Move the web dialogs code to src/ui/web_dialogs from src/chrome

chrome/browser/ui/webui/certificate_viewer_webui.cc

Index: chrome/browser/ui/webui/certificate_viewer_webui.cc
diff --git a/chrome/browser/ui/webui/certificate_viewer_webui.cc b/chrome/browser/ui/webui/certificate_viewer_webui.cc
index 65583303167252347a6ca2a478158156391f27fb..f9742016d7214bad2dfe7cb19f900378f742fbc1 100644
--- a/chrome/browser/ui/webui/certificate_viewer_webui.cc
+++ b/chrome/browser/ui/webui/certificate_viewer_webui.cc
@@ -17,16 +17,18 @@
 #include "chrome/browser/ui/certificate_dialogs.h"
 #include "chrome/browser/ui/constrained_window.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
-#include "chrome/browser/ui/webui/constrained_web_dialog_ui.h"
-#include "chrome/browser/ui/webui/web_dialog_observer.h"
 #include "chrome/common/net/x509_certificate_model.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/web_contents.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
+#include "ui/web_dialogs/constrained_web_dialog_ui.h"
+#include "ui/web_dialogs/web_dialog_observer.h"
 
 using content::WebContents;
 using content::WebUIMessageHandler;
+using ui::ConstrainedWebDialogUI;
+using ui::WebDialogObserver;
 
 namespace {