Remove calls of PrerenderTracker::TryCancel and TryCancelOnIOThread in ChromeResourceDispatcherHost…

android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.cc

Index: android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.cc
===================================================================
--- android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.cc	(revision 243099)
+++ android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.cc	(working copy)
@@ -290,25 +290,6 @@
   }
 }
 
-bool AwResourceDispatcherHostDelegate::AcceptAuthRequest(
-    net::URLRequest* request,
-    net::AuthChallengeInfo* auth_info) {
-  return true;
-}
-
-bool AwResourceDispatcherHostDelegate::AcceptSSLClientCertificateRequest(
-    net::URLRequest* request,
-    net::SSLCertRequestInfo* cert_info) {
-  // WebView does not support client certificate selection, however it does
-  // send a no-certificate response to the server to allow it decide how to
-  // proceed. The base class returns false here, which causes the entire
-  // resource request to be abort. We don't want that, so we must return true
-  // here (and subsequently complete the request in
-  // AwContentBrowserClient::SelectClientCertificate) to get the intended
-  // behavior.
-  return true;
-}
-
 content::ResourceDispatcherHostLoginDelegate*
     AwResourceDispatcherHostDelegate::CreateLoginDelegate(
         net::AuthChallengeInfo* auth_info,