Add Feature Policy interface to RenderFrameHost

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 55d6a08eced5a705888db727291502979b46785e..ee24d6327aff7161e92ef8553bb62ac827458e1d 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -107,6 +107,7 @@
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/service_manager/public/cpp/interface_provider.h"
+#include "third_party/WebKit/public/platform/WebFeaturePolicy.h"
 #include "ui/accessibility/ax_tree.h"
 #include "ui/accessibility/ax_tree_id_registry.h"
 #include "ui/accessibility/ax_tree_update.h"
@@ -1912,6 +1913,12 @@ bool RenderFrameHostImpl::IsBeforeUnloadHangMonitorDisabledForTesting() {
   return !beforeunload_timeout_;
 }
 
+bool RenderFrameHostImpl::IsFeatureEnabled(
+    blink::WebFeaturePolicyFeature feature) {
+  return feature_policy_->IsFeatureEnabledForOrigin(feature,

[Reilly Grant (use Gerrit), 2017/04/13 20:21:45]

I recommend making this feature_policy_ && feature_policy_->... because it seems
like right now there are cases where feature_policy_ will be null and we should
fail closed rather than with a null pointer dereference.

+                                                    GetLastCommittedOrigin());
+}
+
 void RenderFrameHostImpl::OnDidAccessInitialDocument() {
   delegate_->DidAccessInitialDocument();
 }