Fix virtual/override/final usage in Source/modules/.

Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.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 "config.h"
 #include "modules/encryptedmedia/HTMLMediaElementEncryptedMedia.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
@@ skipping 35 matching lines @@
     ASSERT_NOT_REACHED();
     return;
 }
 
 // This class allows MediaKeys to be set asynchronously.
 class SetMediaKeysHandler : public ScriptPromiseResolver {
     WTF_MAKE_NONCOPYABLE(SetMediaKeysHandler);
 
 public:
     static ScriptPromise create(ScriptState*, HTMLMediaElement&, MediaKeys*);
-    virtual ~SetMediaKeysHandler();
+    ~SetMediaKeysHandler() override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     SetMediaKeysHandler(ScriptState*, HTMLMediaElement&, MediaKeys*);
     void timerFired(Timer<SetMediaKeysHandler>*);
 
     void clearExistingMediaKeys();
     void setNewMediaKeys();
 
@@ skipping 17 matching lines @@
 // Calls |success| if result is resolved, |failure| is result is rejected.
 class SetContentDecryptionModuleResult final : public ContentDecryptionModuleResult {
 public:
     SetContentDecryptionModuleResult(PassOwnPtr<SuccessCallback> success, PassOwnPtr<FailureCallback> failure)
         : m_successCallback(success)
         , m_failureCallback(failure)
     {
     }
 
     // ContentDecryptionModuleResult implementation.
-    virtual void complete() override
+    void complete() override
     {
         (*m_successCallback)();
     }
 
-    virtual void completeWithContentDecryptionModule(WebContentDecryptionModule*) override
+    void completeWithContentDecryptionModule(WebContentDecryptionModule*) override
     {
         ASSERT_NOT_REACHED();
         (*m_failureCallback)(InvalidStateError, "Unexpected completion.");
     }
 
-    virtual void completeWithSession(WebContentDecryptionModuleResult::SessionStatus status) override
+    void completeWithSession(WebContentDecryptionModuleResult::SessionStatus status) override
     {
         ASSERT_NOT_REACHED();
         (*m_failureCallback)(InvalidStateError, "Unexpected completion.");
     }
 
-    virtual void completeWithError(WebContentDecryptionModuleException code, unsigned long systemCode, const WebString& message) override
+    void completeWithError(WebContentDecryptionModuleException code, unsigned long systemCode, const WebString& message) override
     {
         // Non-zero |systemCode| is appended to the |message|. If the |message|
         // is empty, we'll report "Rejected with system code (systemCode)".
         String errorString = message;
         if (systemCode != 0) {
             if (errorString.isEmpty())
                 errorString.append("Rejected with system code");
             errorString.append(" (" + String::number(systemCode) + ")");
         }
         (*m_failureCallback)(WebCdmExceptionToExceptionCode(code), errorString);
@@ skipping 510 matching lines @@
     return thisElement.contentDecryptionModule();
 }
 
 DEFINE_TRACE(HTMLMediaElementEncryptedMedia)
 {
     visitor->trace(m_mediaKeys);
     WillBeHeapSupplement<HTMLMediaElement>::trace(visitor);
 }
 
 } // namespace blink