Add/Update diagnostic links on SB interstitials

1. The diagnostic link is included in the detail section in malware and
UwS interstitial, but somehow is missing from the phishing
interstitial. This change fixes this problem.
2. This change also migrates the diagnostic link into a new URL

Bug: 758809
Change-Id: I3dad307bacd7fa0030587138f4bdeb0578652c4b
Reviewed-on: https://chromium-review.googlesource.com/754057
Commit-Queue: Jialiu Lin <[email protected]>
Reviewed-by: Nate Fischer <[email protected]>
Reviewed-by: Nathan Parker <[email protected]>
Cr-Commit-Position: refs/heads/master@{#516498}
diff --git a/components/security_interstitials_strings.grdp b/components/security_interstitials_strings.grdp
index c39d99d..5561c08 100644
--- a/components/security_interstitials_strings.grdp
+++ b/components/security_interstitials_strings.grdp
@@ -283,7 +283,7 @@
     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). <ph name="BEGIN_LEARN_MORE_LINK">&lt;a href="#" id="learn-more-link"&gt;</ph>Learn more<ph name="END_LEARN_MORE_LINK">&lt;/a&gt;</ph>
   </message>
   <message name="IDS_PHISHING_V4_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>. Phishing sites pretend to be other websites to trick you.
+  Google Safe Browsing recently <ph name="BEGIN_LINK">&lt;a href="#" id="diagnostic-link"&gt;</ph>detected phishing<ph name="END_LINK">&lt;/a&gt;</ph> on <ph name="SITE">$1<ex>example.com</ex></ph>. Phishing sites pretend to be other websites to trick you.
   </message>
   <message name="IDS_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>.