Remove unnecessary log code in web_content_impl_browsertest.cc. It seems not to needed.

content/browser/web_contents/web_contents_impl_browsertest.cc

Index: content/browser/web_contents/web_contents_impl_browsertest.cc
diff --git a/content/browser/web_contents/web_contents_impl_browsertest.cc b/content/browser/web_contents/web_contents_impl_browsertest.cc
index 18bae1bb0c5752a85190d1946df02cf5652a6686..b414ccdd3dc2a878b070fd57ee7cbc66a6c401f1 100644
--- a/content/browser/web_contents/web_contents_impl_browsertest.cc
+++ b/content/browser/web_contents/web_contents_impl_browsertest.cc
@@ -362,7 +362,6 @@ class RenderFrameCreatedObserver : public WebContentsObserver {
   }
 
   virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) OVERRIDE {
-    LOG(ERROR) << "RFCreated: " << render_frame_host;
     last_rfh_ = render_frame_host;
   }
 
@@ -438,3 +437,4 @@ IN_PROC_BROWSER_TEST_F(WebContentsImplBrowserTest,
 }
 
 }  // namespace content
+