Should throw TypeError instead of TypeMismatchError (modules)

Source/modules/mediastream/RTCSessionDescription.cpp

Index: Source/modules/mediastream/RTCSessionDescription.cpp
diff --git a/Source/modules/mediastream/RTCSessionDescription.cpp b/Source/modules/mediastream/RTCSessionDescription.cpp
index 33dad9a09598781558a95acf30884c98e07c7570..4e3f45ff4f413649c532d01960ac9bad6f02bb79 100644
--- a/Source/modules/mediastream/RTCSessionDescription.cpp
+++ b/Source/modules/mediastream/RTCSessionDescription.cpp
@@ -53,7 +53,7 @@ PassRefPtr<RTCSessionDescription> RTCSessionDescription::create(const Dictionary
     String type;
     bool ok = descriptionInitDict.get("type", type);
     if (ok && !verifyType(type)) {
-        exceptionState.throwDOMException(TypeMismatchError, constructIllegalTypeExceptionMessage(type));
+        exceptionState.throwDOMException(TypeError, constructIllegalTypeExceptionMessage(type));
         return nullptr;
     }
 
@@ -84,7 +84,7 @@ void RTCSessionDescription::setType(const String& type, ExceptionState& exceptio
     if (verifyType(type))
         m_webSessionDescription.setType(type);
     else
-        exceptionState.throwDOMException(TypeMismatchError, constructIllegalTypeExceptionMessage(type));
+        exceptionState.throwDOMException(TypeError, constructIllegalTypeExceptionMessage(type));
 }
 
 String RTCSessionDescription::sdp()