Allow ParsedContentType to reject multiple definitions of the same parameter

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 33 matching lines @@
     result[i] = EncryptedMediaUtils::convertToInitDataType(initDataTypes[i]);
   return result;
 }
 
 static WebVector<WebMediaKeySystemMediaCapability> convertCapabilities(
     const HeapVector<MediaKeySystemMediaCapability>& capabilities) {
   WebVector<WebMediaKeySystemMediaCapability> result(capabilities.size());
   for (size_t i = 0; i < capabilities.size(); ++i) {
     const WebString& contentType = capabilities[i].contentType();
     result[i].contentType = contentType;
-    ParsedContentType type(contentType);
+    ParsedContentType type(contentType, ParsedContentType::Mode::Strict);
     if (type.isValid()) {
       // From
       // http://w3c.github.io/encrypted-media/#get-supported-capabilities-for-audio-video-type
       // "If the user agent does not recognize one or more parameters,
       // continue to the next iteration." There is no way to enumerate the
       // parameters, so only look up "codecs" if a single parameter is
       // present. Chromium expects "codecs" to be provided, so this capability
       // will be skipped if codecs is not the only parameter specified.
       result[i].mimeType = type.mimeType();
       if (type.parameterCount() == 1u)
@@ skipping 266 matching lines @@
   WebEncryptedMediaClient* mediaClient =
       controller->encryptedMediaClient(executionContext);
   mediaClient->requestMediaKeySystemAccess(
       WebEncryptedMediaRequest(initializer));
 
   // 7. Return promise.
   return promise;
 }
 
 }  // namespace blink