Need to set the MICROSOFT_TABLETPENSERVICE_PROPERTY window property even for child windows

content/browser/renderer_host/legacy_render_widget_host_win.cc

Index: content/browser/renderer_host/legacy_render_widget_host_win.cc
diff --git a/content/browser/renderer_host/legacy_render_widget_host_win.cc b/content/browser/renderer_host/legacy_render_widget_host_win.cc
index f99cb38ef6e07195ddccbf4b17e54988e97faa05..c82f16812e76c177c7d357f2393069e64521dcf0 100644
--- a/content/browser/renderer_host/legacy_render_widget_host_win.cc
+++ b/content/browser/renderer_host/legacy_render_widget_host_win.cc
@@ -17,6 +17,7 @@
 #include "ui/base/view_prop.h"
 #include "ui/base/win/internal_constants.h"
 #include "ui/base/win/window_event_target.h"
+#include "base/win/win_util.h"

[ananta, 2016/04/04 21:17:59]

Please fix the include order

[kylix_rd, 2016/04/04 21:40:51]

Done.

 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/win/direct_manipulation.h"
 #include "ui/gfx/win/dpi.h"
@@ -96,6 +97,10 @@ void LegacyRenderWidgetHostHWND::OnFinalMessage(HWND hwnd) {
     host_->OnLegacyWindowDestroyed();
     host_ = NULL;
   }
+
+  // Re-enable flicks for just a moment
+  base::win::AllowFlicks(hwnd, true);
+
   delete this;
 }
 
@@ -136,6 +141,9 @@ bool LegacyRenderWidgetHostHWND::Init() {
   if (direct_manipulation_helper_)
     direct_manipulation_helper_->Initialize(hwnd());
 
+  // Disable pen flicks (http://crbug.com/506977)
+  base::win::AllowFlicks(hwnd(), false);
+
   return !!SUCCEEDED(hr);
 }