Mixed Content: Migrate ResourceFetcher to the static mixed content checker.

Source/core/loader/MixedContentChecker.h

Index: Source/core/loader/MixedContentChecker.h
diff --git a/Source/core/loader/MixedContentChecker.h b/Source/core/loader/MixedContentChecker.h
index 14330f6645182ad391c91243bb411eb5db82668e..2d81bdca77b9402864d468fa8dbe18982aea8af6 100644
--- a/Source/core/loader/MixedContentChecker.h
+++ b/Source/core/loader/MixedContentChecker.h
@@ -80,6 +80,8 @@ private:
     };
 
     static ContextType contextTypeFromContext(WebURLRequest::RequestContext);
+    static const char* typeNameFromContext(WebURLRequest::RequestContext);
+    static void logToConsole(LocalFrame*, const KURL&, WebURLRequest::RequestContext, bool allowed);
 
     // FIXME: This should probably have a separate client from FrameLoader.
     FrameLoaderClient* client() const;