Updates Zoom bubble layout and adds +/- buttons

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 40001d304144f9c6d2ba64817de5bec54ade4750..9da3534e7cbeb265996b6a06463bc095565b42f4 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -5442,21 +5442,9 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_TOOLTIP_ZOOM_EXTENSION_ICON" desc="The tooltip for the extension icon in the zoom bubble">
         This page was zoomed by the "<ph name="NAME">$1<ex>Google Cast</ex></ph>" extension
       </message>
-      <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" desc="The 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">
@@ -5511,6 +5499,9 @@ the Bookmarks menu.">
       <message name="IDS_ACCNAME_CLOSE_TAB" desc="The accessible name for the button that is used to close a specific tab.">
         Close <ph name="TAB_NAME">$1<ex>Google Search</ex></ph>
       </message>
+      <message name="IDS_ACCNAME_ZOOM_SET_DEFAULT" desc="The accessible description of the Reset button in the Zoom bubble.">
+        Reset to default zoom level
+      </message>
 
       <!-- Browser Hung Plugin Detector -->
       <if expr="is_win">