Remove unused blink::FeaturePolicy class.

third_party/WebKit/Source/core/loader/FrameLoader.cpp

Index: third_party/WebKit/Source/core/loader/FrameLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/FrameLoader.cpp b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
index 768ca662ff45b7c554717484cb15ea3e8adf7097..2669c912e5def6dc81ef34fa870a8627523764b5 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
@@ -593,10 +593,9 @@ void FrameLoader::didBeginDocument() {
           m_documentLoader->response().httpHeaderField(
               HTTPNames::Feature_Policy);
       Vector<String> messages;
-      const WebParsedFeaturePolicyHeader& parsedHeader =
-          FeaturePolicy::parseFeaturePolicy(
-              featurePolicyHeader,
-              m_frame->securityContext()->getSecurityOrigin(), &messages);
+      const WebParsedFeaturePolicyHeader& parsedHeader = parseFeaturePolicy(
+          featurePolicyHeader, m_frame->securityContext()->getSecurityOrigin(),
+          &messages);
       m_frame->securityContext()->initializeFeaturePolicy(parsedHeader,
                                                           parentFeaturePolicy);
       for (auto& message : messages) {