components: Create web_modal component.

chrome/browser/ui/gtk/extensions/native_app_window_gtk.h

Index: chrome/browser/ui/gtk/extensions/native_app_window_gtk.h
diff --git a/chrome/browser/ui/gtk/extensions/native_app_window_gtk.h b/chrome/browser/ui/gtk/extensions/native_app_window_gtk.h
index 16df2bf9d22ec89e672db6ab226c3dbb77e43cd7..5e4113ec23a02cc3af936f4edd61aa8d05243324 100644
--- a/chrome/browser/ui/gtk/extensions/native_app_window_gtk.h
+++ b/chrome/browser/ui/gtk/extensions/native_app_window_gtk.h
@@ -70,13 +70,13 @@ class NativeAppWindowGtk : public NativeAppWindow,
   virtual void RenderViewHostChanged() OVERRIDE;
   virtual gfx::Insets GetFrameInsets() const OVERRIDE;
 
-  // WebContentsModalDialogHost implementation.
+  // web_modal::WebContentsModalDialogHost implementation.
   virtual gfx::NativeView GetHostView() const OVERRIDE;
   virtual gfx::Point GetDialogPosition(const gfx::Size& size) OVERRIDE;
   virtual void AddObserver(
-      WebContentsModalDialogHostObserver* observer) OVERRIDE;
+      web_modal::WebContentsModalDialogHostObserver* observer) OVERRIDE;
   virtual void RemoveObserver(
-      WebContentsModalDialogHostObserver* observer) OVERRIDE;
+      web_modal::WebContentsModalDialogHostObserver* observer) OVERRIDE;
 
   content::WebContents* web_contents() const {
     return shell_window_->web_contents();
@@ -153,7 +153,7 @@ class NativeAppWindowGtk : public NativeAppWindow,
 
   // Observers to be notified when any web contents modal dialog requires
   // updating its dimensions.
-  ObserverList<WebContentsModalDialogHostObserver> observer_list_;
+  ObserverList<web_modal::WebContentsModalDialogHostObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeAppWindowGtk);
 };