Use 'icu::' namespace explicitly

base/file_util_icu.cc

 // Copyright (c) 2009 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.
 
 // File utilities that use the ICU library go in this file.  Functions using ICU
 // are separated from the other functions to prevent ICU being pulled in by the
 // linker if there is a false dependency.
 //
 // (The VS2005 linker finds such a false dependency and adds ~300K of ICU to
 // chrome.exe if this code lives in file_util.cc, even though none of this code
 // is called.)
 
 #include "base/file_util.h"
 
 #include "base/singleton.h"
 #include "base/string_util.h"
 #include "unicode/uniset.h"
 
 namespace {
 class IllegalCharacters {
  public:
   bool contains(UChar32 ucs4) {
     return !!set->contains(ucs4);
   }
 
   bool containsNone(const string16 &s) {
-    return !!set->containsNone(UnicodeString(s.c_str(), s.size()));
+    return !!set->containsNone(icu::UnicodeString(s.c_str(), s.size()));
   }
 
  private:
   friend class Singleton<IllegalCharacters>;
   friend struct DefaultSingletonTraits<IllegalCharacters>;
 
   IllegalCharacters();
   ~IllegalCharacters() { }
 
-  scoped_ptr<UnicodeSet> set;
+  scoped_ptr<icu::UnicodeSet> set;
 
   DISALLOW_COPY_AND_ASSIGN(IllegalCharacters);
 };
 
 IllegalCharacters::IllegalCharacters() {
   UErrorCode status = U_ZERO_ERROR;
   // Control characters, formatting characters, non-characters, and
   // some printable ASCII characters regarded as dangerous ('"*/:<>?\\').
   // See  http://blogs.msdn.com/michkap/archive/2006/11/03/941420.aspx
   // and http://msdn2.microsoft.com/en-us/library/Aa365247.aspx
   // TODO(jungshik): Revisit the set. ZWJ and ZWNJ are excluded because they
   // are legitimate in Arabic and some S/SE Asian scripts. However, when used
   // elsewhere, they can be confusing/problematic.
   // Also, consider wrapping the set with our Singleton class to create and
   // freeze it only once. Note that there's a trade-off between memory and
   // speed.
 #if defined(WCHAR_T_IS_UTF16)
-  set.reset(new UnicodeSet(UnicodeString(
+  set.reset(new icu::UnicodeSet(icu::UnicodeString(
       L"[[\"*/:<>?\\\\|][:Cc:][:Cf:] - [\u200c\u200d]]"), status));
 #else
-  set.reset(new UnicodeSet(UNICODE_STRING_SIMPLE(
+  set.reset(new icu::UnicodeSet(UNICODE_STRING_SIMPLE(
       "[[\"*/:<>?\\\\|][:Cc:][:Cf:] - [\\u200c\\u200d]]").unescape(),
       status));
 #endif
   DCHECK(U_SUCCESS(status));
   // Add non-characters. If this becomes a performance bottleneck by
   // any chance, do not add these to |set| and change IsFilenameLegal()
   // to check |ucs4 & 0xFFFEu == 0xFFFEu|, in addiition to calling
   // containsNone().
   set->add(0xFDD0, 0xFDEF);
   for (int i = 0; i <= 0x10; ++i) {
@@ skipping 51 matching lines @@
       (*file_name)[i] = replace_char;
     }
     ++i;
   }
 #else
 #error wchar_t* should be either UTF-16 or UTF-32
 #endif
 }
 
 }  // namespace