Call ShowRootWindow on NativeWindow's RootWindow to display the window.

content/shell/shell_aura.cc

 // Copyright (c) 2012 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 "content/shell/shell.h"
 
 #include "base/command_line.h"
 #include "base/utf_string_conversions.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/aura/env.h"
@@ skipping 320 matching lines @@
 }
 
 void Shell::PlatformSetIsLoading(bool loading) {
 }
 
 void Shell::PlatformCreateWindow(int width, int height) {
   window_widget_ =
       views::Widget::CreateWindowWithBounds(new ShellWindowDelegateView(this),
                gfx::Rect(0, 0, width, height));
   window_ = window_widget_->GetNativeWindow();
+  window_->GetRootWindow()->SetHostSize(gfx::Size(width, height));

[sky, 2013/01/08 01:20:05]

Why is this needed?

[Nayan, 2013/01/08 02:25:38]

By default, ShellStackingClientAsh creates root window of size (100, 100) in
content/shell/shell_stacking_client_ash.cc
ShellStackingClientAsh::GetDefaultParent function, resulting in root window of
dimension (100,100). Above call will set the root window size to WebView window
size.

[sky, 2013/01/08 18:28:15]

Shouldn't the size passed to CreateWindowWithBounds be used?

[Nayan, 2013/01/13 03:07:18]

Done.

+  window_->GetRootWindow()->ShowRootWindow();
   window_widget_->Show();
 }
 
 void Shell::PlatformSetContents() {
   ShellWindowDelegateView* delegate_view =
     static_cast<ShellWindowDelegateView*>(window_widget_->widget_delegate());
   delegate_view->SetWebContents(web_contents_.get());
 }
 
 void Shell::PlatformResizeSubViews() {
 }
 
 void Shell::Close() {
   window_widget_->Close();
 }
 
 void Shell::PlatformSetTitle(const string16& title) {
   ShellWindowDelegateView* delegate_view =
     static_cast<ShellWindowDelegateView*>(window_widget_->widget_delegate());
   delegate_view->SetWindowTitle(title);
   window_widget_->UpdateWindowTitle();
 }
 
 }  // namespace content