components: Create web_modal component.

components/web_modal/native_web_contents_modal_dialog.h

Index: components/web_modal/native_web_contents_modal_dialog.h
diff --git a/chrome/browser/ui/native_web_contents_modal_dialog.h b/components/web_modal/native_web_contents_modal_dialog.h
similarity index 65%
rename from chrome/browser/ui/native_web_contents_modal_dialog.h
rename to components/web_modal/native_web_contents_modal_dialog.h
index 3fb6445609022ba7c6de828edc44de6a745d30cf..266e073ab9c0bfd6dcb57cdfce9071dd579458ac 100644
--- a/chrome/browser/ui/native_web_contents_modal_dialog.h
+++ b/components/web_modal/native_web_contents_modal_dialog.h
@@ -2,11 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_UI_NATIVE_WEB_CONTENTS_MODAL_DIALOG_H_
-#define CHROME_BROWSER_UI_NATIVE_WEB_CONTENTS_MODAL_DIALOG_H_
+#ifndef COMPONENTS_WEB_MODAL_NATIVE_WEB_CONTENTS_MODAL_DIALOG_H_
+#define COMPONENTS_WEB_MODAL_NATIVE_WEB_CONTENTS_MODAL_DIALOG_H_
 
 #include "ui/gfx/native_widget_types.h"
 
+namespace web_modal {
+
 #if defined(OS_MACOSX)
 // Use a void* since none of the gfx::Native* types are suitable for
 // representing the web contents modal dialog under Cocoa.
@@ -15,4 +17,6 @@ typedef void* NativeWebContentsModalDialog;
 typedef gfx::NativeView NativeWebContentsModalDialog;
 #endif
 
-#endif  // CHROME_BROWSER_UI_NATIVE_WEB_CONTENTS_MODAL_DIALOG_H_
+}  // namespace web_modal
+
+#endif  // COMPONENTS_WEB_MODAL_NATIVE_WEB_CONTENTS_MODAL_DIALOG_H_