Update Safe Browsing summary in no protection state.

before: http://screen/JteFt6rNkc5
after: http://screen/wnMPBjYRwbh

Bug: 1097310
Change-Id: I7e6b98f9510dfc580f59cbc20927da3561d15ca7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2342282Reviewed-by: Varun Khaneja <vakh@chromium.org>
Commit-Queue: Xinghui Lu <xinghuilu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#796659}

chrome/browser/safe_browsing/android/java/src/org/chromium/chrome/browser/safe_browsing/settings/SecuritySettingsFragment.java

@@ -52,7 +52,7 @@ public class SecuritySettingsFragment extends PreferenceFragmentCompat
             safeBrowsingStateString =
                     context.getString(R.string.safe_browsing_standard_protection_title);
         } else if (safeBrowsingState == SafeBrowsingState.NO_SAFE_BROWSING) {
-            safeBrowsingStateString = context.getString(R.string.safe_browsing_no_protection_title);
+            return context.getString(R.string.prefs_safe_browsing_no_protection_summary);
         } else {
             assert false : "Should not be reached";
         }

chrome/browser/ui/android/strings/android_chrome_strings.grd

@@ -971,6 +971,9 @@ Your Google account may have other forms of browsing history like searches and a
       <message name="IDS_PREFS_SAFE_BROWSING_SUMMARY" desc="Summary for the Safe Browsing preferences.">
         <ph name="SAFE_BROWSING_MODE">%1$s<ex>Enhanced protection</ex></ph> is on
       </message>
+      <message name="IDS_PREFS_SAFE_BROWSING_NO_PROTECTION_SUMMARY" desc="Summary for the Safe Browsing preferences when Safe Browsing is off.">
+        Safe Browsing is off
+      </message>
       <message name="IDS_PREFS_SECTION_SAFE_BROWSING_TITLE" desc="Title for the Safe Browsing section. [CHAR-LIMIT=32]">
         Safe Browsing
       </message>

chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_PREFS_SAFE_BROWSING_NO_PROTECTION_SUMMARY.png.sha1

+fe1ba00cfc97c40b26524a65038f443022185cf6
\ No newline at end of file