Update EME errors to use TypeError

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

Index: third_party/WebKit/Source/modules/encryptedmedia/ContentDecryptionModuleResultPromise.cpp
diff --git a/third_party/WebKit/Source/modules/encryptedmedia/ContentDecryptionModuleResultPromise.cpp b/third_party/WebKit/Source/modules/encryptedmedia/ContentDecryptionModuleResultPromise.cpp
index c65194b436d3af6e2f5e610de4ec11bc95a8db51..64e7015b48dbef41ca9d6833bd15af67115c9c75 100644
--- a/third_party/WebKit/Source/modules/encryptedmedia/ContentDecryptionModuleResultPromise.cpp
+++ b/third_party/WebKit/Source/modules/encryptedmedia/ContentDecryptionModuleResultPromise.cpp
@@ -6,6 +6,7 @@
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptState.h"
+#include "bindings/core/v8/V8Binding.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/ExecutionContextTask.h"
@@ -33,6 +34,10 @@ ExceptionCode WebCdmExceptionToExceptionCode(WebContentDecryptionModuleException
         // FIXME: Update DOMException to handle these if actually added to
         // the EME spec.
         return UnknownError;
+    case WebContentDecryptionModuleExceptionTypeError:
+        // This is not a DOMException but rather a seperate TypeError. Use a
+        // different ExceptionCode for this so it can be checked for.
+        return TypeMismatchError;
     }
 
     NOTREACHED();
@@ -103,7 +108,16 @@ void ContentDecryptionModuleResultPromise::reject(ExceptionCode code, const Stri
 
 void ContentDecryptionModuleResultPromise::rejectInternal(ExceptionCode code, const String& errorMessage)
 {
-    m_resolver->reject(DOMException::create(code, errorMessage));
+    if (code == TypeMismatchError) {
+        if (m_resolver->getScriptState()->contextIsValid()) {
+            ScriptState::Scope scope(m_resolver->getScriptState());
+            v8::Isolate* isolate = m_resolver->getScriptState()->isolate();
+            m_resolver->reject(v8::Exception::TypeError(v8String(isolate, errorMessage)));
+        }
+    } else {
+        m_resolver->reject(DOMException::create(code, errorMessage));
+    }
+
     m_resolver.clear();
 }