OOP PDF - Add support for "zoom" open pdf parameter

pdf/instance.h

Index: pdf/instance.h
diff --git a/pdf/instance.h b/pdf/instance.h
index c377b032c0f69c5490bbb58e89a1e5af72b44f20..8b624fb2f456f844e35e009bad5f5fa9fec0165a 100644
--- a/pdf/instance.h
+++ b/pdf/instance.h
@@ -255,6 +255,10 @@ class Instance : public pp::InstancePrivate,
   // frame's origin.
   pp::URLLoader CreateURLLoaderInternal();
 
+  // Handle open pdf parameters.
+  void HandleOpenParameters(const std::string& url);
+  void HandleZoomParameter(const std::string& value);
+
   // Figure out the initial page to display based on #page=N and #nameddest=foo
   // in the |url_|.
   // Returns -1 if there is no valid fragment. The returned value is 0-based,