Differentiate invisible cursor mode and disabled mouse events mode.

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 7c9df2f6e32df01bebfd331e211fb7dea8ec1d6c..9bbdca258871ac167c59708e9bc86a7ca5ebf255 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -963,6 +963,8 @@ bool RenderViewHostImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(ViewHostMsg_OpenURL, OnOpenURL)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidContentsPreferredSizeChange,
                         OnDidContentsPreferredSizeChange)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_DidChangeScrollOffset,
+                        OnDidChangeScrollOffset)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidChangeScrollbarsForMainFrame,
                         OnDidChangeScrollbarsForMainFrame)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidChangeScrollOffsetPinningForMainFrame,
@@ -1375,6 +1377,11 @@ void RenderViewHostImpl::OnRenderAutoResized(const gfx::Size& new_size) {
   delegate_->ResizeDueToAutoResize(new_size);
 }
 
+void RenderViewHostImpl::OnDidChangeScrollOffset() {
+  if (view_)
+    view_->ScrollOffsetChanged();
+}
+
 void RenderViewHostImpl::OnDidChangeScrollbarsForMainFrame(
     bool has_horizontal_scrollbar, bool has_vertical_scrollbar) {
   if (view_)