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_webview_delegate.h

@@ -78,7 +78,7 @@ class BrowserWebViewDelegate : public base::RefCounted<BrowserWebViewDelegate>,
   virtual void StartDragging(WebView* webview,
                              const WebDropData& drop_data);
   virtual void ShowContextMenu(WebView* webview,
-                               ContextNode::Type type,
+                               ContextNode in_node,
                                int x,
                                int y,
                                const GURL& link_url,
@@ -178,7 +178,7 @@ class BrowserWebViewDelegate : public base::RefCounted<BrowserWebViewDelegate>,
   virtual int GetHistoryForwardListCount();
 
   // WebWidgetDelegate
-  virtual gfx::NativeView GetContainingView(WebWidget* webwidget);
+  virtual gfx::NativeViewId GetContainingView(WebWidget* webwidget);
   virtual void DidInvalidateRect(WebWidget* webwidget, const gfx::Rect& rect);
   virtual void DidScrollRect(WebWidget* webwidget, int dx, int dy,
                              const gfx::Rect& clip_rect);