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 de82e2450d33b2b74646edde0f16e0ef937ed86c..3b1d2bc384eee3a1bfa7459f61fa0ac271f3f7d8 100644
--- a/chrome/common/mac/app_mode_common.h
+++ b/chrome/common/mac/app_mode_common.h
@@ -127,6 +127,13 @@ struct ChromeAppModeInfo {
   base::FilePath profile_dir;
 };
 
+// IPC::kMaxSocketNameLength imposes a limit to the length of the path to a

[tapted, 2013/11/21 11:12:05]

nit: I'd probably start this with `Due to kernel API restraints..`

[jackhou1, 2013/11/22 00:20:40]

Done.

+// socket. The app shim socket is stored in the user's home directory, so in

[tapted, 2013/11/21 11:12:05]

nit: update comment (i.e. since there's no sockets in the home dir any more)

[jackhou1, 2013/11/22 00:20:40]

Done.

+// tests and for users with long usernames, the full socket path cannot be used.
+// GetShortSocketPath hashes the full path and returns a path under /tmp that
+// can be used to make a symlink to the full path.
+base::FilePath GetShortSocketPath(const base::FilePath& full_path);

[tapted, 2013/11/21 11:12:05]

maybe full_path -> user_data_dir?

[jackhou1, 2013/11/22 00:20:40]

Done.

+
 }  // namespace app_mode
 
 #endif  // CHROME_COMMON_MAC_APP_MODE_COMMON_H_