Revert of Downgrade lock icon for broken-HTTPS subresources

third_party/WebKit/Source/core/loader/MixedContentChecker.h

Index: third_party/WebKit/Source/core/loader/MixedContentChecker.h
diff --git a/third_party/WebKit/Source/core/loader/MixedContentChecker.h b/third_party/WebKit/Source/core/loader/MixedContentChecker.h
index e2e50c4a13e56500d8aacceb03f1f26210284194..d88780bda20c9b5f6fb3435ac3bef91bdcb55999 100644
--- a/third_party/WebKit/Source/core/loader/MixedContentChecker.h
+++ b/third_party/WebKit/Source/core/loader/MixedContentChecker.h
@@ -31,7 +31,6 @@
 #ifndef MixedContentChecker_h
 #define MixedContentChecker_h
 
-#include "base/gtest_prod_util.h"
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "platform/network/ResourceRequest.h"
@@ -43,7 +42,6 @@ namespace blink {
 class FrameLoaderClient;
 class LocalFrame;
 class KURL;
-class ResourceResponse;
 class SecurityOrigin;
 
 class CORE_EXPORT MixedContentChecker final {
@@ -77,10 +75,7 @@ public:
     // for a mixed content check for the given frame type.
     static LocalFrame* effectiveFrameForFrameType(LocalFrame*, WebURLRequest::FrameType);
 
-    static void handleCertificateError(LocalFrame*, const ResourceRequest&, const ResourceResponse&);
-
 private:
-    FRIEND_TEST_ALL_PREFIXES(MixedContentCheckerTest, HandleCertificateError);
     enum MixedContentType {
         Display,
         Execution,