UMA stats for stylus usage

chrome/browser/ui/views/apps/chrome_native_app_window_views.cc

Index: chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
diff --git a/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc b/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
index dfac3ccb9df96687260667119b6d559880f36475..f3b56c14e0415023e5c2d121f4bff455be735917 100644
--- a/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
+++ b/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
@@ -23,6 +23,10 @@
 #include "ui/views/controls/webview/webview.h"
 #include "ui/views/widget/widget.h"
 
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/ui/ash/metrics/stylus_metrics_recorder_chromeos.h"
+#endif
+
 using extensions::AppWindow;
 
 namespace {
@@ -141,6 +145,11 @@ void ChromeNativeAppWindowViews::InitializeDefaultWindow(
   OnBeforeWidgetInit(create_params, &init_params, widget());
   widget()->Init(init_params);
 
+#if defined(OS_CHROMEOS)
+  widget()->GetNativeWindow()->SetProperty(chromeos::kStylusWindowTypeBucket,
+                                           chromeos::StylusWindowType::APP);
+#endif
+
   // The frame insets are required to resolve the bounds specifications
   // correctly. So we set the window bounds and constraints now.
   gfx::Insets frame_insets = GetFrameInsets();