Make RenderView call the plugin through WebKit::WebPlugin (instead of casting...

third_party/npapi/bindings/npapi_extensions.h

 /* Copyright (c) 2006-2009 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 _NP_EXTENSIONS_H_
 #define _NP_EXTENSIONS_H_
 
 // Use the shorter include path here so that this file can be used in non-
 // Chromium projects, such as the Native Client SDK.
@@ skipping 1019 matching lines @@
 
 typedef struct _NPPFindExtensions {
   NPPStartFindPtr startFind;
   NPPSelectFindResultPtr selectFindResult;
   NPPStopFindPtr stopFind;
 } NPPFindExtensions;
 
 /* Returns NULL if the plugin does not support find extensions. */
 typedef NPPFindExtensions* (*NPPGetFindExtensionsPtr)(NPP instance);
 
-/* Zooms plugins.  0 means reset, -1 means zoom out, and +1 means zoom in. */
+/* Zooms a plugin to the given factor.  If text_only is true, then only the text
+ * should be zoomed. */
 typedef NPError (*NPPZoomPtr) (
     NPP instance,
-    int factor);
+    float factor,
+    bool text_only);
 
 typedef NPError (*NPPWidgetPropertyChangedPtr) (
     NPP instance,
     NPWidgetID id,
     NPWidgetProperty property);
 
 /* type of selection */
 typedef enum {
   NPSelectionTypeAny       = 0,
   NPSelectionTypePlainText = 1,
@@ skipping 14 matching lines @@
 
 typedef struct _NPPExtensions {
   NPPGetPrintExtensionsPtr getPrintExtensions;
   NPPGetFindExtensionsPtr getFindExtensions;
   NPPZoomPtr zoom;
   NPPWidgetPropertyChangedPtr widgetPropertyChanged;
   NPPGetSelectionPtr getSelection;
 } NPPExtensions;
 
 #endif  /* _NP_EXTENSIONS_H_ */