Add GetIsPinnedToTaskbarState()

chrome/browser/ui/webui/welcome_win10_handler.h

Index: chrome/browser/ui/webui/welcome_win10_handler.h
diff --git a/chrome/browser/ui/webui/welcome_win10_handler.h b/chrome/browser/ui/webui/welcome_win10_handler.h
index aafbf863d00fe749fcf6c292dc780d884b724537..440eb75641ce1bb603bb2ab35997ed0dac3e8587 100644
--- a/chrome/browser/ui/webui/welcome_win10_handler.h
+++ b/chrome/browser/ui/webui/welcome_win10_handler.h
@@ -5,14 +5,12 @@
 #ifndef CHROME_BROWSER_UI_WEBUI_WELCOME_WIN10_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_WELCOME_WIN10_HANDLER_H_
 
-#include <memory>
 #include <string>
 
 #include "base/macros.h"
+#include "base/memory/weak_ptr.h"
 #include "base/optional.h"
 #include "base/timer/timer.h"
-#include "chrome/common/shell_handler_win.mojom.h"
-#include "content/public/browser/utility_process_mojo_client.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
 namespace base {
@@ -36,7 +34,7 @@ class WelcomeWin10Handler : public content::WebUIMessageHandler {
 
   void StartIsPinnedToTaskbarCheck();
 
-  // Callback for mojom::ShellHandler's call to IsPinnedToTaskbar().
+  // Callback for shell_integration::win::GetIsPinnedToTaskbarState().
   void OnIsPinnedToTaskbarResult(bool succeeded, bool is_pinned_to_taskbar);
 
   // Sets the internal result and optionally call
@@ -48,8 +46,6 @@ class WelcomeWin10Handler : public content::WebUIMessageHandler {
   // promise.
   void SendPinnedToTaskbarStateResult();
 
-  std::unique_ptr<content::UtilityProcessMojoClient<mojom::ShellHandler>>
-      client_;
   base::OneShotTimer timer_;
 
   // Acts as a cache to hold the taskbar pinned state of Chrome. It has no value
@@ -62,6 +58,8 @@ class WelcomeWin10Handler : public content::WebUIMessageHandler {
   // when it is received, or wait for the call to happen.
   std::string pinned_state_callback_id_;
 
+  base::WeakPtrFactory<WelcomeWin10Handler> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(WelcomeWin10Handler);
 };