Convert std::wstring encoding names to std::string in a bunch of files.

webkit/glue/webview.h

Index: webkit/glue/webview.h
diff --git a/webkit/glue/webview.h b/webkit/glue/webview.h
index 7346c1c565102065fb4db3a6e11f5208d076218d..0b55232ede0c3346f616da2fd3c69d3b33b1d776 100644
--- a/webkit/glue/webview.h
+++ b/webkit/glue/webview.h
@@ -156,10 +156,10 @@ class WebView : public WebKit::WebWidget {
   // Set the encoding of the current main frame. The value comes from
   // the encoding menu. WebKit uses the function named
   // SetCustomTextEncodingName to do override encoding job.
-  virtual void SetPageEncoding(const std::wstring& encoding_name) = 0;
+  virtual void SetPageEncoding(const std::string& encoding_name) = 0;
 
   // Return the canonical encoding name of current main webframe in webview.
-  virtual std::wstring GetMainFrameEncodingName() = 0;
+  virtual std::string GetMainFrameEncodingName() = 0;
 
   // Change the text zoom level. It will make the zoom level 20% larger or
   // smaller. If text_only is set, the text size will be changed. When unset,