ash: Use session_manager::SessionState

components/session_manager/BUILD.gn

Index: components/session_manager/BUILD.gn
diff --git a/extensions/browser/guest_view/web_view/web_ui/BUILD.gn b/components/session_manager/BUILD.gn
similarity index 68%
copy from extensions/browser/guest_view/web_view/web_ui/BUILD.gn
copy to components/session_manager/BUILD.gn
index 9b26c4180764edd2ed8aa89af4af54f0e02b71b2..26fc39be0bf80ec7a2aa4611c5f3700de0d510fd 100644
--- a/extensions/browser/guest_view/web_view/web_ui/BUILD.gn
+++ b/components/session_manager/BUILD.gn
@@ -2,9 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("web_ui") {
+source_set("base") {
   sources = [
-    "web_ui_url_fetcher.cc",
-    "web_ui_url_fetcher.h",
+    "session_manager_export.h",
+    "session_manager_types.h",
   ]
 }