Make content::FeaturePolicy implement WebFeaturePolicy, and use it in blink code

third_party/WebKit/public/platform/WebFeaturePolicy.h

 // 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.
 
 #ifndef WebFeaturePolicy_h
 #define WebFeaturePolicy_h
 
+#include "WebCommon.h"
 #include "WebSecurityOrigin.h"
 #include "WebString.h"
 #include "WebVector.h"
 
 namespace blink {
 
 // These values map to the features which can be controlled by Feature Policy.
 // TODO(iclelland): Link to the spec where the behaviour for each of these is
 // defined.
 enum class WebFeaturePolicyFeature {
@@ skipping 22 matching lines @@
   SyncXHR,
   // Controls access to NavigatorUserMedia interface.
   Usermedia,
   // Controls access to navigator.vibrate method.
   Vibrate,
   // Controls access to RTCPeerConnection interface.
   WebRTC,
   LAST_FEATURE = WebRTC
 };
 
-struct WebParsedFeaturePolicyDeclaration {
+struct BLINK_PLATFORM_EXPORT WebParsedFeaturePolicyDeclaration {
   WebParsedFeaturePolicyDeclaration() : matchesAllOrigins(false) {}
   WebString featureName;
   bool matchesAllOrigins;
   WebVector<WebSecurityOrigin> origins;
 };
 
 // Used in Blink code to represent parsed headers. Used for IPC between renderer
 // and browser.
 using WebParsedFeaturePolicyHeader =
     WebVector<WebParsedFeaturePolicyDeclaration>;
 
+// Composed full policy for a document. Stored in SecurityContext for each
+// document. This is essentially an opaque handle to an object in the embedder.
+class BLINK_PLATFORM_EXPORT WebFeaturePolicy {
+ public:
+  virtual ~WebFeaturePolicy() {}
+
+  // Returns whether or not the given feature is enabled for the origin of the
+  // document that owns the policy.
+  virtual bool IsFeatureEnabled(blink::WebFeaturePolicyFeature) const = 0;
+};
+
 }  // namespace blink
 
 #endif  // WebFeaturePolicy_h