Replace WTF_LOG() with NETWORK_DVLOG() or RESOURCE_LOADING_DVLOG().

third_party/WebKit/Source/core/fetch/ResourceLoadingLog.h

Index: third_party/WebKit/Source/core/fetch/ResourceLoadingLog.h
diff --git a/third_party/WebKit/Source/core/fetch/ResourceLoadingLog.h b/third_party/WebKit/Source/core/fetch/ResourceLoadingLog.h
new file mode 100644
index 0000000000000000000000000000000000000000..2b9219c1d6ca152db16830287a5342b394e2a6a4
--- /dev/null
+++ b/third_party/WebKit/Source/core/fetch/ResourceLoadingLog.h
@@ -0,0 +1,20 @@
+// 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.
+
+#ifndef ResourceLoadingLog_h
+#define ResourceLoadingLog_h
+
+#include "wtf/Assertions.h"
+
+#if DCHECK_IS_ON()
+// We can see logs with |--v=N| or |--vmodule=ResourceLoadingLog=N| where N is a
+// verbose level.
+#define RESOURCE_LOADING_DVLOG(verbose_level) \
+    LAZY_STREAM(VLOG_STREAM(verbose_level), \
+        ((verbose_level) <= ::logging::GetVlogLevel("ResourceLoadingLog.h")))
+#else
+#define RESOURCE_LOADING_DVLOG(verbose_level) EAT_STREAM_PARAMETERS
+#endif
+
+#endif // ResourceLoadingLog_h