Send Chrome's process id to the app shim.

chrome/common/mac/app_mode_common.h

 // 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.
 
 #ifndef CHROME_COMMON_MAC_APP_MODE_COMMON_H_
 #define CHROME_COMMON_MAC_APP_MODE_COMMON_H_
 
 #import <Foundation/Foundation.h>
 
 #include "base/files/file_path.h"
@@ skipping 11 matching lines @@
 const AEEventClass kAEChromeAppClass = 'cApp';
 const AEEventID kAEChromeAppPing = 'ping';
 
 // The IPC socket used to communicate between app shims and Chrome will be
 // created under the user data directory with this name.
 extern const char kAppShimSocketName[];
 
 // Special app mode id used for the App Launcher.
 extern const char kAppListModeId[];
 
-// Instructs the app shim to send LaunchApp with launch_now = false. This
-// associates the shim without launching the app.
-extern const char kNoLaunchApp[];
+// The process ID of the Chrome process that launched the app shim.
+// The presence of this switch instructs the app shim to send LaunchApp with
+// launch_now = false. This associates the shim without launching the app.
+extern const char kLaunchedByChromeProcessId[];
 
 // The display name of the bundle as shown in Finder and the Dock. For localized
 // bundles, this overrides the bundle's file name.
 extern NSString* const kCFBundleDisplayNameKey;
 
 // The key specifying whether the display name should be localized. This makes
 // Finder look in localization folders in the app bundle for a display name.
 // (e.g. Content/Resources/en.lproj/)
 extern NSString* const kLSHasLocalizedDisplayNameKey;
 
@@ skipping 77 matching lines @@
   // Path to the app's user data directory.
   base::FilePath user_data_dir;
 
   // Directory of the profile associated with the app.
   base::FilePath profile_dir;
 };
 
 }  // namespace app_mode
 
 #endif  // CHROME_COMMON_MAC_APP_MODE_COMMON_H_