Pepper Flash Mac: Fix crash when playing video on MB retina

webkit/plugins/ppapi/ppapi_plugin_instance.cc

Index: webkit/plugins/ppapi/ppapi_plugin_instance.cc
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.cc b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
index 11378904d637a7e86fd18a7db0a6c42dd43b9cca..d31a26f40e5a6467e8422f3a3d66a8f9f866a3f3 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.cc
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
@@ -875,7 +875,8 @@ bool PluginInstance::GetBitmapForOptimizedPluginPaint(
     const gfx::Rect& paint_bounds,
     TransportDIB** dib,
     gfx::Rect* location,
-    gfx::Rect* clip) {
+    gfx::Rect* clip,
+    float* scale_factor) {
   if (!always_on_top_)
     return false;
   if (!GetBoundGraphics2D() || !GetBoundGraphics2D()->is_always_opaque())
@@ -902,6 +903,7 @@ bool PluginInstance::GetBitmapForOptimizedPluginPaint(
   *dib = image_data->PlatformImage()->GetTransportDIB();
   *location = plugin_backing_store_rect;
   *clip = clip_page;
+  *scale_factor = GetBoundGraphics2D()->GetScale();
   return true;
 }