Move StringPiece into the base namespace. It is colliding

base/string_util.h

 // Copyright (c) 2006-2008 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.
 //
 // This file defines utility functions for working with strings.
 
 #ifndef BASE_STRING_UTIL_H_
 #define BASE_STRING_UTIL_H_
 
 #include <stdarg.h>   // va_list
@@ skipping 158 matching lines @@
 // (2) If |trim_sequences_with_line_breaks| is true, any other whitespace
 //     sequences containing a CR or LF are trimmed.
 // (3) All other whitespace sequences are converted to single spaces.
 std::wstring CollapseWhitespace(const std::wstring& text,
                                 bool trim_sequences_with_line_breaks);
 std::string CollapseWhitespaceASCII(const std::string& text,
                                     bool trim_sequences_with_line_breaks);
 
 // These convert between ASCII (7-bit) and Wide/UTF16 strings.
 std::string WideToASCII(const std::wstring& wide);
-std::wstring ASCIIToWide(const StringPiece& ascii);
+std::wstring ASCIIToWide(const base::StringPiece& ascii);
 std::string UTF16ToASCII(const string16& utf16);
-string16 ASCIIToUTF16(const StringPiece& ascii);
+string16 ASCIIToUTF16(const base::StringPiece& ascii);
 
 // These convert between UTF-8, -16, and -32 strings. They are potentially slow,
 // so avoid unnecessary conversions. The low-level versions return a boolean
 // indicating whether the conversion was 100% valid. In this case, it will still
 // do the best it can and put the result in the output buffer. The versions that
 // return strings ignore this error and just return the best conversion
 // possible.
 //
 // Note that only the structural validity is checked and non-character
 // codepoints and unassigned are regarded as valid.
 // TODO(jungshik): Consider replacing an invalid input sequence with
 // the Unicode replacement character or adding |replacement_char| parameter.
 // Currently, it's skipped in the ouput, which could be problematic in
 // some situations.
 bool WideToUTF8(const wchar_t* src, size_t src_len, std::string* output);
 std::string WideToUTF8(const std::wstring& wide);
 bool UTF8ToWide(const char* src, size_t src_len, std::wstring* output);
-std::wstring UTF8ToWide(const StringPiece& utf8);
+std::wstring UTF8ToWide(const base::StringPiece& utf8);
 
 bool WideToUTF16(const wchar_t* src, size_t src_len, string16* output);
 string16 WideToUTF16(const std::wstring& wide);
 bool UTF16ToWide(const char16* src, size_t src_len, std::wstring* output);
 std::wstring UTF16ToWide(const string16& utf16);
 
 bool UTF8ToUTF16(const char* src, size_t src_len, string16* output);
 string16 UTF8ToUTF16(const std::string& utf8);
 bool UTF16ToUTF8(const char16* src, size_t src_len, std::string* output);
 std::string UTF16ToUTF8(const string16& utf16);
@@ skipping 70 matching lines @@
 // Note that IsStringUTF8 checks not only if the input is structrually
 // valid but also if it doesn't contain any non-character codepoint
 // (e.g. U+FFFE). It's done on purpose because all the existing callers want
 // to have the maximum 'discriminating' power from other encodings. If
 // there's a use case for just checking the structural validity, we have to
 // add a new function for that.
 bool IsString8Bit(const std::wstring& str);
 bool IsStringUTF8(const std::string& str);
 bool IsStringWideUTF8(const std::wstring& str);
 bool IsStringASCII(const std::wstring& str);
-bool IsStringASCII(const StringPiece& str);
+bool IsStringASCII(const base::StringPiece& str);
 bool IsStringASCII(const string16& str);
 
 // ASCII-specific tolower.  The standard library's tolower is locale sensitive,
 // so we don't want to use it here.
 template <class Char> inline Char ToLowerASCII(Char c) {
   return (c >= 'A' && c <= 'Z') ? (c + ('a' - 'A')) : c;
 }
 
 // Converts the elements of the given string.  This version uses a pointer to
 // clearly differentiate it from the non-pointer variant.
@@ skipping 45 matching lines @@
                           const char* b);
 bool LowerCaseEqualsASCII(const char* a_begin,
                           const char* a_end,
                           const char* b);
 bool LowerCaseEqualsASCII(const wchar_t* a_begin,
                           const wchar_t* a_end,
                           const char* b);
 
 // Performs a case-sensitive string compare. The behavior is undefined if both
 // strings are not ASCII.
-bool EqualsASCII(const string16& a, const StringPiece& b);
+bool EqualsASCII(const string16& a, const base::StringPiece& b);
 
 // Returns true if str starts with search, or false otherwise.
 bool StartsWithASCII(const std::string& str,
                      const std::string& search,
                      bool case_sensitive);
 bool StartsWith(const std::wstring& str,
                 const std::wstring& search,
                 bool case_sensitive);
 
 // Returns true if str ends with search, or false otherwise.
@@ skipping 293 matching lines @@
 #elif defined(WCHAR_T_IS_UTF32)
   typedef uint32 Unsigned;
 #endif
 };
 template<>
 struct ToUnsigned<short> {
   typedef unsigned short Unsigned;
 };
 
 #endif  // BASE_STRING_UTIL_H_