Bug 1171182 - Browser Zoom Query for NPAPI; r=bsmedberg r=jaas

dom/plugins/base/nsNPAPIPluginInstance.h

@@ -100,6 +100,7 @@ public:
   nsresult GetDrawingModel(int32_t* aModel);
   nsresult IsRemoteDrawingCoreAnimation(bool* aDrawing);
   nsresult ContentsScaleFactorChanged(double aContentsScaleFactor);
+  nsresult CSSZoomFactorChanged(float aCSSZoomFactor);
   nsresult GetJSObject(JSContext *cx, JSObject** outObject);
   bool ShouldCache();
   nsresult IsWindowless(bool* isWindowless);
@@ -306,6 +307,9 @@ public:
   // Returns the contents scale factor of the screen the plugin is drawn on.
   double GetContentsScaleFactor();
 
+  // Returns the css zoom factor of the document the plugin is drawn on.
+  float GetCSSZoomFactor();
+
   nsresult GetRunID(uint32_t *aRunID);
 
   static bool InPluginCallUnsafeForReentry() { return gInUnsafePluginCalls > 0; }