Files.app: Retrieve disk label name from mount path.

chrome/test/data/extensions/api_test/file_browser/mount_test/test.js

Index: chrome/test/data/extensions/api_test/file_browser/mount_test/test.js
diff --git a/chrome/test/data/extensions/api_test/file_browser/mount_test/test.js b/chrome/test/data/extensions/api_test/file_browser/mount_test/test.js
index a282e5265479815159072cb7b162357f4d142b00..e636b97727400d5638921e9f576c11d4f4dd722e 100644
--- a/chrome/test/data/extensions/api_test/file_browser/mount_test/test.js
+++ b/chrome/test/data/extensions/api_test/file_browser/mount_test/test.js
@@ -5,7 +5,7 @@
 // These have to be sync'd with file_browser_private_apitest.cc
 var expectedVolume1 = {
   volumeId: 'removable:mount_path1',
-  volumeLabel: 'drive_label1',
+  volumeLabel: 'mount_path1',
   sourcePath: 'device_path1',
   volumeType: 'removable',
   deviceType: 'usb',
@@ -17,7 +17,7 @@ var expectedVolume1 = {
 
 var expectedVolume2 = {
   volumeId: 'removable:mount_path2',
-  volumeLabel: 'drive_label2',
+  volumeLabel: 'mount_path2',
   sourcePath: 'device_path2',
   volumeType: 'removable',
   deviceType: 'mobile',
@@ -29,7 +29,7 @@ var expectedVolume2 = {
 
 var expectedVolume3 = {
   volumeId: 'removable:mount_path3',
-  volumeLabel: 'drive_label3',
+  volumeLabel: 'mount_path3',
   sourcePath: 'device_path3',
   volumeType: 'removable',
   deviceType: 'optical',
@@ -58,7 +58,7 @@ var expectedDriveVolume = {
 
 var expectedArchiveVolume = {
   volumeId: 'archive:archive_mount_path',
-  volumeLabel: '',
+  volumeLabel: 'archive_mount_path',
   sourcePath: /removable\/mount_path3\/archive.zip$/,
   volumeType: 'archive',
   isReadOnly: true,