Show form not secure warnings for blob and filesystem URLs.

components/security_state/core/security_state.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/security_state/core/security_state.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 106 matching lines @@
   bool is_cryptographic_with_certificate =
       (url.SchemeIsCryptographic() && visible_security_state.certificate);
 
   // Set the security level to DANGEROUS for major certificate errors.
   if (is_cryptographic_with_certificate &&
       net::IsCertStatusError(visible_security_state.cert_status) &&
       !net::IsCertStatusMinorError(visible_security_state.cert_status)) {
     return DANGEROUS;
   }
 
-  // Choose the appropriate security level for HTTP requests.
+  // Choose the appropriate security level for requests to HTTP and pseudo URLs
+  // (data:, blob:, filesystem:). filesystem: is a standard scheme so does not
+  // need to be explicitly listed here.
   if (!is_cryptographic_with_certificate) {
-    if (!is_origin_secure_callback.Run(url) && url.IsStandard()) {
+    if (!is_origin_secure_callback.Run(url) &&
+        (url.IsStandard() || url.SchemeIs(url::kDataScheme) ||
+         url.SchemeIs(url::kBlobScheme))) {
       return GetSecurityLevelForNonSecureFieldTrial(
           visible_security_state.displayed_password_field_on_http ||
           visible_security_state.displayed_credit_card_field_on_http);
     }
     return NONE;
   }
 
   // Downgrade the security level for active insecure subresources.
   if (mixed_content_status == CONTENT_STATUS_RAN ||
       mixed_content_status == CONTENT_STATUS_DISPLAYED_AND_RAN ||
@@ skipping 163 matching lines @@
               other.displayed_content_with_cert_errors &&
           ran_content_with_cert_errors == other.ran_content_with_cert_errors &&
           pkp_bypassed == other.pkp_bypassed &&
           displayed_password_field_on_http ==
               other.displayed_password_field_on_http &&
           displayed_credit_card_field_on_http ==
               other.displayed_credit_card_field_on_http);
 }
 
 }  // namespace security_state