Add initial page info implementation for safety tips

This CL updates the page info bubble to display information about safety tips that were
shown when the page was loaded. The safety tip status is stored in the visible security
state of the page and read by page info bubble when it's displayed.

Screenshot: https://drive.google.com/file/d/1r6kOdovGbqAdX0_mU11yDKYnVx0AiSGA/view?usp=sharing

Bug: 990929
Change-Id: Ia052f7941e538bc2d18526da0d9f3a7d71742f79
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1735900
Commit-Queue: Mustafa Emre Acer <[email protected]>
Reviewed-by: Christopher Thompson <[email protected]>
Reviewed-by: Joe DeBlasio <[email protected]>
Cr-Commit-Position: refs/heads/master@{#684839}
diff --git a/components/page_info_strings.grdp b/components/page_info_strings.grdp
index 532169e3..528271f 100644
--- a/components/page_info_strings.grdp
+++ b/components/page_info_strings.grdp
@@ -45,6 +45,9 @@
   <message name="IDS_PAGE_INFO_SAFETY_TIP_LEAVE_BUTTON" desc="Text of button to leave a suspicious page shown on the safety tip page info bubble.">
     Leave this site
   </message>
+  <message name="IDS_PAGE_INFO_SAFETY_TIP_SUMMARY" desc="Message to display in the page info bubble when the page you are on triggered a safety tip.">
+    Suspicious site
+  </message>
 
   <!-- Viewing file strings -->
   <message name="IDS_PAGE_INFO_FILE_PAGE" desc="Message to display in the page info bubble when the page the user has navigated to is a file:// page">