Remove app_shell chrome.shell API and ShellAppWindow

extensions/shell/renderer/shell_content_renderer_client.cc

Index: extensions/shell/renderer/shell_content_renderer_client.cc
diff --git a/extensions/shell/renderer/shell_content_renderer_client.cc b/extensions/shell/renderer/shell_content_renderer_client.cc
index 254f9fef1126d5b3f00e91074164e3c254e11b53..8525983488e880cbcaa9e433be37c2383215f0c9 100644
--- a/extensions/shell/renderer/shell_content_renderer_client.cc
+++ b/extensions/shell/renderer/shell_content_renderer_client.cc
@@ -9,10 +9,10 @@
 #include "content/public/renderer/render_frame_observer_tracker.h"
 #include "content/public/renderer/render_thread.h"
 #include "extensions/common/extensions_client.h"
+#include "extensions/renderer/default_dispatcher_delegate.h"
 #include "extensions/renderer/dispatcher.h"
 #include "extensions/renderer/extension_helper.h"
 #include "extensions/shell/common/shell_extensions_client.h"
-#include "extensions/shell/renderer/shell_dispatcher_delegate.h"
 #include "extensions/shell/renderer/shell_extensions_renderer_client.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
@@ -83,7 +83,7 @@ void ShellContentRendererClient::RenderThreadStarted() {
   extensions_renderer_client_.reset(new ShellExtensionsRendererClient);
   ExtensionsRendererClient::Set(extensions_renderer_client_.get());
 
-  extension_dispatcher_delegate_.reset(new ShellDispatcherDelegate());
+  extension_dispatcher_delegate_.reset(new DefaultDispatcherDelegate());
 
   // Must be initialized after ExtensionsRendererClient.
   extension_dispatcher_.reset(