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

chrome/browser/renderer_host/render_view_host.cc

Index: chrome/browser/renderer_host/render_view_host.cc
diff --git a/chrome/browser/renderer_host/render_view_host.cc b/chrome/browser/renderer_host/render_view_host.cc
index 95a53ddea2b1b1b3f729f87923dbd46b0e0832fd..ba82b8023eb877bc0a46b9fc05db16e3f2058178 100644
--- a/chrome/browser/renderer_host/render_view_host.cc
+++ b/chrome/browser/renderer_host/render_view_host.cc
@@ -440,7 +440,7 @@ void RenderViewHost::Zoom(PageZoom::Function function) {
   Send(new ViewMsg_Zoom(routing_id(), function));
 }
 
-void RenderViewHost::SetPageEncoding(const std::wstring& encoding_name) {
+void RenderViewHost::SetPageEncoding(const std::string& encoding_name) {
   Send(new ViewMsg_SetPageEncoding(routing_id(), encoding_name));
 }
 
@@ -975,7 +975,7 @@ void RenderViewHost::OnMsgUpdateTitle(int32 page_id,
   delegate_->UpdateTitle(this, page_id, title);
 }
 
-void RenderViewHost::OnMsgUpdateEncoding(const std::wstring& encoding_name) {
+void RenderViewHost::OnMsgUpdateEncoding(const std::string& encoding_name) {
   delegate_->UpdateEncoding(this, encoding_name);
 }