Remove unused blink::FeaturePolicy constructor.

Change-Id: I99db5b6c8845502d0d68079fe44e5d31dc805e0f
Reviewed-on: https://chromium-review.googlesource.com/1126204Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Ian Clelland <iclelland@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572621}

third_party/blink/common/feature_policy/feature_policy.cc

@@ -186,9 +186,6 @@ FeaturePolicy::FeaturePolicy(url::Origin origin,
                              const FeatureList& feature_list)
     : origin_(origin), feature_list_(feature_list) {}
 
-FeaturePolicy::FeaturePolicy(url::Origin origin)
-    : origin_(origin), feature_list_(GetDefaultFeatureList()) {}
-
 FeaturePolicy::~FeaturePolicy() = default;
 
 // static

third_party/blink/public/common/feature_policy/feature_policy.h

@@ -198,7 +198,6 @@ class BLINK_COMMON_EXPORT FeaturePolicy {
  private:
   friend class FeaturePolicyTest;
 
-  explicit FeaturePolicy(url::Origin origin);
   FeaturePolicy(url::Origin origin, const FeatureList& feature_list);
   static std::unique_ptr<FeaturePolicy> CreateFromParentPolicy(
       const FeaturePolicy* parent_policy,