Revert of Add WebWidgetTestProxy.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 63b271f4d196f5efd55884d141b06785e99bad3a..e3382c9f10bb524229de2f33378552e331dbe04a 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -213,9 +213,6 @@
   return widget;
 }
 
-content::RenderWidget::CreateRenderWidgetFunction g_create_render_widget =
-    nullptr;
-
 }  // namespace
 
 namespace content {
@@ -291,13 +288,6 @@
 }
 
 // static
-void RenderWidget::InstallCreateHook(
-    CreateRenderWidgetFunction create_render_widget) {
-  CHECK(!g_create_render_widget);
-  g_create_render_widget = create_render_widget;
-}
-
-// static
 RenderWidget* RenderWidget::Create(int32_t opener_id,
                                    CompositorDependencies* compositor_deps,
                                    blink::WebPopupType popup_type,
@@ -329,11 +319,8 @@
     return view->GetWidget();
   }
   scoped_refptr<RenderWidget> widget(
-      g_create_render_widget
-          ? g_create_render_widget(compositor_deps, blink::WebPopupTypeNone,
-                                   screen_info, false, hidden, false)
-          : new RenderWidget(compositor_deps, blink::WebPopupTypeNone,
-                             screen_info, false, hidden, false));
+      new RenderWidget(compositor_deps, blink::WebPopupTypeNone, screen_info,
+                       false, hidden, false));
   widget->SetRoutingID(routing_id);
   widget->for_oopif_ = true;
   // DoInit increments the reference count on |widget|, keeping it alive after