Upstream forked safe browsing string on iOS.

ios/chrome/app/strings/ios_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definition of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, is_ios and is_posix are
 available for making strings OS specific.  Other platform defines such as
 use_titlecase are declared in build/common.gypi.
 
 The strings in this file are specific to iOS, thus is_ios will be true and
 all other OS specific variables will be false.
@@ skipping 200 matching lines @@
       </message>
       <message name="IDS_IOS_GENERATE_PASSWORD_LABEL" desc="Input accessory view label to generate a password. [Length: 20em] [iOS only]">
         Generate Password
       </message>
       <message name="IDS_IOS_GENERATED_PASSWORD_PROMPT_DESCRIPTION" desc="The explanation text for the generated password prompt. [iOS only]">
         Chrome will store this in your <ph name="BEGIN_LINK">BEGIN_LINK</ph>Google saved passwords<ph name="END_LINK">END_LINK</ph> and autofill it for you so you don't have to remember it yourself.
       </message>
       <message name="IDS_IOS_GENERATED_PASSWORD_PROMPT_TITLE" desc="The text of the button that accepts the generated password. [Length: 20em] [iOS only]">
         Password Generated by Chrome
       </message>
+
+      <!-- Safe Browsing -->
+      <!-- - harmful download interstitials -->
+      <message name="IDS_IOS_HARMFUL_V3_EXPLANATION_PARAGRAPH" desc="The explanation of why Safe Browsing has blocked the page.">
+        Google Safe Browsing recently <ph name="BEGIN_LINK">&lt;a href="#" id="help-link"&gt;</ph>found harmful programs<ph name="END_LINK">&lt;/a&gt;</ph> on <ph name="SITE">$1<ex>example.com</ex></ph>.
+      </message>
+      <message name="IDS_IOS_HARMFUL_V3_HEADING" desc="The large heading at the top of the social engineering interstitial.">
+        The site ahead contains harmful programs
+      </message>
+      <message name="IDS_IOS_HARMFUL_V3_PRIMARY_PARAGRAPH" desc="Mobile: The primary explanatory paragraph for the social engineering interstitial.">
+        Attackers on <ph name="BEGIN_BOLD">&lt;strong&gt;</ph><ph name="SITE">$1<ex>example.com</ex></ph><ph name="END_BOLD">&lt;/strong&gt;</ph> might attempt to trick you into installing programs that harm your browsing experience (for example, by changing your homepage or showing extra ads on sites you visit).
+      </message>
+      <message name="IDS_IOS_HARMFUL_V3_PROCEED_PARAGRAPH" desc="The paragraph that lets the user skip the warning.">
+        If you understand the risks to your security, you may <ph name="BEGIN_LINK">&lt;a href="#" id="proceed-link"&gt;</ph>visit this site<ph name="END_LINK">&lt;/a&gt;</ph> before the harmful programs have been removed.
+      </message>
+      <!-- - malware interstitials -->
+      <message name="IDS_IOS_MALWARE_V3_EXPLANATION_PARAGRAPH" desc="The explanation of why Safe Browsing has blocked the page.">
+        Google Safe Browsing recently <ph name="BEGIN_LINK">&lt;a href="#" id="help-link"&gt;</ph>detected malware<ph name="END_LINK">&lt;/a&gt;</ph> on <ph name="SITE">$1<ex>example.com</ex></ph>. Websites that are normally safe are sometimes infected with malware.
+      </message>
+      <message name="IDS_IOS_MALWARE_V3_EXPLANATION_PARAGRAPH_SUBRESOURCE" desc="The explanation of why Safe Browsing has blocked the page.">
+        Google Safe Browsing recently <ph name="BEGIN_LINK">&lt;a href="#" id="help-link"&gt;</ph>detected malware<ph name="END_LINK">&lt;/a&gt;</ph> on <ph name="SITE">$1<ex>example.com</ex></ph>. Websites that are normally safe are sometimes infected with malware. The malicious content comes from <ph name="SUBRESOURCE_HOST">$2<ex>evil.com</ex></ph>, a known malware distributor.
+      </message>
+      <message name="IDS_IOS_MALWARE_V3_HEADING" desc="The large heading at the top of the malware interstitial.">
+        The site ahead contains malware
+      </message>
+      <message name="IDS_IOS_MALWARE_V3_PRIMARY_PARAGRAPH" desc="Mobile: The primary explanatory paragraph for the malware interstitial.">
+        Attackers currently on <ph name="BEGIN_BOLD">&lt;strong&gt;</ph><ph name="SITE">$1<ex>example.com</ex></ph><ph name="END_BOLD">&lt;/strong&gt;</ph> might attempt to install dangerous apps on your device that steal or delete your information (for example, photos, passwords, messages, and credit cards).
+      </message>
+      <message name="IDS_IOS_MALWARE_V3_PROCEED_PARAGRAPH" desc="The paragraph that lets the user skip the warning.">
+        If you understand the risks to your security, you may <ph name="BEGIN_LINK">&lt;a href="#" id="proceed-link"&gt;</ph>visit this unsafe site<ph name="END_LINK">&lt;/a&gt;</ph> before the dangerous programs have been removed.
+      </message>
+      <!-- - phishing interstitials -->
+      <message name="IDS_IOS_PHISHING_V3_EXPLANATION_PARAGRAPH" desc="The explanation of why Safe Browsing has blocked the page.">
+      Google Safe Browsing recently detected phishing on <ph name="SITE">$1<ex>example.com</ex></ph>. <ph name="BEGIN_LINK">&lt;a href="#" id="help-link"&gt;</ph>Phishing sites<ph name="END_LINK">&lt;/a&gt;</ph> pretend to be other websites to trick you.
+      </message>
+      <message name="IDS_IOS_PHISHING_V3_HEADING" desc="The large heading at the top of the phishing interstitial.">
+        Phishing attack ahead
+      </message>
+      <message name="IDS_IOS_PHISHING_V3_PRIMARY_PARAGRAPH" desc="The primary explanatory paragraph for the malware interstitial.">
+        Attackers on <ph name="BEGIN_BOLD">&lt;strong&gt;</ph><ph name="SITE">$1<ex>example.com</ex></ph><ph name="END_BOLD">&lt;/strong&gt;</ph> might try to trick you to steal your information (for example, passwords, messages, or credit cards).
+      </message>
+      <message name="IDS_IOS_PHISHING_V3_PROCEED_PARAGRAPH" desc="The paragraph that lets the user skip the warning.">
+        If you understand the risks to your security, you may <ph name="BEGIN_LINK">&lt;a href="#" id="proceed-link"&gt;</ph>visit this unsafe site<ph name="END_LINK">&lt;/a&gt;</ph>.
+      </message>
+      <message name="IDS_IOS_PHISHING_V4_HEADING" desc="The large heading at the top of the phishing interstitial.">
+        Deceptive site ahead
+      </message>
+      <message name="IDS_IOS_PHISHING_V4_PRIMARY_PARAGRAPH" desc="The primary explanatory paragraph for the malware interstitial.">
+        Attackers on <ph name="BEGIN_BOLD">&lt;strong&gt;</ph><ph name="SITE">$1<ex>example.com</ex></ph><ph name="END_BOLD">&lt;/strong&gt;</ph> may trick you into doing something dangerous like installing software or revealing your personal information (for example, passwords, phone numbers, or credit cards).
+      </message>
+      <message name="IDS_IOS_PHISHING_V4_PROCEED_AND_REPORT_PARAGRAPH" desc="The paragraph that lets the user skip the warning.">
+        You can <ph name="BEGIN_ERROR_LINK">&lt;a href="#" id="report-error-link"&gt;</ph>report a detection problem<ph name="END_ERROR_LINK">&lt;/a&gt;</ph> or, if you understand the risks to your security, <ph name="BEGIN_LINK">&lt;a href="#" id="proceed-link"&gt;</ph>visit this unsafe site<ph name="END_LINK">&lt;/a&gt;</ph>.
+      </message>
+      <!-- - shared strings -->
+      <message name="IDS_IOS_SAFEBROWSING_OVERRIDABLE_SAFETY_BUTTON" desc="The text for the button that takes the user back to the previous page.">
+        Back to safety
+      </message>
+      <message name="IDS_IOS_SAFEBROWSING_V3_CLOSE_DETAILS_BUTTON" desc="The text for the button that hides the details.">
+        Hide details
+      </message>
+      <message name="IDS_IOS_SAFEBROWSING_V3_OPEN_DETAILS_BUTTON" desc="The text for the button that expands the details.">
+        Details
+      </message>
+      <message name="IDS_IOS_SAFEBROWSING_V3_TITLE" desc="The tab title for the Safe Browsing interstitials.">
+        Security error
+      </message>
+
     </messages>
   </release>
 </grit>