Stop sending Accept-Charset HTTP header.

android_webview/browser/net/aw_url_request_context_getter.cc

Index: android_webview/browser/net/aw_url_request_context_getter.cc
diff --git a/android_webview/browser/net/aw_url_request_context_getter.cc b/android_webview/browser/net/aw_url_request_context_getter.cc
index 3337292948c2b306a70356124aa8bba4bae6cc9f..882a967f8d06621620e2a0bb8cba927fd45f74d5 100644
--- a/android_webview/browser/net/aw_url_request_context_getter.cc
+++ b/android_webview/browser/net/aw_url_request_context_getter.cc
@@ -58,9 +58,6 @@ void AwURLRequestContextGetter::Init() {
       content::GetContentClient()->browser()->GetAcceptLangs(
           browser_context_)));
 
-  builder.set_accept_charset(
-      net::HttpUtil::GenerateAcceptCharsetHeader("utf-8"));
-
   url_request_context_.reset(builder.Build());
 
   // TODO(mnaganov): Fix URLRequestContextBuilder to use proper threads.