Add support for Android spellcheck menu in Chrome/WebViews

content/public/android/java/strings/android_content_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1" output_all_resource_defines="false">
   <outputs>
     <output filename="values-am/android_content_strings.xml" lang="am" type="android" />
     <output filename="values-ar/android_content_strings.xml" lang="ar" type="android" />
     <output filename="values-bg/android_content_strings.xml" lang="bg" type="android" />
     <output filename="values-ca/android_content_strings.xml" lang="ca" type="android" />
     <output filename="values-cs/android_content_strings.xml" lang="cs" type="android" />
     <output filename="values-da/android_content_strings.xml" lang="da" type="android" />
     <output filename="values-de/android_content_strings.xml" lang="de" type="android" />
@@ skipping 84 matching lines @@
     <messages fallback_to_english="true">
       <message name="IDS_ACTIONBAR_SHARE" desc="Contextual action bar item for sharing a block of text via email, or other method. [CHAR-LIMIT=24]">
         Share
       </message>
       <message name="IDS_ACTIONBAR_WEB_SEARCH" desc="Contextual action bar item for using the selected text in a internet search. [CHAR-LIMIT=24]">
         Web search
       </message>
       <message name="IDS_ACTIONBAR_TEXTSELECTION_TITLE" desc="Title of the text selection contextual action bar on tablets. [CHAR-LIMIT=30]">
         Text selection
       </message>
+      <message name="IDS_ADD_TO_DICTIONARY" desc="Button that adds the currently highlighted word to the spellcheck dictionary">
+        Add to dictionary
+      </message>
+      <message name="IDS_DELETE_TEXT" desc="Button that deletes the currently highlighted text">
+        Delete
+      </message>
       <message name="IDS_MEDIA_PLAYER_ERROR_TITLE" desc="Title of dialog explaining that a video cannot be played due to an error [CHAR-LIMIT=32]">
         Cannot play video
       </message>
       <message name="IDS_MEDIA_PLAYER_ERROR_TEXT_INVALID_PROGRESSIVE_PLAYBACK" desc="Dialog text explaining why a video cannot be played">
         Sorry, this video is not valid for streaming to this device.
       </message>
       <message name="IDS_MEDIA_PLAYER_ERROR_TEXT_UNKNOWN" desc="Dialog text explaining that a video cannot be played">
         Sorry, this video cannot be played.
       </message>
       <message name="IDS_MEDIA_PLAYER_ERROR_BUTTON" desc="OK button to dismiss an error dialog [CHAR-LIMIT=16]">
         OK
       </message>
       <message name="IDS_PROFILER_STARTED_TOAST" desc="Toast notifying the user that profiler started">
         Profiler started
       </message>
       <message name="IDS_PROFILER_STOPPED_TOAST" desc="Toast notifying the user that profiler results were written to a file">
         Profiler finished. Results are in <ph name="FILENAME">%1$s<ex>output.txt</ex></ph>.
       </message>
       <message name="IDS_PROFILER_NO_STORAGE_TOAST" desc="Toast notifying the user that we can't start profiler because there's no external storage">
         Can't start profiler because external storage is not ready
       </message>
       <message name="IDS_PROFILER_ERROR_TOAST" desc="Toast notifying the user that we failed to start profiler">
         Failed to start profiler
       </message>
     </messages>
   </release>
 </grit>