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 c75c46a5245cd20d1d1b9b73c34ae83e5f4a4e72..d740d519f40506958f4618664a73045bd365839d 100644
--- a/chrome/browser/ui/gtk/extensions/native_app_window_gtk.h
+++ b/chrome/browser/ui/gtk/extensions/native_app_window_gtk.h
@@ -70,12 +70,12 @@ class NativeAppWindowGtk : public NativeAppWindow,
   virtual void RenderViewHostChanged() OVERRIDE;
   virtual gfx::Insets GetFrameInsets() const OVERRIDE;
 
-  // WebContentsModalDialogHost implementation.
+  // web_modal::WebContentsModalDialogHost implementation.
   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();
@@ -152,7 +152,7 @@ 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);
 };