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

content/public/renderer/content_renderer_client.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 CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 #define CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 66 matching lines @@
   // Sets a number of views/tabs opened in this process.
   virtual void SetNumberOfViews(int number_of_views) {}
 
   // Returns the bitmap to show when a plugin crashed, or NULL for none.
   virtual SkBitmap* GetSadPluginBitmap();
 
   // Returns the bitmap to show when a <webview> guest has crashed, or NULL for
   // none.
   virtual SkBitmap* GetSadWebViewBitmap();
 
-  // Returns the default text encoding.
-  virtual std::string GetDefaultEncoding();
-
   // Allows the embedder to override creating a plugin. If it returns true, then
   // |plugin| will contain the created plugin, although it could be NULL. If it
   // returns false, the content layer will create the plugin.
   virtual bool OverrideCreatePlugin(
       RenderFrame* render_frame,
       blink::WebLocalFrame* frame,
       const blink::WebPluginParams& params,
       blink::WebPlugin** plugin);
 
   // Creates a replacement plug-in that is shown when the plug-in at |file_path|
@@ skipping 175 matching lines @@
   virtual bool IsPluginAllowedToUseDevChannelAPIs();
 
   // Returns a user agent override specific for |url|, or empty string if
   // default user agent should be used.
   virtual std::string GetUserAgentOverrideForURL(const GURL& url);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_