Remove unused blink::FeaturePolicy class.

third_party/WebKit/Source/core/html/HTMLIFrameElementAllow.cpp

 // Copyright 2017 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 "core/html/HTMLIFrameElementAllow.h"
 
 #include "core/html/HTMLIFrameElement.h"
 #include "platform/feature_policy/FeaturePolicy.h"
 
 using blink::WebFeaturePolicyFeature;
@@ skipping 14 matching lines @@
 Vector<WebFeaturePolicyFeature>
 HTMLIFrameElementAllow::parseAllowedFeatureNames(
     String& invalidTokensErrorMessage) const {
   Vector<WebFeaturePolicyFeature> featureNames;
   unsigned numTokenErrors = 0;
   StringBuilder tokenErrors;
   const SpaceSplitString& tokens = this->tokens();
 
   // Collects a list of valid feature names.
   for (size_t i = 0; i < tokens.size(); ++i) {
-    WebFeaturePolicyFeature feature =
-        FeaturePolicy::getWebFeaturePolicyFeature(tokens[i]);
+    WebFeaturePolicyFeature feature = getWebFeaturePolicyFeature(tokens[i]);
     if (feature == WebFeaturePolicyFeature::NotFound) {
       tokenErrors.append(tokenErrors.isEmpty() ? "'" : ", '");
       tokenErrors.append(tokens[i]);
       tokenErrors.append("'");
       ++numTokenErrors;
     } else {
       featureNames.push_back(feature);
     }
   }
 
   if (numTokenErrors) {
     tokenErrors.append(numTokenErrors > 1 ? " are invalid feature names."
                                           : " is an invalid feature name.");
     invalidTokensErrorMessage = tokenErrors.toString();
   }
 
   // Create a unique set of feature names.
   std::sort(featureNames.begin(), featureNames.end());
   auto it = std::unique(featureNames.begin(), featureNames.end());
   featureNames.shrink(it - featureNames.begin());
 
   return featureNames;
 }
 
 bool HTMLIFrameElementAllow::validateTokenValue(const AtomicString& tokenValue,
                                                 ExceptionState&) const {
-  return FeaturePolicy::getWebFeaturePolicyFeature(tokenValue.getString()) !=
+  return getWebFeaturePolicyFeature(tokenValue.getString()) !=
          WebFeaturePolicyFeature::NotFound;
 }
 
 void HTMLIFrameElementAllow::valueWasSet() {
   DCHECK(m_element);
   m_element->allowValueWasSet();
 }
 
 }  // namespace blink