Prettify Mac names, rewrite getDisplayPath API call to focus on $HOME

base/base_paths_mac.mm

 // 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 "base/base_paths_mac.h"
 
 #include <dlfcn.h>
 #import <Foundation/Foundation.h>
 #include <mach-o/dyld.h>
 
@@ skipping 41 matching lines @@
 bool PathProviderMac(int key, FilePath* result) {
   switch (key) {
     case base::FILE_EXE:
       GetNSExecutablePath(result);
       return true;
     case base::FILE_MODULE:
       return GetModulePathForAddress(result,
           reinterpret_cast<const void*>(&base::PathProviderMac));
     case base::DIR_CACHE:
       return base::mac::GetUserDirectory(NSCachesDirectory, result);
+    case base::DIR_DESKTOP:
+      return base::mac::GetUserDirectory(NSDesktopDirectory, result);
+    case base::DIR_DOCUMENTS:
+      return base::mac::GetUserDirectory(NSDocumentDirectory, result);
+    case base::DIR_DOWNLOADS:
+      return base::mac::GetUserDirectory(NSDownloadsDirectory, result);
     case base::DIR_APP_DATA: {
       bool success = base::mac::GetUserDirectory(NSApplicationSupportDirectory,
                                                  result);
 #if defined(OS_IOS)
       // On IOS, this directory does not exist unless it is created explicitly.
       if (success && !file_util::PathExists(*result))
         success = file_util::CreateDirectory(*result);
 #endif  // defined(OS_IOS)
       return success;
     }
@@ skipping 22 matching lines @@
     case base::DIR_HOME: {
       *result = base::mac::NSStringToFilePath(NSHomeDirectory());
       return true;
     }
     default:
       return false;
   }
 }
 
 }  // namespace base