Move SecurityLevel into a class of its own

chrome/browser/ui/android/toolbar/toolbar_model_android.cc

Index: chrome/browser/ui/android/toolbar/toolbar_model_android.cc
diff --git a/chrome/browser/ui/android/toolbar/toolbar_model_android.cc b/chrome/browser/ui/android/toolbar/toolbar_model_android.cc
index cd4ffb862c969e57a0e3d42d90b7f67081d668d5..9bcf2b162f75508c495a64d47751da7fe5f69f5a 100644
--- a/chrome/browser/ui/android/toolbar/toolbar_model_android.cc
+++ b/chrome/browser/ui/android/toolbar/toolbar_model_android.cc
@@ -83,16 +83,6 @@ jlong Init(JNIEnv* env, jobject obj, jobject delegate) {
   return reinterpret_cast<intptr_t>(toolbar_model);
 }
 
-// static
-jint GetSecurityLevelForWebContents(JNIEnv* env,
-                                    jclass jcaller,
-                                    jobject jweb_contents) {
-  content::WebContents* web_contents =
-      content::WebContents::FromJavaWebContents(jweb_contents);
-  DCHECK(web_contents);
-  return ToolbarModelImpl::GetSecurityLevelForWebContents(web_contents);
-}
-
 // Temporary method to allow us to surface a SHA-1 deprecation string on Android
 // in M42. This duplicates a subset of the logic from
 // ToolbarModelImpl::GetSecurityLevelForWebContents() and