Get a minimal unit_tests target building and running for iOS

chrome/common/chrome_paths_internal.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_CHROME_PATHS_INTERNAL_H_
 #define CHROME_COMMON_CHROME_PATHS_INTERNAL_H_
 
 #include <string>
 
 #include "build/build_config.h"
@@ skipping 47 matching lines @@
 
 // Gets the path to the user's music directory.
 bool GetUserMusicDirectory(FilePath* result);
 
 // Gets the path to the user's pictures directory.
 bool GetUserPicturesDirectory(FilePath* result);
 
 // Gets the path to the user's videos directory.
 bool GetUserVideosDirectory(FilePath* result);
 
-#if defined(OS_MACOSX)
+#if defined(OS_MACOSX) && !defined(OS_IOS)
 // The "versioned directory" is a directory in the browser .app bundle.  It
 // contains the bulk of the application, except for the things that the system
 // requires be located at spepcific locations.  The versioned directory is
 // in the .app at Contents/Versions/w.x.y.z.
 FilePath GetVersionedDirectory();
 
 // This overrides the directory returned by |GetVersionedDirectory()|, to be
 // used when |GetVersionedDirectory()| can't automatically determine the proper
 // location. This is the case when the browser didn't load itself but by, e.g.,
 // the app mode loader. This should be called before |ChromeMain()|. This takes
@@ skipping 10 matching lines @@
 // Get the local library directory.
 bool GetLocalLibraryDirectory(FilePath* result);
 
 // Get the global Application Support directory (under /Library/).
 bool GetGlobalApplicationSupportDirectory(FilePath* result);
 
 // Returns the NSBundle for the outer browser application, even when running
 // inside the helper. In unbundled applications, such as tests, returns nil.
 NSBundle* OuterAppBundle();
 
-#endif  // OS_MACOSX
+#endif  // OS_MACOSX && !OS_IOS
 
 // Checks if the |process_type| has the rights to access the profile.
 bool ProcessNeedsProfileDir(const std::string& process_type);
 
 }  // namespace chrome
 
 #endif  // CHROME_COMMON_CHROME_PATHS_INTERNAL_H_