app-shell: Introduce a ShellRendererMainDelegate.

apps/shell/app/shell_main_delegate.cc

Index: apps/shell/app/shell_main_delegate.cc
diff --git a/apps/shell/app/shell_main_delegate.cc b/apps/shell/app/shell_main_delegate.cc
index b8f835d1ae84a3e6177c0afabded275a1b090ed9..2a9cd1439f170df486bc20c0171418e236daf8c0 100644
--- a/apps/shell/app/shell_main_delegate.cc
+++ b/apps/shell/app/shell_main_delegate.cc
@@ -8,6 +8,7 @@
 #include "apps/shell/browser/shell_content_browser_client.h"
 #include "apps/shell/common/shell_content_client.h"
 #include "apps/shell/renderer/shell_content_renderer_client.h"
+#include "apps/shell/renderer/shell_renderer_main_delegate.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ -73,7 +74,8 @@ content::ContentBrowserClient* ShellMainDelegate::CreateContentBrowserClient() {
 
 content::ContentRendererClient*
 ShellMainDelegate::CreateContentRendererClient() {
-  renderer_client_.reset(new ShellContentRendererClient);
+  renderer_client_.reset(
+      new ShellContentRendererClient(CreateShellRendererMainDelegate()));
   return renderer_client_.get();
 }
 
@@ -81,6 +83,11 @@ ShellBrowserMainDelegate* ShellMainDelegate::CreateShellBrowserMainDelegate() {
   return new DefaultShellBrowserMainDelegate();
 }
 
+scoped_ptr<ShellRendererMainDelegate>
+ShellMainDelegate::CreateShellRendererMainDelegate() {
+  return scoped_ptr<ShellRendererMainDelegate>();
+}
+
 // static
 bool ShellMainDelegate::ProcessNeedsResourceBundle(
     const std::string& process_type) {