Move app.window API implementation to extensions

Move files:
-Move chrome/browser/extensions/api/app_window/* to extensions/browser.
-Move app_window.idl, app_window_custom_bindings.{cc,h}, app_window_custom_bindings.js to extensions.
-Move window_controls.js and window_controls_template.html to extensions.

Move switches and code:
- Move kEnableAppWindowControls switch to extensions/common/switches.h.
- Move dummy WebContentsModalDialogManager::CreateNativeWebModalManager implementation from athena's web_contents_view_delegate_factory_impl.cc to a new file shell_web_contents_modal_dialog_manager.cc.

Fix dispatchers:
- Move code from chrome_extensions_dispatcher_delegate.cc to extensions/renderer/dispatcher.cc

BUG=387288

Review URL: https://codereview.chromium.org/534163002

Cr-Commit-Position: refs/heads/master@{#293409}

1 files changed, 0 insertions, 13 deletions

diff --git a/athena/content/web_contents_view_delegate_factory_impl.cc b/athena/content/web_contents_view_delegate_factory_impl.cc
index 8eecd26..fb0b27d 100644
--- a/athena/content/web_contents_view_delegate_factory_impl.cc
+++ b/athena/content/web_contents_view_delegate_factory_impl.cc
@@ -140,16 +140,3 @@ content::WebContentsViewDelegate* CreateWebContentsViewDelegate(
 }
 
 }  // namespace athena
-
-namespace web_modal {
-
-SingleWebContentsDialogManager*
-WebContentsModalDialogManager::CreateNativeWebModalManager(
-    NativeWebContentsModalDialog dialog,
-    SingleWebContentsDialogManagerDelegate* native_delegate) {
-  // TODO(oshima): Investigate if we need to implement this.
-  NOTREACHED();
-  return NULL;
-}
-
-}  // namespace web_modal