Add --use-more-webui runtime flag to toggle WebUI replacements for native dialogs.

chrome/browser/ui/views/hung_renderer_view.cc

Index: chrome/browser/ui/views/hung_renderer_view.cc
diff --git a/chrome/browser/ui/views/hung_renderer_view.cc b/chrome/browser/ui/views/hung_renderer_view.cc
index 0a5528763b27af4e4d8f18593808557359d7765e..2fa8c6abc6c6e539c39758904a11a7b5193d124e 100644
--- a/chrome/browser/ui/views/hung_renderer_view.cc
+++ b/chrome/browser/ui/views/hung_renderer_view.cc
@@ -473,7 +473,7 @@ static HungRendererDialogView* CreateHungRendererDialogView() {
 
 namespace browser {
 
-void ShowHungRendererDialog(TabContents* contents) {
+void ShowNativeHungRendererDialog(TabContents* contents) {
   if (!logging::DialogsAreSuppressed()) {
     if (!g_instance)
       g_instance = CreateHungRendererDialogView();
@@ -481,7 +481,7 @@ void ShowHungRendererDialog(TabContents* contents) {
   }
 }
 
-void HideHungRendererDialog(TabContents* contents) {
+void HideNativeHungRendererDialog(TabContents* contents) {
   if (!logging::DialogsAreSuppressed() && g_instance)
     g_instance->EndForTabContents(contents);
 }