Revert of Update sync promo string in chrome://settings (patchset #1 id:100001...

Revert of Update sync promo string in chrome://settings (patchset #1 id:100001 of https://codereview.chromium.org/904513002)

Reason for revert:
165 Browser test crashing on Linux after the patch

Sample failure:
http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests%20%28dbg%29%281%29/builds/38668/steps/browser_tests/logs/OptionsWebUIExtendedTest.ShowPageWithHistory

Original issue's description:
> Update sync promo string in chrome://settings
>
> BUG=455273
> Committed: https://crrev.com/fdef2865f067f30e99f1f11b33d8811d98bf1e54
> Cr-Commit-Position: refs/heads/master@{#314875}

TBR=noms@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/884743004

Cr-Commit-Position: refs/heads/master@{#314903}

chrome/app/generated_resources.grd

@@ -12400,7 +12400,7 @@ Some features may be unavailable.  Please check that the profile exists and you
         </message>
         <if expr="not chromeos">
           <message name="IDS_SYNC_OVERVIEW" desc="The message that appears in the options dialog when sync has not been set up by the user.">
-            Sign in to get your tabs, bookmarks, history, and other settings on all your devices. You'll be automatically signed in to all your favorite Google services.
+            Sign in to <ph name="PRODUCT_NAME">$1<ex>Chrome</ex></ph> with your Google Account to save your personalized browser features to the web and access them from <ph name="PRODUCT_NAME">$1<ex>Chrome</ex></ph> on any computer. You'll also be automatically signed in to your favorite Google services.
           </message>
         </if>
         <message name="IDS_SYNC_START_SYNC_BUTTON_LABEL" desc="The label that appears on the sync button in the options dialog when sync has not been set up by the user.">