Implementation for feature policy - vibrate.

third_party/WebKit/Source/bindings/core/v8/ConditionalFeatures.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "bindings/core/v8/ConditionalFeatures.h"
 
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8Document.h"
 #include "bindings/core/v8/V8HTMLLinkElement.h"
 #include "bindings/core/v8/V8Navigator.h"
@@ skipping 58 matching lines @@
   DCHECK(scriptState->world().isMainWorld());
   (*s_installConditionalFeaturesFunction)(&V8Window::wrapperTypeInfo,
                                           scriptState, v8::Local<v8::Object>(),
                                           v8::Local<v8::Function>());
 }
 
 bool isFeatureEnabledInFrame(const FeaturePolicy::Feature& feature,
                              const LocalFrame* frame) {
   // If there is no frame, or if feature policy is disabled, use defaults.
   bool enabledByDefault =
-      (feature.defaultPolicy != FeaturePolicy::FeatureDefault::DisableForAll);
+      (feature.defaultPolicy == FeaturePolicy::FeatureDefault::EnableForAll ||
+       (feature.defaultPolicy == FeaturePolicy::FeatureDefault::EnableForSelf &&
+        !frame->isCrossOriginSubframe()));
   if (!RuntimeEnabledFeatures::featurePolicyEnabled() || !frame)
     return enabledByDefault;
   FeaturePolicy* featurePolicy = frame->securityContext()->getFeaturePolicy();
   // The policy should always be initialized before checking it to ensure we
   // properly inherit the parent policy.
   DCHECK(featurePolicy);
 
   // Otherwise, check policy.
   return featurePolicy->isFeatureEnabled(feature);
 }
 
 }  // namespace blink