Extract WebViewClient implementation out of WebTestProxyBase.

content/shell/renderer/layout_test/layout_test_content_renderer_client.cc

Index: content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
diff --git a/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc b/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
index 489339fd7130f600e3da2232beba5c8fc12c6451..37bcec4b5a16dcc959e812b54c549a0cc3c8768f 100644
--- a/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
+++ b/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
@@ -56,6 +56,9 @@ void WebTestProxyCreated(RenderView* render_view,
     LayoutTestRenderProcessObserver::GetInstance()->SetTestDelegate(
         test_runner);
   }
+  proxy->set_view_test_client(LayoutTestRenderProcessObserver::GetInstance()
+                                  ->test_interfaces()
+                                  ->CreateWebViewTestClient(proxy));
   proxy->SetInterfaces(
       LayoutTestRenderProcessObserver::GetInstance()->test_interfaces());
   test_runner->proxy()->SetDelegate(
@@ -66,7 +69,7 @@ void WebFrameTestProxyCreated(RenderFrame* render_frame,
                               test_runner::WebFrameTestProxyBase* proxy) {
   proxy->set_test_client(LayoutTestRenderProcessObserver::GetInstance()
                              ->test_interfaces()
-                             ->GetWebFrameTestClient());
+                             ->CreateWebFrameTestClient());
 }
 
 }  // namespace
@@ -93,6 +96,10 @@ void LayoutTestContentRendererClient::RenderViewCreated(
     RenderView* render_view) {
   new ShellRenderViewObserver(render_view);
 
+  test_runner::WebTestProxyBase* proxy = GetWebTestProxyBase(render_view);
+  proxy->set_web_widget(render_view->GetWebView());
+  proxy->set_web_view(render_view->GetWebView());
+
   BlinkTestRunner* test_runner = BlinkTestRunner::Get(render_view);
   test_runner->Reset(false /* for_new_test */);
   render_view->GetWebView()->setSpellCheckClient(