Cleanup: Remove unused variables in chrome/ found by Scythe.

chrome/browser/service_process/service_process_control.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/service_process/service_process_control.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 96 matching lines @@
   if (CheckServiceProcessReady()) {
     ConnectInternal();
     return;
   }
 
   UMA_HISTOGRAM_ENUMERATION("CloudPrint.ServiceEvents", SERVICE_EVENT_LAUNCH,
                             SERVICE_EVENT_MAX);
 
   scoped_ptr<base::CommandLine> cmd_line(CreateServiceProcessCommandLine());
   // And then start the process asynchronously.
-  launcher_ = new Launcher(this, cmd_line.Pass());
+  launcher_ = new Launcher(cmd_line.Pass());
   launcher_->Run(base::Bind(&ServiceProcessControl::OnProcessLaunched,
                             base::Unretained(this)));
 }
 
 void ServiceProcessControl::Disconnect() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   channel_.reset();
 }
 
 void ServiceProcessControl::OnProcessLaunched() {
@@ skipping 183 matching lines @@
   channel_.reset();
   return ret;
 }
 
 // static
 ServiceProcessControl* ServiceProcessControl::GetInstance() {
   return Singleton<ServiceProcessControl>::get();
 }
 
 ServiceProcessControl::Launcher::Launcher(
-    ServiceProcessControl* process,
     scoped_ptr<base::CommandLine> cmd_line)
-    : process_control_(process),
-      cmd_line_(cmd_line.Pass()),
+    : cmd_line_(cmd_line.Pass()),
       launched_(false),
       retry_count_(0) {
 }
 
 // Execute the command line to start the process asynchronously.
 // After the command is executed, |task| is called with the process handle on
 // the UI thread.
 void ServiceProcessControl::Launcher::Run(const base::Closure& task) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   notify_task_ = task;
@@ skipping 46 matching lines @@
   if (process_.IsValid()) {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&Launcher::DoDetectLaunched, this));
   } else {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE, base::Bind(&Launcher::Notify, this));
   }
 }
 #endif  // !OS_MACOSX