Extract and dispatch device uuid in media device attached notification message.

chrome/browser/chromeos/extensions/file_browser_private_apitest.cc

Index: chrome/browser/chromeos/extensions/file_browser_private_apitest.cc
diff --git a/chrome/browser/chromeos/extensions/file_browser_private_apitest.cc b/chrome/browser/chromeos/extensions/file_browser_private_apitest.cc
index 9237c5b491d91d70d664dafb7ebc24770bc9c6e6..303dbcd4b34a4624c0adf28a378bddded4aaaf33 100644
--- a/chrome/browser/chromeos/extensions/file_browser_private_apitest.cc
+++ b/chrome/browser/chromeos/extensions/file_browser_private_apitest.cc
@@ -28,6 +28,7 @@ struct TestDiskInfo {
   const char* file_path;
   const char* device_label;
   const char* drive_label;
+  const char* fs_uuid;
   const char* system_path_prefix;
   chromeos::DeviceType device_type;
   uint64 size_in_bytes;
@@ -54,6 +55,7 @@ TestDiskInfo kTestDisks[] = {
     "file_path1",
     "device_label1",
     "drive_label1",
+    "FFFF-FFFF",
     "system_path_prefix1",
     chromeos::DEVICE_TYPE_USB,
     1073741824,
@@ -68,6 +70,7 @@ TestDiskInfo kTestDisks[] = {
     "file_path2",
     "device_label2",
     "drive_label2",
+    "0FFF-FFFF",
     "system_path_prefix2",
     chromeos::DEVICE_TYPE_MOBILE,
     47723,
@@ -82,6 +85,7 @@ TestDiskInfo kTestDisks[] = {
     "file_path3",
     "device_label3",
     "drive_label3",
+    "00FF-FFFF",
     "system_path_prefix3",
     chromeos::DEVICE_TYPE_OPTICAL_DISC,
     0,
@@ -190,6 +194,7 @@ class ExtensionFileBrowserPrivateApiTest : public ExtensionApiTest {
                 kTestDisks[disk_info_index].file_path,
                 kTestDisks[disk_info_index].device_label,
                 kTestDisks[disk_info_index].drive_label,
+                kTestDisks[disk_info_index].fs_uuid,
                 kTestDisks[disk_info_index].system_path_prefix,
                 kTestDisks[disk_info_index].device_type,
                 kTestDisks[disk_info_index].size_in_bytes,