Add GetScrollOffset function to PPB_View

content/renderer/pepper/pepper_plugin_instance_impl.cc

Index: content/renderer/pepper/pepper_plugin_instance_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index 0811eba1f5d5c7cb0426baa15a1a18be97af67d4..ab2a790d3182499c926d7fcb4062f91bce63f610 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -1204,6 +1204,11 @@ void PepperPluginInstanceImpl::ViewChanged(
   view_data_.css_scale =
       container_->pageZoomFactor() * container_->pageScaleFactor();
 
+  gfx::Size scroll_offset =
+      container_->element().document().frame()->scrollOffset();
+  view_data_.scroll_offset = PP_MakePoint(scroll_offset.width(),
+                                          scroll_offset.height());
+
   if (desired_fullscreen_state_ || view_data_.is_fullscreen) {
     WebElement element = container_->element();
     WebDocument document = element.document();