UMA stats for stylus usage

chrome/browser/ui/views/frame/browser_frame.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/frame/browser_frame.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/leak_annotations.h"
 #include "base/i18n/rtl.h"
 #include "build/build_config.h"
 #include "chrome/browser/app_mode/app_mode_utils.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/browser/themes/theme_service_factory.h"
+#include "chrome/browser/ui/ash/metrics/stylus_metrics_recorder.h"

[xiyuan, 2016/09/16 20:07:54]

ditto. Need to decide whether this is chormeos-only and if yes, need to be
wrapped under #if defined(OS_CHROMEOS).

[xiaoyinh(OOO Sep 11-29), 2016/09/16 22:34:25]

Wrapped under OS_CHROMEOS

 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window_state.h"
 #include "chrome/browser/ui/views/frame/browser_non_client_frame_view.h"
 #include "chrome/browser/ui/views/frame/browser_root_view.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/frame/immersive_mode_controller.h"
 #include "chrome/browser/ui/views/frame/native_browser_frame.h"
 #include "chrome/browser/ui/views/frame/native_browser_frame_factory.h"
 #include "chrome/browser/ui/views/frame/system_menu_model_builder.h"
@@ skipping 65 matching lines @@
     const base::CommandLine& parsed_command_line =
         *base::CommandLine::ForCurrentProcess();
 
     if (parsed_command_line.HasSwitch(switches::kWindowWorkspace)) {
       params.workspace =
           parsed_command_line.GetSwitchValueASCII(switches::kWindowWorkspace);
     }
   }
 
   Init(params);
+  browser_view_->GetNativeWindow()->SetProperty(
+      chromeos::kStylusWindowTypeBucket,
+      chromeos::StylusWindowType::WINDOW_TYPE_BROWSER_WINDOW);
 
   if (!native_browser_frame_->UsesNativeSystemMenu()) {
     DCHECK(non_client_view());
     non_client_view()->set_context_menu_controller(this);
   }
 
 #if defined(OS_LINUX)
   browser_command_handler_.reset(new BrowserCommandHandlerLinux(browser_view_));
 #endif
 }
@@ skipping 183 matching lines @@
 }
 
 views::View* BrowserFrame::GetNewAvatarMenuButton() {
   return browser_frame_view_->GetProfileSwitcherView();
 }
 
 void BrowserFrame::OnMenuClosed() {
   menu_model_adapter_.reset();
   menu_runner_.reset();
 }