libcef: Update due to underlying chromium changes.

- External plugin loading support is now provided by webkit/glue/plugins so the libcef/plugins directory has been eliminated, with related changes.
- Modify the CefPluginInfo structure to use a more friendly data organization format.
- Remove CefUnregisterPlugin() as it is no longer functional.
- WebViewDelegate::ShowContextMenu() now receives the menu type as a bit-masked flag, so adjust the API accordingly.
- WebViewDelegate::GetContainingView() now returns a gfx::NativeViewId instead of a gfx::NativeView.
- Modify BrowserRequestContext because GetUserAgent() is now a virtual method of URLRequestContext.
- The data buffer in RequestProxy is now a net::IOBuffer.
- Add webkit_glue::GetScreenInfo().

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@10 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser_webkit_glue_win.cc

@@ -5,7 +5,6 @@
 
 #include "precompiled_libcef.h"
 #include "browser_webkit_glue.h"
-#include "plugins/browser_plugin_list.h"
 
 #include <atlcore.h>
 #include <atlbase.h>
@@ -47,7 +46,6 @@ HCURSOR LoadCursor(int cursor_id) {
 
 bool GetPlugins(bool refresh, std::vector<WebPluginInfo>* plugins) {
   NPAPI::PluginList::Singleton()->GetPlugins(refresh, plugins);
-  NPAPI::BrowserPluginList::Singleton()->GetPlugins(refresh, plugins);
   return true;
 }