[MD settings] moving settings strings to a separate grd file

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 bed132246f5816c93dbae699099771002ee5d250..a8165545422d4d66369d1e007ef1f3d821946cc4 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -191,9 +191,6 @@ are declared in build/common.gypi.
       <!-- Bookmarks specific strings -->
       <part file="bookmarks_strings.grdp" />
 
-      <!-- Settings specific strings -->
-      <part file="settings_strings.grdp" />

[newt (away), 2015/09/30 21:42:10]

Note that these strings will no longer be translated. So if anyone modifies an
existing string in settings_strings.grdp, the next release will be missing
translations for that string.

A safer alternative is to add new strings in a new grdp file, and to keep the
existing strings running through the translation process.

[dschuyler, 2015/09/30 22:37:27]

That's what we're going for :)
We kind of did that, but the grdp file already got created.  The
settings_strings.grdp files is the new file :)  The existing strings are in
other, older files (that will be culled at a later date).

-
       <!-- ChromeOS-specific strings -->
       <if expr="chromeos">
         <part file="chromeos_strings.grdp" />