Skip a few "using namespace" that we don't really need.

third_party/WebKit/Source/core/html/shadow/DateTimeNumericFieldElement.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #include "core/html/shadow/DateTimeNumericFieldElement.h"
 
 #include "core/CSSPropertyNames.h"
 #include "core/CSSValueKeywords.h"
 #include "core/events/KeyboardEvent.h"
 #include "platform/fonts/Font.h"
 #include "platform/text/PlatformLocale.h"
 #include "platform/text/TextRun.h"
 
-using namespace WTF::Unicode;
-
 namespace blink {
 
 int DateTimeNumericFieldElement::Range::clampValue(int value) const {
   return std::min(std::max(value, minimum), maximum);
 }
 
 bool DateTimeNumericFieldElement::Range::isInRange(int value) const {
   return value >= minimum && value <= maximum;
 }
 
@@ skipping 13 matching lines @@
       m_step(step),
       m_value(0),
       m_hasValue(false) {
   DCHECK_NE(m_step.step, 0);
   DCHECK_LE(m_range.minimum, m_range.maximum);
   DCHECK_LE(m_hardLimits.minimum, m_hardLimits.maximum);
 
   // We show a direction-neutral string such as "--" as a placeholder. It
   // should follow the direction of numeric values.
   if (localeForOwner().isRTL()) {
-    CharDirection dir = direction(formatValue(this->maximum())[0]);
-    if (dir == LeftToRight || dir == EuropeanNumber || dir == ArabicNumber) {
+    WTF::Unicode::CharDirection dir =
+        WTF::Unicode::direction(formatValue(this->maximum())[0]);
+    if (dir == WTF::Unicode::LeftToRight ||
+        dir == WTF::Unicode::EuropeanNumber ||
+        dir == WTF::Unicode::ArabicNumber) {
       setInlineStyleProperty(CSSPropertyUnicodeBidi, CSSValueBidiOverride);
       setInlineStyleProperty(CSSPropertyDirection, CSSValueLtr);
     }
   }
 }
 
 float DateTimeNumericFieldElement::maximumWidth(const ComputedStyle& style) {
   float maximumWidth = computeTextWidth(style, m_placeholder);
   maximumWidth =
       std::max(maximumWidth, computeTextWidth(style, formatValue(maximum())));
@@ skipping 147 matching lines @@
 int DateTimeNumericFieldElement::roundUp(int n) const {
   n -= m_step.stepBase;
   if (n >= 0)
     n = (n + m_step.step - 1) / m_step.step * m_step.step;
   else
     n = -(-n / m_step.step * m_step.step);
   return n + m_step.stepBase;
 }
 
 }  // namespace blink