Integrate WebUSB with Feature Policy

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"
@@ skipping 36 matching lines @@
   // Controls access to Notification interface.
   kNotifications,
   // Controls access to PushManager interface.
   kPush,
   // Controls whether synchronous script elements will run.
   kSyncScript,
   // Controls use of synchronous XMLHTTPRequest API.
   kSyncXHR,
   // Controls access to RTCPeerConnection interface.
   kWebRTC,
-  LAST_FEATURE = kWebRTC
+  // Controls access to the WebUSB API.
+  kUsb,
+  LAST_FEATURE = kUsb
 };
 
 struct BLINK_PLATFORM_EXPORT WebParsedFeaturePolicyDeclaration {
   WebParsedFeaturePolicyDeclaration() : matches_all_origins(false) {}
   WebFeaturePolicyFeature feature;
   bool matches_all_origins;
   WebVector<WebSecurityOrigin> origins;
 };
 
 // Used in Blink code to represent parsed headers. Used for IPC between renderer
 // and browser.
 using WebParsedFeaturePolicy = 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