added a headlessresourcedispatcherhostdelegate so that we do not crash when a website requests a cl…

headless/lib/browser/headless_content_browser_client.h

Index: headless/lib/browser/headless_content_browser_client.h
diff --git a/headless/lib/browser/headless_content_browser_client.h b/headless/lib/browser/headless_content_browser_client.h
index 53a950406e1f2327b373aaae9505fba341859e3b..d1ca74cce4ff07510db7f1812bc1e766b478345d 100644
--- a/headless/lib/browser/headless_content_browser_client.h
+++ b/headless/lib/browser/headless_content_browser_client.h
@@ -6,6 +6,7 @@
 #define HEADLESS_LIB_BROWSER_HEADLESS_CONTENT_BROWSER_CLIENT_H_
 
 #include "content/public/browser/content_browser_client.h"
+#include "headless/lib/browser/headless_resource_dispatcher_host_delegate.h"
 
 namespace headless {
 
@@ -37,9 +38,14 @@ class HeadlessContentBrowserClient : public content::ContentBrowserClient {
   void AppendExtraCommandLineSwitches(base::CommandLine* command_line,
                                       int child_process_id) override;
 
+  void ResourceDispatcherHostCreated() override;
+
  private:
   HeadlessBrowserImpl* browser_;  // Not owned.
 
+  std::unique_ptr<HeadlessResourceDispatcherHostDelegate>
+      resource_dispatcher_host_delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(HeadlessContentBrowserClient);
 };