Move ShellWindow into apps component.

chrome/browser/extensions/shell_window_registry.cc

Index: chrome/browser/extensions/shell_window_registry.cc
diff --git a/chrome/browser/extensions/shell_window_registry.cc b/chrome/browser/extensions/shell_window_registry.cc
index 4e4c02a6b3e2e116fa832d1e8f5569488daee98d..38a8d38138b7d0c957fa1671ea6c41fbf169a922 100644
--- a/chrome/browser/extensions/shell_window_registry.cc
+++ b/chrome/browser/extensions/shell_window_registry.cc
@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "apps/shell_window.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/shell_window_registry.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/extensions/native_app_window.h"
-#include "chrome/browser/ui/extensions/shell_window.h"
 #include "chrome/common/extensions/extension.h"
 #include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
 #include "content/public/browser/devtools_agent_host.h"
@@ -17,6 +17,8 @@
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 
+using apps::ShellWindow;
+
 namespace {
 
 // Create a key that identifies a ShellWindow in a RenderViewHost across App
@@ -41,7 +43,7 @@ std::string GetWindowKeyForRenderViewHost(
   return key;
 }
 
-}
+}  // namespace
 
 namespace extensions {