CSP, PlzNavigate: make clear what happens with unique origins.

content/common/content_security_policy/csp_source_unittest.cc

 // Copyright 2017 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 "content/common/content_security_policy/csp_context.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 namespace {
@@ skipping 94 matching lines @@
     EXPECT_FALSE(Allow(source, GURL("http-so://a.com"), &context));
     // TODO(jochen): Maybe it should return false?
     EXPECT_TRUE(Allow(source, GURL("https-so://a.com"), &context));
     EXPECT_FALSE(Allow(source, GURL("ftp://a.com"), &context));
 
     // Self's scheme is not in the http familly.
     context.SetSelf(url::Origin(GURL("ftp://a.com/")));
     EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
     EXPECT_TRUE(Allow(source, GURL("ftp://a.com"), &context));
 
-    // Self's scheme is unique.
+    // Self's scheme is unique (non standard scheme).
     context.SetSelf(url::Origin(GURL("non-standard-scheme://a.com")));
-    // TODO(mkwst, arthursonzogni): This result might be wrong.
-    // See http://crbug.com/692449
     EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
-    // TODO(mkwst, arthursonzogni): This result might be wrong.
-    // See http://crbug.com/692449
     EXPECT_FALSE(Allow(source, GURL("non-standard-scheme://a.com"), &context));
+
+    // Self's scheme is unique (data-url).
+    context.SetSelf(url::Origin(GURL("data:text/html,<iframe src=[...]>")));
+    EXPECT_FALSE(Allow(source, GURL("http://a.com"), &context));
+    EXPECT_FALSE(Allow(source, GURL("data:text/html,hello"), &context));
   }
 }
 
 TEST(CSPSourceTest, AllowHost) {
   CSPContext context;
   context.SetSelf(url::Origin(GURL("http://example.com")));
 
   // Host is * (source-expression = "http://*")
   {
     CSPSource source("http", "", true, url::PORT_UNSPECIFIED, false, "");
@@ skipping 195 matching lines @@
   CSPContext context;
   CSPSource source("http", "a.com", false, 80, false, "");
   EXPECT_TRUE(Allow(source, GURL("http://a.com:80"), &context, true));
   EXPECT_FALSE(Allow(source, GURL("https://a.com:80"), &context, true));
   EXPECT_FALSE(Allow(source, GURL("http://a.com:443"), &context, true));
   EXPECT_TRUE(Allow(source, GURL("https://a.com:443"), &context, true));
   EXPECT_TRUE(Allow(source, GURL("https://a.com"), &context, true));
 }
 
 }  // namespace content