Use "default" instead of "normal" per UI review.

Bug: 823359
Change-Id: I9f5bb1ee23b32fb3522eaa4a2de9203fcbc805a6
Reviewed-on: https://chromium-review.googlesource.com/1069711Reviewed-by: Hector Carmona <hcarmona@chromium.org>
Commit-Queue: Katie Dektar <katie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#560852}

chrome/app/settings_strings.grdp

@@ -398,7 +398,7 @@
       <ph name="PERCENTAGE">$1<ex>120</ex>%</ph>
     </message>
     <message name="IDS_SETTINGS_DEFAULT_PERCENTAGE" desc="A number displayed as a percentage, which is the normal or default.">
-      <ph name="PERCENTAGE">$1<ex>120</ex>%</ph> (normal)
+      <ph name="PERCENTAGE">$1<ex>120</ex>%</ph> (default)
     </message>
     <message name="IDS_SETTINGS_TEXT_TO_SPEECH_PREVIEW_HEADING" desc="The heading for a section of the text-to-speech settings page where a user can preview text to speech">
       Preview

chrome/app/settings_strings_grdp/IDS_SETTINGS_DEFAULT_PERCENTAGE.png.sha1

+9fa1bdd6961f74498dc8365cade2af6db8f748af
\ No newline at end of file