3 files changed, 13 insertions, 4 deletions
diff --git a/ppapi/thunk/ppb_scrollbar_api.h b/ppapi/thunk/ppb_scrollbar_api.h
index 05b3c17..042eec8 100644
--- a/ppapi/thunk/ppb_scrollbar_api.h
+++ b/ppapi/thunk/ppb_scrollbar_api.h
@@ -15,6 +15,7 @@ class PPB_Scrollbar_API {
   virtual ~PPB_Scrollbar_API() {}
 
   virtual uint32_t GetThickness() = 0;
+  virtual bool IsOverlay() = 0;
   virtual uint32_t GetValue() = 0;
   virtual void SetValue(uint32_t value) = 0;
   virtual void SetDocumentSize(uint32_t size) = 0;
diff --git a/ppapi/thunk/ppb_scrollbar_thunk.cc b/ppapi/thunk/ppb_scrollbar_thunk.cc
index 7b67db2..6e66483 100644
--- a/ppapi/thunk/ppb_scrollbar_thunk.cc
+++ b/ppapi/thunk/ppb_scrollbar_thunk.cc
@@ -33,6 +33,13 @@ uint32_t GetThickness(PP_Resource scrollbar) {
   return enter.object()->GetThickness();
 }
 
+PP_Bool IsOverlay(PP_Resource scrollbar) {
+  EnterScrollbar enter(scrollbar, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return PP_FromBool(enter.object()->IsOverlay());
+}
+
 uint32_t GetValue(PP_Resource scrollbar) {
   EnterScrollbar enter(scrollbar, true);
   if (enter.failed())
@@ -66,10 +73,11 @@ void ScrollBy(PP_Resource scrollbar, PP_ScrollBy_Dev unit, int32_t multiplier) {
     enter.object()->ScrollBy(unit, multiplier);
 }
 
-const PPB_Scrollbar_0_4_Dev g_ppb_scrollbar_thunk = {
+const PPB_Scrollbar_0_5_Dev g_ppb_scrollbar_thunk = {
   &Create,
   &IsScrollbar,
   &GetThickness,
+  &IsOverlay,
   &GetValue,
   &SetValue,
   &SetDocumentSize,
@@ -79,7 +87,7 @@ const PPB_Scrollbar_0_4_Dev g_ppb_scrollbar_thunk = {
 
 }  // namespace
 
-const PPB_Scrollbar_0_4_Dev* GetPPB_Scrollbar_Thunk() {
+const PPB_Scrollbar_0_5_Dev* GetPPB_Scrollbar_Thunk() {
   return &g_ppb_scrollbar_thunk;
 }
 
diff --git a/ppapi/thunk/thunk.h b/ppapi/thunk/thunk.h
index ac0008e..c7ac742 100644
--- a/ppapi/thunk/thunk.h
+++ b/ppapi/thunk/thunk.h
@@ -40,7 +40,7 @@ struct PPB_LayerCompositor_Dev;
 struct PPB_Messaging;
 struct PPB_MouseInputEvent;
 struct PPB_QueryPolicy_Dev;
-struct PPB_Scrollbar_0_4_Dev;
+struct PPB_Scrollbar_0_5_Dev;
 struct PPB_Surface3D_Dev;
 struct PPB_Transport_Dev;
 struct PPB_URLLoader;
@@ -95,7 +95,7 @@ const PPB_LayerCompositor_Dev* GetPPB_LayerCompositor_Thunk();
 const PPB_QueryPolicy_Dev* GetPPB_QueryPolicy_Thunk();
 const PPB_Messaging* GetPPB_Messaging_Thunk();
 const PPB_MouseInputEvent* GetPPB_MouseInputEvent_Thunk();
-const PPB_Scrollbar_0_4_Dev* GetPPB_Scrollbar_Thunk();
+const PPB_Scrollbar_0_5_Dev* GetPPB_Scrollbar_Thunk();
 const PPB_Surface3D_Dev* GetPPB_Surface3D_Thunk();
 const PPB_Transport_Dev* GetPPB_Transport_Thunk();
 const PPB_URLLoader* GetPPB_URLLoader_Thunk();