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

third_party/WebKit/Source/core/loader/MixedContentCheckerTest.cpp

Index: third_party/WebKit/Source/core/loader/MixedContentCheckerTest.cpp
diff --git a/third_party/WebKit/Source/core/loader/MixedContentCheckerTest.cpp b/third_party/WebKit/Source/core/loader/MixedContentCheckerTest.cpp
index 2d7ba2b672531ee85ecb183815c94421a918a8ae..0145863044ad3ffc04ba81845b163c62d37fff2c 100644
--- a/third_party/WebKit/Source/core/loader/MixedContentCheckerTest.cpp
+++ b/third_party/WebKit/Source/core/loader/MixedContentCheckerTest.cpp
@@ -18,6 +18,11 @@
 
 namespace blink {
 
+// Tests that MixedContentChecker::isMixedContent correctly detects or ignores
+// many cases where there is or there is not mixed content, respectively.
+// Note: Renderer side version of
+// MixedContentNavigationThrottleTest.IsMixedContent. Must be kept in sync
+// manually!
 TEST(MixedContentCheckerTest, IsMixedContent) {
   struct TestCase {
     const char* origin;