Remove stale strings from Data Saver disabled view

The Safebrowsing string is no longer applicable since SB is now
available to all users, not just Data Saver users.

Also remove the premium services string since this will be moved to the
Help Center page instead.

Bug: 889684
Change-Id: I974b922d7691bce3ff48640ff91fcf5f5fe645c2
Reviewed-on: https://chromium-review.googlesource.com/c/1257222Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595971}

chrome/android/java/res/xml/data_reduction_preferences_off.xml

@@ -10,10 +10,6 @@
         android:title="@string/data_reduction_benefits_description" />
     <org.chromium.chrome.browser.preferences.TextMessagePreference
         android:title="@string/data_reduction_description" />
-    <org.chromium.chrome.browser.preferences.TextMessagePreference
-        android:title="@string/safe_browsing_description" />
-    <org.chromium.chrome.browser.preferences.TextMessagePreference
-        android:title="@string/data_reduction_caveats_description" />
     <org.chromium.chrome.browser.preferences.LearnMorePreference
         android:key="data_reduction_learn_more"
         app:helpContext="@string/help_context_data_reduction" />

chrome/android/java/strings/android_chrome_strings.grd

@@ -1304,12 +1304,6 @@ To obtain new licenses, connect to the internet and play your downloaded content
       <message name="IDS_DATA_REDUCTION_USAGE_RESET_STATISTICS_CONFIRMATION_BUTTON" desc="Text to be displayed on the confirmation button to proceed with resetting the Data Reduction statistics.">
         Reset
       </message>
-      <message name="IDS_SAFE_BROWSING_DESCRIPTION" desc="Description text for safe browsing">
-        Chrome’s Safe Browsing system will also be used to detect malicious pages and protect you from phishing, malware, and harmful downloads.
-      </message>
-      <message name="IDS_DATA_REDUCTION_CAVEATS_DESCRIPTION" desc="Description text for usage caveats">
-        This feature may interfere with access to premium data services provided by your carrier.
-      </message>
 
       <!-- Data Saver Promo and FRE card -->
       <message name="IDS_DATA_REDUCTION_PROMO_TITLE" desc="The title for the promo inviting users to enable Data Saver" >