Enhance chrome.app.window API with title property

extensions/browser/app_window/app_window.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/app_window/app_window.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 282 matching lines @@
 
   // Windows cannot be always-on-top in fullscreen mode for security reasons.
   cached_always_on_top_ = new_params.always_on_top;
   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
     new_params.always_on_top = false;
 
   requested_alpha_enabled_ = new_params.alpha_enabled;
   is_ime_window_ = params.is_ime_window;
   show_in_shelf_ = params.show_in_shelf;
   window_icon_url_ = params.window_icon_url;
+  title_ = params.title;
 
   AppWindowClient* app_window_client = AppWindowClient::Get();
   native_app_window_.reset(
       app_window_client->CreateNativeAppWindow(this, &new_params));
 
   helper_.reset(new AppWebContentsHelper(
       browser_context_, extension_id_, web_contents(), app_delegate_.get()));
 
   UpdateExtensionAppIcon();
   // Download showInShelf=true window icon.
@@ skipping 261 matching lines @@
   if (!extension)
     return base::string16();
 
   // WebContents::GetTitle() will return the page's URL if there's no <title>
   // specified. However, we'd prefer to show the name of the extension in that
   // case, so we directly inspect the NavigationEntry's title.
   base::string16 title;
   content::NavigationEntry* entry = web_contents() ?
       web_contents()->GetController().GetLastCommittedEntry() : nullptr;
   if (!entry || entry->GetTitle().empty()) {
-    title = base::UTF8ToUTF16(extension->name());
+    if (!title_.empty()) {
+      title = base::UTF8ToUTF16(title_);
+    } else {
+      title = base::UTF8ToUTF16(extension->name());
+    }
   } else {
     title = web_contents()->GetTitle();
   }
   base::RemoveChars(title, base::ASCIIToUTF16("\n"), &title);
   return title;
 }
 
 void AppWindow::SetAppIconUrl(const GURL& url) {
   // Avoid using any previous icons that were being downloaded.
   image_loader_ptr_factory_.InvalidateWeakPtrs();
@@ skipping 560 matching lines @@
         region.bounds.x(),
         region.bounds.y(),
         region.bounds.right(),
         region.bounds.bottom(),
         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
   }
   return sk_region;
 }
 
 }  // namespace extensions