Move all Page Info strings into page_info_strings.grdp

This CL does the following:
- Move strings into page_info_strings.grdp
- Organize the strings into sections with comment headings, based on the order and role they have in the UI.
- Remove old "chrome/grit/generated_resources.h" includes in C++ files where possible.
- Replace IDS_PAGE_INFO_TITLE_SITE_DATA with IDS_PAGE_INFO_COOKIES (crbug.com/716296)
- Remove dead strings and their associated code (crbug.com/709701)
- Rename remaining IDS_PAGEINFO_* strings to IDS_PAGE_INFO_* (crbug.com/716305)
- Unfork IDS_PAGE_INFO_NON_SECURE_TRANSPORT into IDS_PAGEINFO_NOT_SECURE_SUMMARY

BUG=663975, 709701, 716296, 716296, 716305
[email protected], [email protected], [email protected]

Review-Url: https://codereview.chromium.org/2849713003
Cr-Commit-Position: refs/heads/master@{#469190}
diff --git a/components/components_chromium_strings.grd b/components/components_chromium_strings.grd
index 7899407f..21ea9785 100644
--- a/components/components_chromium_strings.grd
+++ b/components/components_chromium_strings.grd
@@ -208,11 +208,15 @@
         Chromium is made possible by the <ph name="BEGIN_LINK_CHROMIUM">&lt;a target="_blank" href="$1"&gt;</ph>Chromium<ph name="END_LINK_CHROMIUM">&lt;/a&gt;</ph> open source project and other <ph name="BEGIN_LINK_OSS">&lt;a target="_blank" href="$2"&gt;</ph>open source software<ph name="END_LINK_OSS">&lt;/a&gt;</ph>.
       </message>
 
-      <!-- Page Info bubble -->
+      <!-- Page Info -->
       <message name="IDS_PAGE_INFO_INTERNAL_PAGE" desc="Message to display in the page info bubble when the page you are on is a chrome:// page or about:something.">
         You're viewing a secure Chromium page
       </message>
+      <message name="IDS_PAGE_INFO_SECURITY_TAB_SECURE_IDENTITY_VERIFIED" desc="The text of the identity section when the page is secure and uses a valid certificate">
+        Chromium verified that <ph name="ISSUER">$1<ex>VeriSign</ex></ph> issued this website's certificate.
+      </message>
 
+      <!-- Session Crash -->
       <message name="IDS_SESSION_CRASHED_VIEW_MESSAGE" desc="Message shown when the last session didn't exit cleanly.">
         Chromium didn't shut down correctly.
       </message>