Add IsScalingDisabled and PP_PRINTOUTPUTFORMAT_EMF to pepper printing interface.

webkit/plugins/ppapi/ppapi_webplugin_impl.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PPAPI_WEBPLUGIN_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPAPI_WEBPLUGIN_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 55 matching lines @@
   virtual WebKit::WebString selectionAsText() const;
   virtual WebKit::WebString selectionAsMarkup() const;
   virtual WebKit::WebURL linkAtPosition(const WebKit::WebPoint& position) const;
   virtual void setZoomLevel(double level, bool text_only);
   virtual bool startFind(const WebKit::WebString& search_text,
                          bool case_sensitive,
                          int identifier);
   virtual void selectFindResult(bool forward);
   virtual void stopFind();
   virtual bool supportsPaginatedPrint();
+  virtual bool isPrintScalingDisabled();

[dmichael (off chromium), 2011/09/27 15:28:38]

It looks like this function is not available yet...  is there a WebKit patch
pending?

If possible, it would be best for these functions to have OVERRIDE on them to
protect against bugs like I made in the ppapi example, where an override turned
in to dead code:
http://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thre...

[vandebo (ex-Chrome), 2011/09/27 20:02:24]

Yes: https://bugs.webkit.org/show_bug.cgi?id=68853
Done.  But that required pulling the webkit/plugins changes into a different CL:
http://codereview.chromium.org/8051018/

   virtual int printBegin(const WebKit::WebRect& printable_area,
                          int printer_dpi);
   virtual bool printPage(int page_number, WebKit::WebCanvas* canvas);
   virtual void printEnd();
 
   struct InitData;
 
   scoped_ptr<InitData> init_data_;  // Cleared upon successful initialization.
   // True if the instance represents the entire document in a frame instead of
   // being an embedded resource.
   bool full_frame_;
   scoped_refptr<PluginInstance> instance_;
   scoped_refptr<PPB_URLLoader_Impl> document_loader_;
   gfx::Rect plugin_rect_;
 
   DISALLOW_COPY_AND_ASSIGN(WebPluginImpl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPAPI_WEBPLUGIN_IMPL_H_