Add deprecation warnings for permission API usage from iframes

third_party/WebKit/public/platform/WebFeaturePolicyFeature.h

Index: third_party/WebKit/public/platform/WebFeaturePolicyFeature.h
diff --git a/third_party/WebKit/public/platform/WebFeaturePolicyFeature.h b/third_party/WebKit/public/platform/WebFeaturePolicyFeature.h
index a90defe2c15e85163a1cf5e1de65521aa713ee04..9e4e5f3c962cb8fbe2f9b9d1906b2a56a2b3be82 100644
--- a/third_party/WebKit/public/platform/WebFeaturePolicyFeature.h
+++ b/third_party/WebKit/public/platform/WebFeaturePolicyFeature.h
@@ -10,9 +10,9 @@ namespace blink {
 // These values map to the features which can be controlled by Feature Policy.
 //
 // Features are defined in
-// https://wicg.github.io/feature-policy/#defined-features. Many of these are
-// still under development in blink behind the featurePolicyExperimentalFeatures
-// flag, see getWebFeaturePolicyFeature().
+// https://github.com/WICG/feature-policy/blob/gh-pages/features.md. Many of
+// these are still under development in blink behind the
+// featurePolicyExperimentalFeatures flag, see getWebFeaturePolicyFeature().
 enum class WebFeaturePolicyFeature {
   kNotFound = 0,
   // Controls access to video input devices.