Move all callers of GetHomeDir() to PathService::Get(base::DIR_HOME).

chrome/test/data/extensions/api_test/file_system/open_directory/test.js

Index: chrome/test/data/extensions/api_test/file_system/open_directory/test.js
diff --git a/chrome/test/data/extensions/api_test/file_system/open_directory/test.js b/chrome/test/data/extensions/api_test/file_system/open_directory/test.js
index db4a01e5b2eac5a3ebcf0492952ac6a8559e9608..3b60cd08f000bee8e29be598770c169e92d7bad8 100644
--- a/chrome/test/data/extensions/api_test/file_system/open_directory/test.js
+++ b/chrome/test/data/extensions/api_test/file_system/open_directory/test.js
@@ -21,9 +21,17 @@ chrome.test.runTests([
         chrome.test.callbackPass(function(directoryEntry) {
       var reader = directoryEntry.createReader();
       reader.readEntries(chrome.test.callback(function(entries) {
-        chrome.test.assertEq(entries.length, 1);
-        var entry = entries[0];
-        checkEntry(entry, 'open_existing.txt', false, false);
+        // On POSIX systems DIR_HOME is overridden for this test and
+        // [.config] directory may be created there, ignore it
+        // See https://codereview.chromium.org/200473002/
+        var testEntry;
+        entries.forEach(function(entry) {
+          if (entry.name != '.config') {
+            chrome.test.assertEq(entry.name, 'open_existing.txt');
+            testEntry = entry;
+          }
+        });
+        checkEntry(testEntry, 'open_existing.txt', false, false);
       }));
     }));
   },