[android_webview] Add more params to request intercepting.

android_webview/native/android_protocol_handler.cc

Index: android_webview/native/android_protocol_handler.cc
diff --git a/android_webview/native/android_protocol_handler.cc b/android_webview/native/android_protocol_handler.cc
index 858d0fe16a8419c11516b6e39754e0039726bd0c..1e7ce6a94ffddc4991403ceee4b075a4d3cf8b5b 100644
--- a/android_webview/native/android_protocol_handler.cc
+++ b/android_webview/native/android_protocol_handler.cc
@@ -77,6 +77,9 @@ class AndroidStreamReaderURLRequestJobDelegateImpl
                           InputStream* stream,
                           std::string* charset) OVERRIDE;
 
+  virtual void UpdateHeaders(JNIEnv* env,
+                             net::HttpResponseHeaders* headers) OVERRIDE;
+
   virtual ~AndroidStreamReaderURLRequestJobDelegateImpl();
 };
 
@@ -197,6 +200,12 @@ bool AndroidStreamReaderURLRequestJobDelegateImpl::GetCharset(
   return false;
 }
 
+void AndroidStreamReaderURLRequestJobDelegateImpl::UpdateHeaders(
+    JNIEnv* env,
+    net::HttpResponseHeaders* headers) {
+  // no-op
+}
+
 // AndroidProtocolHandlerBase -------------------------------------------------
 
 net::URLRequestJob* AndroidProtocolHandlerBase::MaybeCreateJob(