Simplify use of ContentDecryptionModuleResult with promises

Source/modules/encryptedmedia/SimpleContentDecryptionModuleResult.cpp

Index: Source/modules/encryptedmedia/SimpleContentDecryptionModuleResult.cpp
diff --git a/Source/modules/encryptedmedia/SimpleContentDecryptionModuleResult.cpp b/Source/modules/encryptedmedia/SimpleContentDecryptionModuleResult.cpp
deleted file mode 100644
index 8d8e658a3a34baa1e640efc02ee2f538832ad8d1..0000000000000000000000000000000000000000
--- a/Source/modules/encryptedmedia/SimpleContentDecryptionModuleResult.cpp
+++ /dev/null
@@ -1,81 +0,0 @@
-// 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/SimpleContentDecryptionModuleResult.h"
-
-#include "bindings/core/v8/ScriptPromise.h"
-#include "bindings/core/v8/ScriptPromiseResolver.h"
-#include "bindings/core/v8/ScriptState.h"
-#include "bindings/core/v8/V8Binding.h"
-#include "core/dom/DOMException.h"
-#include "platform/Logging.h"
-#include "public/platform/WebString.h"
-#include "wtf/Assertions.h"
-
-namespace blink {
-
-ExceptionCode WebCdmExceptionToExceptionCode(WebContentDecryptionModuleException cdmException)
-{
-    switch (cdmException) {
-    case WebContentDecryptionModuleExceptionNotSupportedError:
-        return NotSupportedError;
-    case WebContentDecryptionModuleExceptionInvalidStateError:
-        return InvalidStateError;
-    case WebContentDecryptionModuleExceptionInvalidAccessError:
-        return InvalidAccessError;
-    case WebContentDecryptionModuleExceptionQuotaExceededError:
-        return QuotaExceededError;
-    case WebContentDecryptionModuleExceptionUnknownError:
-        return UnknownError;
-    case WebContentDecryptionModuleExceptionClientError:
-    case WebContentDecryptionModuleExceptionOutputError:
-        // Currently no matching DOMException for these 2 errors.
-        // FIXME: Update DOMException to handle these if actually added to
-        // the EME spec.
-        return UnknownError;
-    }
-
-    ASSERT_NOT_REACHED();
-    return UnknownError;
-}
-
-SimpleContentDecryptionModuleResult::SimpleContentDecryptionModuleResult(ScriptState* scriptState)
-    : m_resolver(ScriptPromiseResolver::create(scriptState))
-{
-}
-
-SimpleContentDecryptionModuleResult::~SimpleContentDecryptionModuleResult()
-{
-}
-
-void SimpleContentDecryptionModuleResult::complete()
-{
-    m_resolver->resolve(V8UndefinedType());
-    m_resolver.clear();
-}
-
-void SimpleContentDecryptionModuleResult::completeWithSession(WebContentDecryptionModuleResult::SessionStatus status)
-{
-    ASSERT_NOT_REACHED();
-    completeWithDOMException(InvalidStateError, "Unexpected completion.");
-}
-
-void SimpleContentDecryptionModuleResult::completeWithError(WebContentDecryptionModuleException exceptionCode, unsigned long systemCode, const WebString& errorMessage)
-{
-    completeWithDOMException(WebCdmExceptionToExceptionCode(exceptionCode), errorMessage);
-}
-
-ScriptPromise SimpleContentDecryptionModuleResult::promise()
-{
-    return m_resolver->promise();
-}
-
-void SimpleContentDecryptionModuleResult::completeWithDOMException(ExceptionCode code, const String& errorMessage)
-{
-    m_resolver->reject(DOMException::create(code, errorMessage));
-    m_resolver.clear();
-}
-
-} // namespace blink