6 files changed, 24 insertions, 13 deletions
diff --git a/base/base_paths.h b/base/base_paths.h
index ea62a8b..3875fb4 100644
--- a/base/base_paths.h
+++ b/base/base_paths.h
@@ -40,6 +40,7 @@ enum BasePathKey {
                 // browser cache can be a subdirectory.
                 // This is $XDG_CACHE_HOME on Linux and
                 // ~/Library/Caches on Mac.
+  DIR_HOME,     // $HOME on POSIX-like systems.
 #endif
 
   PATH_END
diff --git a/base/base_paths_mac.mm b/base/base_paths_mac.mm
index 56f3ecb..e46fd1e 100644
--- a/base/base_paths_mac.mm
+++ b/base/base_paths_mac.mm
@@ -83,6 +83,10 @@ bool PathProviderMac(int key, FilePath* result) {
 #endif
       return true;
     }
+    case base::DIR_HOME: {
+      *result = base::mac::NSStringToFilePath(NSHomeDirectory());
+      return true;
+    }
     default:
       return false;
   }
diff --git a/base/base_paths_posix.cc b/base/base_paths_posix.cc
index d8d5ae6..743f77a 100644
--- a/base/base_paths_posix.cc
+++ b/base/base_paths_posix.cc
@@ -85,12 +85,17 @@ bool PathProviderPosix(int key, FilePath* result) {
                   << "Try running from your chromium/src directory.";
       return false;
     }
-    case base::DIR_CACHE:
+    case base::DIR_CACHE: {
       scoped_ptr<base::Environment> env(base::Environment::Create());
       FilePath cache_dir(base::nix::GetXDGDirectory(env.get(), "XDG_CACHE_HOME",
                                                     ".cache"));
       *result = cache_dir;
       return true;
+    }
+    case base::DIR_HOME: {
+      *result = file_util::GetHomeDir();
+      return true;
+    }
   }
   return false;
 }
diff --git a/base/file_util_posix.cc b/base/file_util_posix.cc
index f198f44..0dc4f33 100644
--- a/base/file_util_posix.cc
+++ b/base/file_util_posix.cc
@@ -1085,7 +1085,7 @@ bool CopyFile(const FilePath& from_path, const FilePath& to_path) {
 
   return result;
 }
-#endif  // defined(OS_MACOSX)
+#endif  // !defined(OS_MACOSX)
 
 bool VerifyPathControlledByUser(const FilePath& base,
                                 const FilePath& path,
diff --git a/chrome/browser/extensions/api/file_system/file_system_api.cc b/chrome/browser/extensions/api/file_system/file_system_api.cc
index c3c7125..eb20c11 100644
--- a/chrome/browser/extensions/api/file_system/file_system_api.cc
+++ b/chrome/browser/extensions/api/file_system/file_system_api.cc
@@ -51,19 +51,14 @@ struct RewritePair {
 const RewritePair g_rewrite_pairs[] = {
 #if defined(OS_WIN)
   {base::DIR_PROFILE, "~"},
+#elif defined(OS_POSIX)
+  {base::DIR_HOME, "~"},
 #endif
 };
 
 FilePath PrettifyPath(const FilePath& file_path) {
-  // Note that when g_rewrite_pairs includes at least one value on all
-  // platforms, this code can be cleaned up.
-#if defined(OS_WIN)
-  size_t size = arraysize(g_rewrite_pairs);
-#else
-  size_t size = 0;
-#endif
-
-  for (size_t i = 0; i < size; ++i) {
+#if defined(OS_WIN) || defined(OS_POSIX)
+  for (size_t i = 0; i < arraysize(g_rewrite_pairs); ++i) {
     FilePath candidate_path;
     if (!PathService::Get(g_rewrite_pairs[i].path_key, &candidate_path))
       continue;  // We don't DCHECK this value, as Get will return false even
@@ -77,6 +72,7 @@ FilePath PrettifyPath(const FilePath& file_path) {
       return output;
     }
   }
+#endif
 
   return file_path;
 }
diff --git a/chrome/browser/extensions/api/file_system/file_system_apitest.cc b/chrome/browser/extensions/api/file_system/file_system_apitest.cc
index 4cdbe4f..0bc334d 100644
--- a/chrome/browser/extensions/api/file_system/file_system_apitest.cc
+++ b/chrome/browser/extensions/api/file_system/file_system_apitest.cc
@@ -48,9 +48,14 @@ IN_PROC_BROWSER_TEST_F(FileSystemApiTest, FileSystemApiGetDisplayPath) {
       << message_;
 }
 
-#if defined(OS_WIN)
+#if defined(OS_WIN) || defined(OS_POSIX)
 IN_PROC_BROWSER_TEST_F(FileSystemApiTest, FileSystemApiGetDisplayPathPrettify) {
-  ASSERT_TRUE(PathService::OverrideAndCreateIfNeeded(base::DIR_PROFILE,
+#if defined(OS_WIN)
+  int override = base::DIR_PROFILE;
+#elif defined(OS_POSIX)
+  int override = base::DIR_HOME;
+#endif
+  ASSERT_TRUE(PathService::OverrideAndCreateIfNeeded(override,
       test_root_folder_, false));
 
   FilePath test_file = test_root_folder_.AppendASCII("gold.txt");