Update Linux to use scoped_refptr<T>::get() rather than implicit "operator T*"

content/browser/renderer_host/pepper/pepper_external_file_ref_backend.cc

Index: content/browser/renderer_host/pepper/pepper_external_file_ref_backend.cc
diff --git a/content/browser/renderer_host/pepper/pepper_external_file_ref_backend.cc b/content/browser/renderer_host/pepper/pepper_external_file_ref_backend.cc
index edae57ec7f962cbe95e1443754565b24d6c6ca67..877428e90b04a7082ad7d2acf9d00184a5939a15 100644
--- a/content/browser/renderer_host/pepper/pepper_external_file_ref_backend.cc
+++ b/content/browser/renderer_host/pepper/pepper_external_file_ref_backend.cc
@@ -43,11 +43,15 @@ int32_t PepperExternalFileRefBackend::Touch(
     PP_Time last_access_time,
     PP_Time last_modified_time) {
   IPC::Message reply_msg = PpapiPluginMsg_FileRef_TouchReply();
-  base::FileUtilProxy::Touch(task_runner_, path_,
+  base::FileUtilProxy::Touch(
+      task_runner_.get(),
+      path_,
       ppapi::PPTimeToTime(last_access_time),
       ppapi::PPTimeToTime(last_modified_time),
       base::Bind(&PepperExternalFileRefBackend::DidFinish,
-                 weak_factory_.GetWeakPtr(), reply_context, reply_msg));
+                 weak_factory_.GetWeakPtr(),
+                 reply_context,
+                 reply_msg));
   return PP_OK_COMPLETIONPENDING;
 }
 
@@ -66,9 +70,12 @@ int32_t PepperExternalFileRefBackend::Rename(
 
 int32_t PepperExternalFileRefBackend::Query(
     ppapi::host::ReplyMessageContext reply_context) {
-  bool ok = base::FileUtilProxy::GetFileInfo(task_runner_, path_,
+  bool ok = base::FileUtilProxy::GetFileInfo(
+      task_runner_.get(),
+      path_,
       base::Bind(&PepperExternalFileRefBackend::GetMetadataComplete,
-                 weak_factory_.GetWeakPtr(), reply_context));
+                 weak_factory_.GetWeakPtr(),
+                 reply_context));
   DCHECK(ok);
   return PP_OK_COMPLETIONPENDING;
 }