Revert of Remove a bunch of NPAPI quirks and related support code

content/renderer/npapi/webplugin_impl.h

Index: content/renderer/npapi/webplugin_impl.h
diff --git a/content/renderer/npapi/webplugin_impl.h b/content/renderer/npapi/webplugin_impl.h
index 8d54cc3bef34332fe25e7349b62ee486db990afb..3e695e61de08b87b547321b4c2f61b0e19746e87 100644
--- a/content/renderer/npapi/webplugin_impl.h
+++ b/content/renderer/npapi/webplugin_impl.h
@@ -110,6 +110,12 @@
   void DidStartLoading() override;
   void DidStopLoading() override;
   bool IsOffTheRecord() override;
+#if defined(OS_WIN)
+  void SetWindowlessData(HANDLE pump_messages_event,
+                         gfx::NativeViewId dummy_activation_window) override {}
+  void ReparentPluginWindow(HWND window, HWND parent) { }
+  void ReportExecutableMemory(size_t size) { }
+#endif
 #if defined(OS_MACOSX)
   WebPluginAcceleratedSurface* GetAcceleratedSurface(
       gfx::GpuPreference gpu_preference) override;