Reland 'Convert //net and //chromecast to std::unordered_*'

net/tools/balsa/string_piece_utils.h

Index: net/tools/balsa/string_piece_utils.h
diff --git a/net/tools/balsa/string_piece_utils.h b/net/tools/balsa/string_piece_utils.h
index ccc9d52729ff641ce5c5f66d64507c723ca19da6..69877646ee55a7e0165d071248ec92cf96f471b1 100644
--- a/net/tools/balsa/string_piece_utils.h
+++ b/net/tools/balsa/string_piece_utils.h
@@ -12,48 +12,6 @@
 
 namespace net {
 
-#if defined(COMPILER_MSVC)
-struct StringPieceCaseCompare {
-  static const size_t bucket_size = 4;
-
-  size_t operator()(const base::StringPiece& sp) const {
-    // based on __stl_string_hash in http://www.sgi.com/tech/stl/string
-    size_t hash_val = 0;
-    for (base::StringPiece::const_iterator it = sp.begin();
-         it != sp.end(); ++it) {
-      hash_val = 5 * hash_val + base::ToLowerASCII(*it);
-    }
-    return hash_val;
-  }
-
-  bool operator()(const base::StringPiece& sp1,
-                  const base::StringPiece& sp2) const {
-    size_t len1 = sp1.length();
-    size_t len2 = sp2.length();
-    bool sp1_shorter = len1 < len2;
-    size_t len = sp1_shorter ? len1 : len2;
-
-    int rv = 0;
-    for (size_t i = 0; i < len; i++) {
-      char sp1_lower = base::ToLowerASCII(sp1[i]);
-      char sp2_lower = base::ToLowerASCII(sp2[i]);
-      if (sp1_lower < sp2_lower) {
-        rv = -1;
-        break;
-      }
-      if (sp1_lower > sp2_lower) {
-        rv = 1;
-        break;
-      }
-    }
-
-    if (rv == 0) {
-      return sp1_shorter;
-    }
-    return rv < 0;
-  }
-};
-#else  // COMPILER_MSVC
 struct StringPieceCaseHash {
   size_t operator()(const base::StringPiece& sp) const {
     // based on __stl_string_hash in http://www.sgi.com/tech/stl/string
@@ -65,7 +23,6 @@ struct StringPieceCaseHash {
     return hash_val;
   }
 };
-#endif  // COMPILER_MSVC
 
 struct StringPieceCaseEqual {
   bool operator()(const base::StringPiece& piece1,