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 609817609f41502c5a455d2e630daac4d0993d1d..33f327df2fa363fdd004659617b0d106663800a9 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
@@ -592,10 +592,9 @@ 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()->setFeaturePolicyFromHeader(
           parsedHeader, parentFeaturePolicy);
       for (auto& message : messages) {