import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

layout/base/LayoutLogging.cpp

@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Chromium headers must come before Mozilla headers.
+#include "base/process_util.h"
+
+#include "LayoutLogging.h"
+
+namespace mozilla {
+namespace detail {
+
+void LayoutLogWarning(const char* aStr, const char* aExpr,
+                      const char* aFile, int32_t aLine)
+{
+  if (aExpr) {
+    MOZ_LOG(sLayoutLog,
+            mozilla::LogLevel::Warning,
+            ("[%d] WARNING: %s: '%s', file %s, line %d",
+             base::GetCurrentProcId(),
+             aStr, aExpr, aFile, aLine));
+  } else {
+    MOZ_LOG(sLayoutLog,
+            mozilla::LogLevel::Warning,
+            ("[%d] WARNING: %s: file %s, line %d",
+             base::GetCurrentProcId(),
+             aStr, aFile, aLine));
+  }
+}
+
+} // namespace detail
+} // namespace mozilla