Add ICUError to handle ICU failures

third_party/WebKit/Source/platform/text/ICUError.cpp

+// 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.
+
+#include "platform/text/ICUError.h"
+
+namespace blink {
+
+// Distinguish memory allocation failures from other errors.
+// https://groups.google.com/a/chromium.org/d/msg/platform-architecture-dev/MP0k9WGnCjA/zIBiJtilBwAJ
+static NEVER_INLINE void ICUOutOfMemory() {
+  OOM_CRASH();
+}
+
+void ICUError::handleFailure() {
+  switch (m_error) {
+    case U_MEMORY_ALLOCATION_ERROR:
+      ICUOutOfMemory();
+      break;
+    case U_ILLEGAL_ARGUMENT_ERROR:
+      CHECK(false) << m_error;
+      break;
+    default:
+      break;
+  }
+}
+
+}  // namespace blink