[omnibox] Update the "Edit search engines..." string to match Settings

This CL makes the context menu "Edit search engines..." command match
Settings. See the bug.

Bug: 1105378
Change-Id: I5334a801862b8937e2b753b58de8baa216cce77b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2422462
Commit-Queue: Tommy Li <tommycli@chromium.org>
Reviewed-by: Orin Jaworski <orinj@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809076}

chrome/app/generated_resources.grd

@@ -1352,14 +1352,14 @@ are declared in tools/grit/grit_rule.gni.
       </message>
       <if expr="not use_titlecase">
         <message name="IDS_EDIT_SEARCH_ENGINES"
-                 desc="Title of the popup menu item for editing search engines">
-          &amp;Edit search engines...
+                 desc="Title of the popup menu item that takes the user to 'Manage search engines' in Settings.">
+          &amp;Manage search engines...
         </message>
       </if>
       <if expr="use_titlecase">
         <message name="IDS_EDIT_SEARCH_ENGINES"
-                 desc="In Title Case: Title of the popup menu item for editing search engines">
-          &amp;Edit Search Engines...
+                 desc="In Title Case: Title of the popup menu item that takes the user to 'Manage search engines' in Settings.">
+          &amp;Manage Search Engines...
         </message>
       </if>
 

chrome/app/generated_resources_grd/IDS_EDIT_SEARCH_ENGINES.png.sha1

+ddee1690538f0554716576c8831c671f036c1640
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