Improve media-related exception messages

LayoutTests/media/track/track-cue-mutable-expected.txt

 Tests modifying attributes of a VTTCue
 
 ** Test initial values.
 RUN(textCue = cues.getCueById('1'))
 EXPECTED (textCue.startTime == '0') OK
 EXPECTED (textCue.endTime == '1') OK
 EXPECTED (textCue.pauseOnExit == 'false') OK
 EXPECTED (textCue.vertical == '') OK
 EXPECTED (textCue.snapToLines == 'true') OK
 EXPECTED (textCue.line == '-1') OK
@@ skipping 29 matching lines @@
 RUN(textCue.line = 42)
 EXPECTED (textCue.line == '42') OK
 RUN(textCue.snapToLines = true)
 RUN(textCue.line = -2)
 EXPECTED (textCue.line == '-2') OK
 RUN(textCue.line = 102)
 EXPECTED (textCue.line == '102') OK
 
 On setting, if the new value is negative or greater than 100, then throw an IndexSizeError exception. Otherwise, set the text track cue text position to the new value.
 http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#dom-texttrackcue-line
-TEST(textCue.position = -200) THROWS(DOMException.INDEX_SIZE_ERR: Failed to set the 'position' property on 'VTTCue': The value provided (-200) is not between 0 and 100.) OK
-TEST(textCue.position = 110) THROWS(DOMException.INDEX_SIZE_ERR: Failed to set the 'position' property on 'VTTCue': The value provided (110) is not between 0 and 100.) OK
+TEST(textCue.position = -200) THROWS(DOMException.INDEX_SIZE_ERR: Failed to set the 'position' property on 'VTTCue': The value provided (-200) is outside the range [0, 100].) OK
+TEST(textCue.position = 110) THROWS(DOMException.INDEX_SIZE_ERR: Failed to set the 'position' property on 'VTTCue': The value provided (110) is outside the range [0, 100].) OK
 RUN(textCue.position = 11)
 EXPECTED (textCue.position == '11') OK
 
 On setting, if the new value is negative or greater than 100, then throw an IndexSizeError exception. Otherwise, set the text track cue size to the new value.
 http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#dom-texttrackcue-size
-TEST(textCue.size = -200) THROWS(DOMException.INDEX_SIZE_ERR: Failed to set the 'size' property on 'VTTCue': The value provided (-200) is not between 0 and 100.) OK
-TEST(textCue.size = 110) THROWS(DOMException.INDEX_SIZE_ERR: Failed to set the 'size' property on 'VTTCue': The value provided (110) is not between 0 and 100.) OK
+TEST(textCue.size = -200) THROWS(DOMException.INDEX_SIZE_ERR: Failed to set the 'size' property on 'VTTCue': The value provided (-200) is outside the range [0, 100].) OK
+TEST(textCue.size = 110) THROWS(DOMException.INDEX_SIZE_ERR: Failed to set the 'size' property on 'VTTCue': The value provided (110) is outside the range [0, 100].) OK
 RUN(textCue.size = 57)
 EXPECTED (textCue.size == '57') OK
 
 On setting, the text track cue alignment must be set to the value ... is a case-sensitive match for the new value, if any. If none of the values match, then the user agent must instead throw a SyntaxError exception.
 http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#dom-texttrackcue-align
 TEST(textCue.align = 'End') THROWS(DOMException.SYNTAX_ERR: Failed to set the 'align' property on 'VTTCue': The value provided ('End') is invalid. Only 'start', 'middle', 'end', 'left', and 'right' are accepted.) OK
 EXPECTED (textCue.align == 'middle') OK
 RUN(textCue.align = 'end')
 EXPECTED (textCue.align == 'end') OK
 
 END OF TEST