components: Create web_modal component.

chrome/browser/ui/extensions/native_app_window.h

Index: chrome/browser/ui/extensions/native_app_window.h
diff --git a/chrome/browser/ui/extensions/native_app_window.h b/chrome/browser/ui/extensions/native_app_window.h
index 447a9e026ce96b98f9a83fac3c9df93bf20a33ee..64d49c36fde52b668d2acae1e3dfec5fd754b6b4 100644
--- a/chrome/browser/ui/extensions/native_app_window.h
+++ b/chrome/browser/ui/extensions/native_app_window.h
@@ -7,13 +7,14 @@
 
 #include "chrome/browser/ui/base_window.h"
 #include "chrome/browser/ui/extensions/shell_window.h"
-#include "chrome/browser/ui/web_contents_modal_dialog_host.h"
+#include "components/web_modal/web_contents_modal_dialog_host.h"
 #include "ui/gfx/insets.h"
 
 // This is an interface to a native implementation of a shell window, used for
 // new-style packaged apps. Shell windows contain a web contents, but no tabs
 // or URL bar.
-class NativeAppWindow : public BaseWindow, public WebContentsModalDialogHost {
+class NativeAppWindow : public BaseWindow,
+                        public web_modal::WebContentsModalDialogHost {
  public:
   // Used by ShellWindow to instantiate the platform-specific ShellWindow code.
   static NativeAppWindow* Create(ShellWindow* window,