Remove some unnecessary using namespaces and add include guards

third_party/WebKit/Source/core/layout/LayoutText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 36 matching lines @@
 #include "platform/text/Character.h"
 #include "platform/text/Hyphenation.h"
 #include "platform/text/TextBreakIterator.h"
 #include "platform/text/TextRunIterator.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebScheduler.h"
 #include "public/platform/WebThread.h"
 #include "wtf/text/StringBuffer.h"
 #include "wtf/text/StringBuilder.h"
 
-using namespace WTF;
-using namespace Unicode;
-
 namespace blink {
 
 struct SameSizeAsLayoutText : public LayoutObject {
   uint32_t bitfields : 16;
   float widths[4];
   String text;
   void* pointers[2];
 };
 
 static_assert(sizeof(LayoutText) == sizeof(SameSizeAsLayoutText),
@@ skipping 62 matching lines @@
   if (!boundary)
     return;
 
   StringBuilder result;
   result.reserveCapacity(length);
 
   int32_t endOfWord;
   int32_t startOfWord = boundary->first();
   for (endOfWord = boundary->next(); endOfWord != TextBreakDone;
        startOfWord = endOfWord, endOfWord = boundary->next()) {
-    if (startOfWord)  // Ignore first char of previous string
-      result.append(input[startOfWord - 1] == noBreakSpaceCharacter
-                        ? noBreakSpaceCharacter
-                        : toTitleCase(stringWithPrevious[startOfWord]));
+    if (startOfWord) {  // Ignore first char of previous string
+      result.append(
+          input[startOfWord - 1] == noBreakSpaceCharacter
+              ? noBreakSpaceCharacter
+              : WTF::Unicode::toTitleCase(stringWithPrevious[startOfWord]));
+    }
     for (int i = startOfWord + 1; i < endOfWord; i++)
       result.append(input[i - 1]);
   }
 
   *string = result.toString();
 }
 
 LayoutText::LayoutText(Node* node, PassRefPtr<StringImpl> str)
     : LayoutObject(!node || node->isDocumentNode() ? 0 : node),
       m_hasTab(false),
@@ skipping 1872 matching lines @@
   LayoutRect rect = LayoutRect(
       IntRect(firstRunX(), firstRunY(), linesBox.width(), linesBox.height()));
   LayoutBlock* block = containingBlock();
   if (block && hasTextBoxes())
     block->adjustChildDebugRect(rect);
 
   return rect;
 }
 
 }  // namespace blink