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 64683b5748f0368dbf8ca9324a050399ba055395..b015a0530e8a33db14487e3161136dcbfa9eb4bc 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
@@ -12,6 +12,7 @@
 #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/ash/session_controller_client.h"
@@ -68,6 +69,7 @@ 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_ =