components: Create web_modal component.

chrome/browser/extensions/api/media_galleries/media_galleries_api.cc

Index: chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
diff --git a/chrome/browser/extensions/api/media_galleries/media_galleries_api.cc b/chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
index 34c045a365a300d8119e264b0c6f1fb555724c95..e1770fc4dc26c67aad4693bd85b642cb34cc2dee 100644
--- a/chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
+++ b/chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
@@ -21,13 +21,13 @@
 #include "chrome/browser/media_galleries/media_galleries_dialog_controller.h"
 #include "chrome/browser/ui/chrome_select_file_policy.h"
 #include "chrome/browser/ui/extensions/shell_window.h"
-#include "chrome/browser/ui/web_contents_modal_dialog_manager.h"
-#include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/api/experimental_media_galleries.h"
 #include "chrome/common/extensions/api/media_galleries.h"
+#include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/permissions/api_permission.h"
 #include "chrome/common/extensions/permissions/media_galleries_permission.h"
 #include "chrome/common/pref_names.h"
+#include "components/web_modal/web_contents_modal_dialog_manager.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
@@ -42,6 +42,7 @@ using chrome::MediaFileSystemRegistry;
 using chrome::MediaFileSystemsCallback;
 using content::ChildProcessSecurityPolicy;
 using content::WebContents;
+using web_modal::WebContentsModalDialogManager;
 
 namespace MediaGalleries = extensions::api::media_galleries;
 namespace GetMediaFileSystems = MediaGalleries::GetMediaFileSystems;