PlzNavigate: support the WebRequest API

content/public/browser/content_browser_client.cc

Index: content/public/browser/content_browser_client.cc
diff --git a/content/public/browser/content_browser_client.cc b/content/public/browser/content_browser_client.cc
index ba972e9d89ae3b433d9dfca0aa614b61b5fa1efd..0fb4bdd2f88d228bb703663160d6e9be55722871 100644
--- a/content/public/browser/content_browser_client.cc
+++ b/content/public/browser/content_browser_client.cc
@@ -8,6 +8,7 @@
 #include "base/guid.h"
 #include "build/build_config.h"
 #include "content/public/browser/client_certificate_delegate.h"
+#include "content/public/browser/navigation_ui_data.h"
 #include "content/public/browser/vpn_service_proxy.h"
 #include "content/public/common/sandbox_type.h"
 #include "media/base/cdm_factory.h"
@@ -393,6 +394,11 @@ ContentBrowserClient::CreateThrottlesForNavigation(
   return ScopedVector<NavigationThrottle>();
 }
 
+std::unique_ptr<NavigationUIData> ContentBrowserClient::GetNavigationUIData(
+    NavigationHandle* navigation_handle) {
+  return nullptr;
+}
+
 #if defined(OS_WIN)
 const wchar_t* ContentBrowserClient::GetResourceDllName() {
   return nullptr;