Update EME errors to use TypeError

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

Index: third_party/WebKit/Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.cpp
diff --git a/third_party/WebKit/Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.cpp b/third_party/WebKit/Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.cpp
index 67ddefcc2ce88b3337d2c891e33e5aed2c5baa82..8f692c82499fee968b34d5e05ecb0c2cc53f9c08 100644
--- a/third_party/WebKit/Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.cpp
+++ b/third_party/WebKit/Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.cpp
@@ -8,7 +8,7 @@
 #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 "bindings/core/v8/V8ThrowException.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/DOMTypedArray.h"
 #include "core/dom/ExceptionCode.h"
@@ -57,7 +57,7 @@ typedef Function<void()> SuccessCallback;
 typedef Function<void(ExceptionCode, const String&)> FailureCallback;
 
 // Represents the result used when setContentDecryptionModule() is called.
-// Calls |success| if result is resolved, |failure| is result is rejected.
+// Calls |success| if result is resolved, |failure| if result is rejected.
 class SetContentDecryptionModuleResult final : public ContentDecryptionModuleResult {
 public:
     SetContentDecryptionModuleResult(std::unique_ptr<SuccessCallback> success, std::unique_ptr<FailureCallback> failure)
@@ -97,6 +97,7 @@ public:
             result.appendNumber(systemCode);
             result.append(')');
         }
+
         (*m_failureCallback)(WebCdmExceptionToExceptionCode(code), result.toString());
     }
 
@@ -240,8 +241,13 @@ void SetMediaKeysHandler::fail(ExceptionCode code, const String& errorMessage)
     // Make sure attaching media keys value is false.
     DCHECK(!HTMLMediaElementEncryptedMedia::from(*m_element).m_isAttachingMediaKeys);
 
-    // Reject promise with an appropriate error.
-    reject(DOMException::create(code, errorMessage));
+    // Reject promise with an appropriate error. Since |code| may represent
+    // a TypeError, use V8ThrowException::createDOMException() to handle it.
+    if (getScriptState()->contextIsValid()) {
+        ScriptState::Scope scope(getScriptState());
+        v8::Isolate* isolate = getScriptState()->isolate();
+        reject(V8ThrowException::createDOMException(isolate, code, errorMessage));
+    }
 }
 
 void SetMediaKeysHandler::clearFailed(ExceptionCode code, const String& errorMessage)