Avoid "using namespace blink" in global scope

third_party/WebKit/Source/core/editing/WebSubstringUtil.mm

 /*
  * Copyright (C) 2005, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 40 matching lines @@
 #include "core/layout/LayoutObject.h"
 #include "core/page/Page.h"
 #include "core/style/ComputedStyle.h"
 #include "platform/fonts/Font.h"
 #include "platform/mac/ColorMac.h"
 #include "public/platform/WebRect.h"
 #include "public/web/WebFrameWidget.h"
 #include "public/web/WebHitTestResult.h"
 #include "public/web/WebLocalFrame.h"
 
-using namespace blink;
+namespace blink {
 
-static NSAttributedString* attributedSubstringFromRange(
-    const EphemeralRange& range,
-    float fontScale) {
+namespace {
+
+NSAttributedString* attributedSubstringFromRange(const EphemeralRange& range,
+                                                 float fontScale) {
   NSMutableAttributedString* string = [[NSMutableAttributedString alloc] init];
   NSMutableDictionary* attrs = [NSMutableDictionary dictionary];
   size_t length = range.EndPosition().ComputeOffsetInContainerNode() -
                   range.StartPosition().ComputeOffsetInContainerNode();
 
   unsigned position = 0;
 
   // TODO(editing-dev): The use of updateStyleAndLayoutIgnorePendingStylesheets
   // needs to be audited.  see http://crbug.com/590369 for more details.
   range.StartPosition()
@@ skipping 66 matching lines @@
 
   // Adjust for the font's descender. AppKit wants the baseline point.
   if ([string length]) {
     NSDictionary* attributes = [string attributesAtIndex:0 effectiveRange:NULL];
     if (NSFont* font = [attributes objectForKey:NSFontAttributeName])
       stringPoint.Move(0, ceil([font descender]));
   }
   return stringPoint;
 }
 
-namespace blink {
+}  // namespace
 
 NSAttributedString* WebSubstringUtil::AttributedWordAtPoint(
     WebFrameWidget* frame_widget,
     WebPoint point,
     WebPoint& baseline_point) {
   HitTestResult result = static_cast<WebFrameWidgetBase*>(frame_widget)
                              ->CoreHitTestResultAt(point);
 
   if (!result.InnerNode())
     return nil;
@@ skipping 42 matching lines @@
     return nil;
 
   NSAttributedString* result = attributedSubstringFromRange(
       ephemeral_range, frame->GetPage()->GetVisualViewport().Scale());
   if (baseline_point)
     *baseline_point = getBaselinePoint(frame->View(), ephemeral_range, result);
   return result;
 }
 
 }  // namespace blink