Enhance chrome.app.window API with title property

chrome/browser/ui/ash/launcher/app_window_launcher_item_controller.cc

Index: chrome/browser/ui/ash/launcher/app_window_launcher_item_controller.cc
diff --git a/chrome/browser/ui/ash/launcher/app_window_launcher_item_controller.cc b/chrome/browser/ui/ash/launcher/app_window_launcher_item_controller.cc
index 80c2927fccbef89f605e30ddb91b78afd31c62d0..30838c77442b58cb8b8b062752503cf9adeef205 100644
--- a/chrome/browser/ui/ash/launcher/app_window_launcher_item_controller.cc
+++ b/chrome/browser/ui/ash/launcher/app_window_launcher_item_controller.cc
@@ -7,6 +7,7 @@
 #include <algorithm>
 
 #include "ash/wm/window_util.h"
+#include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller_util.h"
 #include "chrome/browser/ui/ash/launcher/launcher_controller_helper.h"
@@ -19,8 +20,9 @@ AppWindowLauncherItemController::AppWindowLauncherItemController(
     Type type,
     const std::string& app_id,
     const std::string& launch_id,
+    const std::string& title,
     ChromeLauncherController* controller)
-    : LauncherItemController(type, app_id, launch_id, controller),
+    : LauncherItemController(type, app_id, launch_id, title, controller),
       observed_windows_(this) {}
 
 AppWindowLauncherItemController::~AppWindowLauncherItemController() {}
@@ -134,8 +136,11 @@ AppWindowLauncherItemController::ItemSelected(const ui::Event& event) {
 }
 
 base::string16 AppWindowLauncherItemController::GetTitle() {
-  return LauncherControllerHelper::GetAppTitle(launcher_controller()->profile(),
-                                               app_id());
+  if (!title().empty())
+    return base::UTF8ToUTF16(title());
+  else
+    return LauncherControllerHelper::GetAppTitle(
+        launcher_controller()->profile(), app_id());
 }
 
 bool AppWindowLauncherItemController::IsDraggable() {