Fix MediaClient::RequestCaptureState().

chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc

Index: chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc
diff --git a/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc b/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc
index 81133c1bf939bbf3878502f9fa1488f1c8e97554..ddb0dba0c79dc98ce97a8cbb3126d9d499908912 100644
--- a/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc
+++ b/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc
@@ -16,6 +16,7 @@
 #include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/ash/cast_config_client_media_router.h"
 #include "chrome/browser/ui/ash/chrome_new_window_client.h"
+#include "chrome/browser/ui/ash/chrome_shell_content_state.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.h"
 #include "chrome/browser/ui/ash/media_client.h"
 #include "chrome/browser/ui/views/ash/tab_scrubber.h"
@@ -81,6 +82,7 @@ void ChromeBrowserMainExtraPartsAsh::PostProfileInit() {
     chrome_launcher_controller_mus_ =
         base::MakeUnique<ChromeLauncherControllerMus>();
     chrome_launcher_controller_mus_->Init();
+    chrome_shell_content_state_ = base::MakeUnique<ChromeShellContentState>();
   }
 
   cast_config_client_media_router_ =