Put app shim IPC socket in a temporary directory. (Mac)

chrome/common/mac/app_mode_common.h

Index: chrome/common/mac/app_mode_common.h
diff --git a/chrome/common/mac/app_mode_common.h b/chrome/common/mac/app_mode_common.h
index a88ded6598f762040990af264ee83f18409c6509..dd1915c668b3bec1fc91e620c0103ad45e7ee0ae 100644
--- a/chrome/common/mac/app_mode_common.h
+++ b/chrome/common/mac/app_mode_common.h
@@ -23,8 +23,11 @@ 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[];
+// created under a temporary directory with this name.
+extern const char kAppShimSocketShortName[];
+// A symlink to allow the app shim to find the socket will be created under the
+// user data dir with this name.
+extern const char kAppShimSocketSymlinkName[];
 
 // Special app mode id used for the App Launcher.
 extern const char kAppListModeId[];
@@ -127,6 +130,10 @@ struct ChromeAppModeInfo {
   base::FilePath profile_dir;
 };
 
+// Check that the socket and its parent directory have the correct permissions
+// and are owned by the user.
+void VerifySocketPermissions(const base::FilePath& socket_path);
+
 }  // namespace app_mode
 
 #endif  // CHROME_COMMON_MAC_APP_MODE_COMMON_H_