Have SourceBuffer throw TypeError for non-finite doubles.

Source/modules/mediasource/SourceBuffer.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 159 matching lines @@
 
 double SourceBuffer::timestampOffset() const
 {
     return m_timestampOffset;
 }
 
 void SourceBuffer::setTimestampOffset(double offset, ExceptionState& exceptionState)
 {
     // Enforce throwing an exception on restricted double values.
     if (!std::isfinite(offset)) {
-        exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::notAFiniteNumber(offset));
+        exceptionState.throwTypeError(ExceptionMessages::notAFiniteNumber(offset));
         return;
     }
 
     // Section 3.1 timestampOffset attribute setter steps.
     // 1. Let new timestamp offset equal the new value being assigned to this attribute.
     // 2. If this object has been removed from the sourceBuffers attribute of the parent media source, then throw an
     //    InvalidStateError exception and abort these steps.
     // 3. If the updating attribute equals true, then throw an InvalidStateError exception and abort these steps.
     if (throwExceptionIfRemovedOrUpdating(isRemoved(), m_updating, exceptionState))
         return;
@@ skipping 15 matching lines @@
 }
 
 double SourceBuffer::appendWindowStart() const
 {
     return m_appendWindowStart;
 }
 
 void SourceBuffer::setAppendWindowStart(double start, ExceptionState& exceptionState)
 {
     // Enforce throwing an exception on restricted double values.
-    if (std::isnan(start)
-        || start == std::numeric_limits<double>::infinity()
-        || start == -std::numeric_limits<double>::infinity()) {
-        exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::notAFiniteNumber(start));
+    if (!std::isfinite(start)) {
+        exceptionState.throwTypeError(ExceptionMessages::notAFiniteNumber(start));
         return;
     }
 
     // Section 3.1 appendWindowStart attribute setter steps.
     // 1. If this object has been removed from the sourceBuffers attribute of the parent media source then throw an
     //    InvalidStateError exception and abort these steps.
     // 2. If the updating attribute equals true, then throw an InvalidStateError exception and abort these steps.
     if (throwExceptionIfRemovedOrUpdating(isRemoved(), m_updating, exceptionState))
         return;
 
@@ skipping 479 matching lines @@
     appendStreamDone(false);
 }
 
 void SourceBuffer::trace(Visitor* visitor)
 {
     visitor->trace(m_source);
     visitor->trace(m_stream);
 }
 
 } // namespace WebCore