Revert of Move onReceivedError and onReceivedHttpError out of AwContentsIoThreadClientImpl

android_webview/browser/aw_contents_io_thread_client.h

Index: android_webview/browser/aw_contents_io_thread_client.h
diff --git a/android_webview/browser/aw_contents_io_thread_client.h b/android_webview/browser/aw_contents_io_thread_client.h
index e9a0bf3411514f0f28d08fdd5223375034ab3b9f..82968ed4cf718ad38d50a98765c5e8cc27c7ef76 100644
--- a/android_webview/browser/aw_contents_io_thread_client.h
+++ b/android_webview/browser/aw_contents_io_thread_client.h
@@ -13,6 +13,7 @@
 #include "base/callback_forward.h"
 
 namespace net {
+class HttpResponseHeaders;
 class URLRequest;
 }
 
@@ -94,6 +95,15 @@
 
   // Retrieve the AcceptThirdPartyCookies setting value of this AwContents.
   virtual bool ShouldAcceptThirdPartyCookies() const = 0;
+
+  // Called when a resource loading error has occured (e.g. an I/O error,
+  // host name lookup failure etc.)
+  virtual void OnReceivedError(const net::URLRequest* request) = 0;
+
+  // Called when a response from the server is received with status code >= 400.
+  virtual void OnReceivedHttpError(
+      const net::URLRequest* request,
+      const net::HttpResponseHeaders* response_headers) = 0;
 };
 
 } // namespace android_webview