Use sentence case for bookmark-editor title

Covers widget dialog title sentence case for
bookmark_component_strings.grdp.

TBR=blundell@chromium.org

Bug: chromium:810111
Change-Id: I7e0fda476aaaf43d7906a50e302fd4ccc9227142
Reviewed-on: https://chromium-review.googlesource.com/917424Reviewed-by: Rachel Blum <groby@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537186}

components/bookmark_component_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <grit-part>
+  <message name="IDS_BOOKMARK_EDITOR_TITLE" desc="Title of the window the bookmark editor is in.">
+    Edit bookmark
+  </message>
   <message name="IDS_BOOKMARK_EDITOR_NEW_FOLDER_NAME" desc="Name for newly created groups">
     New folder
   </message>
@@ -7,9 +10,6 @@
     <message name="IDS_BOOKMARK_BUBBLE_REMOVE_BOOKMARK" desc="Title of the button for removing the bookmark">
       Remove
     </message>
-    <message name="IDS_BOOKMARK_EDITOR_TITLE" desc="Title of the window the bookmark editor is in.">
-      Edit bookmark
-    </message>
     <message name="IDS_BOOKMARK_MANAGER_NAME_INPUT_PLACE_HOLDER" desc="Text to show in the URL input field when editing or creating bookmarks.">
       Name
     </message>
@@ -21,9 +21,6 @@
     <message name="IDS_BOOKMARK_BUBBLE_REMOVE_BOOKMARK" desc="In Title Case: Title of the button for removing the bookmark">
       Remove
     </message>
-    <message name="IDS_BOOKMARK_EDITOR_TITLE" desc="In Title Case: Title of the window the bookmark editor is in.">
-      Edit Bookmark
-    </message>
     <message name="IDS_BOOKMARK_MANAGER_NAME_INPUT_PLACE_HOLDER" desc="In Title Case: Text to show in the URL input field when editing or creating bookmarks.">
       Name
     </message>