Create BaseWindow and ExtensionWindowWrapper for extension API access to Panels

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index bb6b86e492640056e6f79b33e0b3a5836b58745f..991196157889477f01a455809674e7c004f19b5d 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -1043,6 +1043,8 @@
         'browser/extensions/browser_action_test_util_gtk.cc',
         'browser/extensions/browser_action_test_util_mac.mm',
         'browser/extensions/browser_action_test_util_views.cc',
+        'browser/extensions/browser_extension_window_wrapper.cc',
+        'browser/extensions/browser_extension_window_wrapper.h',
         'browser/extensions/component_loader.cc',
         'browser/extensions/component_loader.h',
         'browser/extensions/convert_user_script.cc',
@@ -1251,6 +1253,8 @@
         'browser/extensions/extension_updater.h',
         'browser/extensions/extension_warning_set.cc',
         'browser/extensions/extension_warning_set.h',
+        'browser/extensions/extension_window_wrapper.cc',
+        'browser/extensions/extension_window_wrapper.h',
         'browser/extensions/extension_web_socket_proxy_private_api.cc',
         'browser/extensions/extension_web_socket_proxy_private_api.h',
         'browser/extensions/extension_web_ui.cc',
@@ -2563,6 +2567,7 @@
         'browser/ui/auto_login_info_bar_delegate.h',
         'browser/ui/auto_login_prompter.cc',
         'browser/ui/auto_login_prompter.h',
+        'browser/ui/base_window.h',
         'browser/ui/blocked_content/blocked_content_container.cc',
         'browser/ui/blocked_content/blocked_content_container.h',
         'browser/ui/blocked_content/blocked_content_tab_helper.cc',