Revert 257524 "Move IsStringASCII/UTF8 to base namespace."

trunk/src/base/strings/string_util.cc

Index: trunk/src/base/strings/string_util.cc
===================================================================
--- trunk/src/base/strings/string_util.cc	(revision 257532)
+++ trunk/src/base/strings/string_util.cc	(working copy)
@@ -324,20 +324,8 @@
   return input.find_first_not_of(characters) == StringPiece16::npos;
 }
 
-bool IsStringUTF8(const StringPiece& str) {
-  const char *src = str.data();
-  int32 src_len = static_cast<int32>(str.length());
-  int32 char_index = 0;
+}  // namespace base
 
-  while (char_index < src_len) {
-    int32 code_point;
-    CBU8_NEXT(src, char_index, src_len, code_point);
-    if (!IsValidCharacter(code_point))
-      return false;
-  }
-  return true;
-}
-
 template<class STR>
 static bool DoIsStringASCII(const STR& str) {
   for (size_t i = 0; i < str.length(); i++) {
@@ -348,7 +336,7 @@
   return true;
 }
 
-bool IsStringASCII(const StringPiece& str) {
+bool IsStringASCII(const base::StringPiece& str) {
   return DoIsStringASCII(str);
 }
 
@@ -356,8 +344,20 @@
   return DoIsStringASCII(str);
 }
 
-}  // namespace base
+bool IsStringUTF8(const std::string& str) {
+  const char *src = str.data();
+  int32 src_len = static_cast<int32>(str.length());
+  int32 char_index = 0;
 
+  while (char_index < src_len) {
+    int32 code_point;
+    CBU8_NEXT(src, char_index, src_len, code_point);
+    if (!base::IsValidCharacter(code_point))
+      return false;
+  }
+  return true;
+}
+
 template<typename Iter>
 static inline bool DoLowerCaseEqualsASCII(Iter a_begin,
                                           Iter a_end,