aura: Allow creating content_shell without views.

content/shell/browser/shell.h

Index: content/shell/browser/shell.h
diff --git a/content/shell/browser/shell.h b/content/shell/browser/shell.h
index 370720261da8764c753ed2d517c467e4c2d92d16..ba3674972b3c4a9c6353eaf48b93d37881bc271d 100644
--- a/content/shell/browser/shell.h
+++ b/content/shell/browser/shell.h
@@ -11,6 +11,7 @@
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_piece.h"
+#include "build/build_config.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "ipc/ipc_channel.h"
@@ -39,6 +40,10 @@ class ViewsDelegate;
 class GURL;
 namespace content {
 
+#if defined(USE_AURA)
+class ShellAuraPlatformData;
+#endif
+
 class BrowserContext;
 class ShellDevToolsFrontend;
 class ShellJavaScriptDialogManager;
@@ -259,9 +264,13 @@ class Shell : public WebContentsDelegate,
 #if defined(OS_CHROMEOS)
   static shell::MinimalShell* minimal_shell_;
 #endif
+#if defined(TOOLKIT_VIEWS)
   static views::ViewsDelegate* views_delegate_;
 
   views::Widget* window_widget_;
+#else // defined(TOOLKIT_VIEWS)
+  scoped_ptr<ShellAuraPlatformData> platform_;
+#endif // defined(TOOLKIT_VIEWS)
 #elif defined(OS_MACOSX)
   int content_width_;
   int content_height_;