Manual fixups in remoting/ for scoped_refptr operator T* removal.

BUG=110610

Review URL: https://codereview.chromium.org/511313002

Cr-Commit-Position: refs/heads/master@{#292467}

remoting/client/client_context.cc

@@ -6,7 +6,8 @@
 
 namespace remoting {
 
-ClientContext::ClientContext(base::SingleThreadTaskRunner* main_task_runner)
+ClientContext::ClientContext(
+    const scoped_refptr<base::SingleThreadTaskRunner>& main_task_runner)
     : main_task_runner_(main_task_runner),
       decode_thread_("ChromotingClientDecodeThread"),
       audio_decode_thread_("ChromotingClientAudioDecodeThread") {

remoting/client/client_context.h

@@ -21,7 +21,8 @@ class ClientContext {
  public:
   // |main_task_runner| is the task runner for the main plugin thread
   // that is used for all PPAPI calls, e.g. network and graphics.
-  ClientContext(base::SingleThreadTaskRunner* main_task_runner);
+  ClientContext(
+      const scoped_refptr<base::SingleThreadTaskRunner>& main_task_runner);
   virtual ~ClientContext();
 
   void Start();