Coverity: Fix a few pass-by-values.

ppapi/native_client/src/trusted/plugin/service_runtime.cc

Index: ppapi/native_client/src/trusted/plugin/service_runtime.cc
diff --git a/ppapi/native_client/src/trusted/plugin/service_runtime.cc b/ppapi/native_client/src/trusted/plugin/service_runtime.cc
index f396a38ada0a90fbc3570c071fa6a0f88d69cef3..5d3ff8873922fc4d2fa4fb0e69a56c0d1070a136 100644
--- a/ppapi/native_client/src/trusted/plugin/service_runtime.cc
+++ b/ppapi/native_client/src/trusted/plugin/service_runtime.cc
@@ -466,9 +466,8 @@ void PluginReverseInterface::QuotaRequest_MainThreadResponse(
   // request automatically deleted
 }
 
-int64_t PluginReverseInterface::RequestQuotaForWrite(nacl::string file_id,
-                                                     int64_t offset,
-                                                     int64_t bytes_to_write) {
+int64_t PluginReverseInterface::RequestQuotaForWrite(
+    nacl::string file_id, int64_t offset, int64_t bytes_to_write) {
   NaClLog(4,
           "PluginReverseInterface::RequestQuotaForWrite:"
           " (file_id='%s', offset=%"NACL_PRId64", bytes_to_write=%"