Shrink space required by history log file

ui/file_manager/file_manager/common/js/importer_common_unittest.js

Index: ui/file_manager/file_manager/common/js/importer_common_unittest.js
diff --git a/ui/file_manager/file_manager/common/js/importer_common_unittest.js b/ui/file_manager/file_manager/common/js/importer_common_unittest.js
index 9018108d3f9554563bf1c2aa7f0bfd3f32d11084..ea0e7d6bf3c2bc3e91fc9766f7a844119e856b6b 100644
--- a/ui/file_manager/file_manager/common/js/importer_common_unittest.js
+++ b/ui/file_manager/file_manager/common/js/importer_common_unittest.js
@@ -223,6 +223,21 @@ function testRotateLogs_RemembersInitialActiveLog(callback) {
   reportPromise(promise, callback);
 }
 
+function testDeflateAppUrl() {
+  var url = 'filesystem:chrome-extension://hhaomjibdihmijegdhdafkllkbggdgoj' +
+      '/external/removable/USB%20Drive/DCIM/derekkind2.jpg';
+  var deflated = importer.deflateAppUrl(url);
+
+  // Just verify that the string starts with our secret sauce marker...
+  assertTrue(deflated.substring(0, 1) === '$');

[mtomasz, 2015/02/25 00:40:17]

nit: assertEquals can be used for better logging.

[Steve McKay, 2015/02/25 01:51:56]

Done.

+
+  // And that it is shorter than the original...
+  assertTrue(deflated.length < url.length);
+
+  // And finally that we can reconstitute the original.
+  assertEquals(importer.inflateAppUrl(deflated), url);

[mtomasz, 2015/02/25 00:40:17]

nit: Opposite order of arguments. Should be assertEquals(expected, actual)

[Steve McKay, 2015/02/25 01:51:56]

Done.

+};
+
 /** @param {string} path */
 function assertIsMediaDir(path) {
   var dir = createDirectoryEntry(sdVolume, path);