Remove SSLStatus::security_style member and content::SecurityStyle

components/security_state/security_state_model.h

Index: components/security_state/security_state_model.h
diff --git a/components/security_state/security_state_model.h b/components/security_state/security_state_model.h
index df7eba5c258e965f8ddfe7de617bc73c288d0157..9bcfbc6ccd554e0b5a53a979848dd361e2d85331 100644
--- a/components/security_state/security_state_model.h
+++ b/components/security_state/security_state_model.h
@@ -146,9 +146,7 @@ class SecurityStateModel {
     ~VisibleSecurityState();
     bool operator==(const VisibleSecurityState& other) const;
     GURL url;
-    // The baseline SecurityLevel describing the page or request before
-    // any SecurityStateModel policies have been applied.
-    SecurityLevel initial_security_level;
+
     // True if the page fails the browser's malware or phishing checks.
     bool fails_malware_check;