetcher::OnMintTokenFailure(GoogleServiceAuthError error) {
+void OAuth2MintTokenFetcher::OnMintTokenFailure(
+    const GoogleServiceAuthError& error) {
   state_ = ERROR_STATE;
   consumer_->OnMintTokenFailure(error);
 }

chrome/common/net/gaia/oauth2_mint_token_fetcher.h

@@ -69,9 +69,9 @@ class OAuth2MintTokenFetcher : public content::URLFetcherDelegate {
   void StartMintToken();
   void EndMintToken(const content::URLFetcher* source);
 
-  // Helper mehtods for reporting back results.
+  // Helper methods for reporting back results.
   void OnMintTokenSuccess(const std::string& access_token);
-  void OnMintTokenFailure(GoogleServiceAuthError error);
+  void OnMintTokenFailure(const GoogleServiceAuthError& error);
 
   // Other helpers.
   static GURL MakeMintTokenUrl();