Added headless permission manager. This permissions manager simply acks all permission requests wit…

headless/lib/browser/headless_browser_context_impl.h

Index: headless/lib/browser/headless_browser_context_impl.h
diff --git a/headless/lib/browser/headless_browser_context_impl.h b/headless/lib/browser/headless_browser_context_impl.h
index 8d39dfcb44b2a935716be11cf8a9dcc413cdf020..688244917936123d7ac9e369501f85f4135758bb 100644
--- a/headless/lib/browser/headless_browser_context_impl.h
+++ b/headless/lib/browser/headless_browser_context_impl.h
@@ -98,6 +98,8 @@ class HeadlessBrowserContextImpl : public HeadlessBrowserContext,
   std::unordered_map<std::string, std::unique_ptr<HeadlessWebContents>>
       web_contents_map_;
 
+  std::unique_ptr<content::PermissionManager> permission_manager_;
+
   std::string id_;
 
   DISALLOW_COPY_AND_ASSIGN(HeadlessBrowserContextImpl);