PlzNavigate: Move navigation-level mixed content checks to the browser.

content/browser/frame_host/mixed_content_navigation_throttle_unittest.cc

+// Copyright 2016 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 "base/macros.h"
+#include "content/browser/frame_host/mixed_content_navigation_throttle.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+// Tests that many cases where there is or there is not mixed content are
+// correctly detected by MixedContentNavigationThrottle.
+// Note: Browser side version of MixedContentCheckerTest.IsMixedContent. Must be
+// kept in sync manually!
+TEST(MixedContentNavigationThrottleTest, IsMixedContent) {
+  struct TestCase {
+    const char* origin;
+    const char* target;
+    const bool expectation;
+  } cases[] = {
+      {"http://example.com/foo", "http://example.com/foo", false},
+      {"http://example.com/foo", "https://example.com/foo", false},
+      {"http://example.com/foo", "data:text/html,<p>Hi!</p>", false},
+      {"http://example.com/foo", "about:blank", false},
+      {"https://example.com/foo", "https://example.com/foo", false},
+      {"https://example.com/foo", "wss://example.com/foo", false},
+      {"https://example.com/foo", "data:text/html,<p>Hi!</p>", false},
+      {"https://example.com/foo", "http://127.0.0.1/", false},
+      {"https://example.com/foo", "http://[::1]/", false},
+
+      {"https://example.com/foo", "http://example.com/foo", true},
+      {"https://example.com/foo", "http://google.com/foo", true},
+      {"https://example.com/foo", "ws://example.com/foo", true},
+      {"https://example.com/foo", "ws://google.com/foo", true},
+      {"https://example.com/foo", "http://192.168.1.1/", true},
+      {"https://example.com/foo", "http://localhost/", true},
+  };
+
+  for (const auto& test : cases) {
+    SCOPED_TRACE(::testing::Message() << "Origin: " << test.origin
+                                      << ", Target: " << test.target
+                                      << ", Expectation: " << test.expectation);
+    GURL originUrl(test.origin);
+    GURL targetUrl(test.target);
+    EXPECT_EQ(test.expectation,
+              MixedContentNavigationThrottle::IsMixedContentForTesting(
+                  originUrl, targetUrl));
+  }
+}

[Mike West, 2016/07/19 14:41:39]

I think we should have more extensive tests here that verify the result of the
various throttle bits. The layout tests conform the broad behavior, but unit
tests are super-helpful for verification in the small.

[carlosk, 2016/07/19 16:32:16]

Noted!

But layout tests are not be enough anymore. Given the settings are now stored in
Chrome-land and that no Chrome code exist in layout tests we will need to add
new mixed content browser tests to cover those.

+
+}  // content