[android_webview] Hardcode the default text encoding to UTF-8.

android_webview/renderer/aw_content_renderer_client.cc

 // Copyright 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.
 
 #include "android_webview/renderer/aw_content_renderer_client.h"
 
 #include "android_webview/common/aw_resource.h"
 #include "android_webview/common/render_view_messages.h"
 #include "android_webview/common/url_constants.h"
 #include "android_webview/renderer/aw_key_systems.h"
@@ skipping 129 matching lines @@
   AwRenderViewExt::RenderViewCreated(render_view);
 
   new printing::PrintWebViewHelper(render_view);
   // TODO(sgurun) do not create a password autofill agent (change
   // autofill agent to store a weakptr).
   autofill::PasswordAutofillAgent* password_autofill_agent =
       new autofill::PasswordAutofillAgent(render_view);
   new autofill::AutofillAgent(render_view, password_autofill_agent, NULL);
 }
 
-std::string AwContentRendererClient::GetDefaultEncoding() {
-  return AwResource::GetDefaultTextEncoding();
-}
-
 bool AwContentRendererClient::HasErrorPage(int http_status_code,
                           std::string* error_domain) {
   return http_status_code >= 400;
 }
 
 void AwContentRendererClient::GetNavigationErrorStrings(
     content::RenderView* /* render_view */,
     blink::WebFrame* /* frame */,
     const blink::WebURLRequest& failed_request,
     const blink::WebURLError& error,
@@ skipping 39 matching lines @@
 
 bool AwContentRendererClient::ShouldOverridePageVisibilityState(
     const content::RenderFrame* render_frame,
     blink::WebPageVisibilityState* override_state) {
   // webview is always visible due to rendering requirements.
   *override_state = blink::WebPageVisibilityStateVisible;
   return true;
 }
 
 }  // namespace android_webview