Pass ID of the calling extension to the native messaging host.

chrome/browser/extensions/api/messaging/native_process_launcher.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/extensions/api/messaging/native_process_launcher.h"
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
@@ skipping 142 matching lines @@
     // Not an allowed origin.
     content::BrowserThread::PostTask(
         content::BrowserThread::IO, FROM_HERE,
         base::Bind(&NativeProcessLauncherImpl::Core::CallCallbackOnIOThread,
                    this, callback, false,
                    base::kInvalidPlatformFileValue,
                    base::kInvalidPlatformFileValue));
     return;
   }
 
+  CommandLine command_line(manifest->path());
+  command_line.AppendArg(origin.spec());
+
   base::PlatformFile read_file;
   base::PlatformFile write_file;
   bool result = NativeProcessLauncher::LaunchNativeProcess(
-      manifest->path(), &read_file, &write_file);
+      command_line, &read_file, &write_file);
 
   content::BrowserThread::PostTask(
       content::BrowserThread::IO, FROM_HERE,
       base::Bind(&NativeProcessLauncherImpl::Core::CallCallbackOnIOThread,
                  this, callback, result, read_file, write_file));
 }
 
 void NativeProcessLauncherImpl::Core::CallCallbackOnIOThread(
     LaunchedCallback callback,
     bool result,
@@ skipping 26 matching lines @@
 }
 
 }  // namespace
 
 // static
 scoped_ptr<NativeProcessLauncher> NativeProcessLauncher::CreateDefault() {
   return scoped_ptr<NativeProcessLauncher>(new NativeProcessLauncherImpl());
 }
 
 }  // namespace extensions