Minimal athena shell main

apps/shell/browser/shell_content_browser_client.h

Index: apps/shell/browser/shell_content_browser_client.h
diff --git a/apps/shell/browser/shell_content_browser_client.h b/apps/shell/browser/shell_content_browser_client.h
index 102173f697d5bef3e3fc503a5731ec1d6e0e6a71..7fbe3a14dd4d8a0f79833d55af5adddc93030d5d 100644
--- a/apps/shell/browser/shell_content_browser_client.h
+++ b/apps/shell/browser/shell_content_browser_client.h
@@ -19,12 +19,14 @@ class Extension;
 }
 
 namespace apps {
+class ShellBrowserMainDelegate;
 class ShellBrowserMainParts;
 
 // Content module browser process support for app_shell.
 class ShellContentBrowserClient : public content::ContentBrowserClient {
  public:
-  ShellContentBrowserClient();
+  explicit ShellContentBrowserClient(
+      ShellBrowserMainDelegate* browser_main_delegate);
   virtual ~ShellContentBrowserClient();
 
   // Returns the single instance.
@@ -64,6 +66,9 @@ class ShellContentBrowserClient : public content::ContentBrowserClient {
   // Owned by content::BrowserMainLoop.
   ShellBrowserMainParts* browser_main_parts_;
 
+  // Owned by ShellBrowserMainParts.
+  ShellBrowserMainDelegate* browser_main_delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(ShellContentBrowserClient);
 };