Add global and per-browser settings (issue #145).

This exposes the following new capabilities:
- Ability to disable drag & drop from other windows.
- Ability to specify additional plugin search paths.
- Ability to customize WebPreferences values, including enabling cross-site scripting.
- Ability to set User-Agent or product version.
- Ability to set default locale.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@144 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser_webview_delegate.h

@@ -39,7 +39,6 @@
 #include "browser_navigation_controller.h"
 
 class CefBrowserImpl;
-struct WebPreferences;
 class GURL;
 class WebWidgetHost;
 class FilePath;
@@ -218,10 +217,6 @@ class BrowserWebViewDelegate : public WebKit::WebViewClient,
     pending_extra_data_.reset(extra_data);
   }
 
-  // Methods for modifying WebPreferences
-  void SetUserStyleSheetEnabled(bool is_enabled);
-  void SetUserStyleSheetLocation(const GURL& location);
-
   // Sets the webview as a drop target.
   void RegisterDragDrop();
   void RevokeDragDrop();