Updates Zoom bubble layout and adds +/- buttons

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 5575 matching lines @@
       <if expr="not use_titlecase">
         <message name="IDS_ZOOM_SET_DEFAULT" desc="The text label of a button which, when clicked, returns the page to default zoom">
           Reset to default
         </message>
       </if>
       <if expr="use_titlecase">
         <message name="IDS_ZOOM_SET_DEFAULT" desc="In Title Case: The text label of a button which, when clicked, returns the page to default zoom">
           Reset to Default
         </message>
       </if>
-      <if expr="is_macosx">
-        <message name="IDS_ZOOM_SET_DEFAULT_SHORT" desc="In Title Case: The short text label of a button which, when clicked, returns the page to default zoom">
-          Reset
-        </message>
-      </if>
+      <message name="IDS_ZOOM_SET_DEFAULT_SHORT" desc="In Title Case: The short text label of a button which, when clicked, returns the page to default zoom">
+        Reset
+      </message>
 
       <!--Accessible name/action strings-->
       <message name="IDS_ACCESSIBLE_INCOGNITO_WINDOW_TITLE_FORMAT" desc="The format for the accessible title of an incognito window">
         <ph name="WINDOW_TITLE">$1</ph> (Incognito)
       </message>
       <message name="IDS_ACCNAME_APP_UPGRADE_RECOMMENDED" desc="The accessible name for the app menu when software update is available.">
         <ph name="ACCNAME_APP">$1<ex>Chrome</ex></ph> (Update is available)
       </message>
       <message name="IDS_ACCNAME_FULLSCREEN" desc="The accessible name of the fullscreen button in the new merged menu">
         Full screen
@@ skipping 6739 matching lines @@
       Your downloads appear here
     </message>
 
     <!-- Automation info bar -->
     <message name="IDS_CONTROLLED_BY_AUTOMATION" desc="Message shown when the browser session is being controlled by an automated test.">
       Chrome is being controlled by automated test software.
     </message>
   </messages>
  </release>
 </grit>