[Android WebView] Implement OnReceivedHttpError callback

android_webview/native/aw_contents_io_thread_client_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_IO_THREAD_CLIENT_IMPL_H_
 #define ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_IO_THREAD_CLIENT_IMPL_H_
 
 #include "android_webview/browser/aw_contents_io_thread_client.h"
 
 #include "base/android/scoped_java_ref.h"
@@ skipping 44 matching lines @@
   bool ShouldAcceptThirdPartyCookies() const override;
   bool ShouldBlockNetworkLoads() const override;
   void NewDownload(const GURL& url,
                    const std::string& user_agent,
                    const std::string& content_disposition,
                    const std::string& mime_type,
                    int64 content_length) override;
   void NewLoginRequest(const std::string& realm,
                        const std::string& account,
                        const std::string& args) override;
+  void OnHeadersReceived(
+      const net::URLRequest* request,
+      const net::HttpResponseHeaders* response_headers) override;
 
  private:
   bool pending_association_;
   base::android::ScopedJavaGlobalRef<jobject> java_object_;
 
   DISALLOW_COPY_AND_ASSIGN(AwContentsIoThreadClientImpl);
 };
 
 // JNI registration method.
 bool RegisterAwContentsIoThreadClientImpl(JNIEnv* env);
 
 } // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_IO_THREAD_CLIENT_IMPL_H_