Add deprecation warnings for permission API usage from iframes

third_party/WebKit/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.cpp

 // Copyright 2014 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.
 
 #include "modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.h"
 
 #include <algorithm>
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
@@ skipping 12 matching lines @@
 #include "platform/Histogram.h"
 #include "platform/bindings/ScriptState.h"
 #include "platform/bindings/V8ThrowException.h"
 #include "platform/network/ParsedContentType.h"
 #include "platform/network/mime/ContentType.h"
 #include "platform/wtf/PtrUtil.h"
 #include "platform/wtf/Vector.h"
 #include "platform/wtf/text/WTFString.h"
 #include "public/platform/WebEncryptedMediaClient.h"
 #include "public/platform/WebEncryptedMediaRequest.h"
+#include "public/platform/WebFeaturePolicyFeature.h"
 #include "public/platform/WebMediaKeySystemConfiguration.h"
 #include "public/platform/WebMediaKeySystemMediaCapability.h"
 #include "public/platform/WebVector.h"
 
 namespace blink {
 
 namespace {
 
 static WebVector<WebEncryptedMediaInitDataType> ConvertInitDataTypes(
     const Vector<String>& init_data_types) {
@@ skipping 280 matching lines @@
     return ScriptPromise::RejectWithDOMException(
         script_state,
         DOMException::Create(
             kInvalidStateError,
             "The context provided is not associated with a page."));
   }
 
   UseCounter::Count(*document, WebFeature::kEncryptedMediaSecureOrigin);
   UseCounter::CountCrossOriginIframe(
       *document, WebFeature::kEncryptedMediaCrossOriginIframe);
+  Deprecation::CountDeprecationFeaturePolicy(*document,
+                                             WebFeaturePolicyFeature::kEme);
 
   // 4. Let origin be the origin of document.
   //    (Passed with the execution context.)
 
   // 5. Let promise be a new promise.
   MediaKeySystemAccessInitializer* initializer =
       new MediaKeySystemAccessInitializer(script_state, key_system,
                                           supported_configurations);
   ScriptPromise promise = initializer->Promise();
 
   // 6. Asynchronously determine support, and if allowed, create and
   //    initialize the MediaKeySystemAccess object.
   MediaKeysController* controller =
       MediaKeysController::From(document->GetPage());
   WebEncryptedMediaClient* media_client =
       controller->EncryptedMediaClient(execution_context);
   media_client->RequestMediaKeySystemAccess(
       WebEncryptedMediaRequest(initializer));
 
   // 7. Return promise.
   return promise;
 }
 
 }  // namespace blink