Add rlz_utils as a new build target to rlz/

rlz/lib/rlz_lib.cc

Index: rlz/lib/rlz_lib.cc
diff --git a/rlz/lib/rlz_lib.cc b/rlz/lib/rlz_lib.cc
index 081f80b0d6a5915b180ebbbdb79404b6f279e409..eb4c8d9bcc075f628cb76165bf6b3bca1c2e7f90 100644
--- a/rlz/lib/rlz_lib.cc
+++ b/rlz/lib/rlz_lib.cc
@@ -14,9 +14,9 @@
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "rlz/lib/assert.h"
-#include "rlz/lib/crc32.h"
 #include "rlz/lib/financial_ping.h"
 #include "rlz/lib/lib_values.h"
+#include "rlz/lib/net_response_check.h"
 #include "rlz/lib/rlz_value_store.h"
 #include "rlz/lib/string_utils.h"
 
@@ -377,57 +377,6 @@ bool FormFinancialPingRequest(Product product, const AccessPoint* access_points,
   return true;
 }
 
-bool IsPingResponseValid(const char* response, int* checksum_idx) {
-  if (!response || !response[0])
-    return false;
-
-  if (checksum_idx)
-    *checksum_idx = -1;
-
-  if (strlen(response) > kMaxPingResponseLength) {
-    ASSERT_STRING("IsPingResponseValid: response is too long to parse.");
-    return false;
-  }
-
-  // Find the checksum line.
-  std::string response_string(response);
-
-  std::string checksum_param("\ncrc32: ");
-  int calculated_crc;
-  int checksum_index = response_string.find(checksum_param);
-  if (checksum_index >= 0) {
-    // Calculate checksum of message preceeding checksum line.
-    // (+ 1 to include the \n)
-    std::string message(response_string.substr(0, checksum_index + 1));
-    if (!Crc32(message.c_str(), &calculated_crc))
-      return false;
-  } else {
-    checksum_param = "crc32: ";  // Empty response case.
-    if (!base::StartsWith(response_string, checksum_param,
-                          base::CompareCase::SENSITIVE))
-      return false;
-
-    checksum_index = 0;
-    if (!Crc32("", &calculated_crc))
-      return false;
-  }
-
-  // Find the checksum value on the response.
-  int checksum_end = response_string.find("\n", checksum_index + 1);
-  if (checksum_end < 0)
-    checksum_end = response_string.size();
-
-  int checksum_begin = checksum_index + checksum_param.size();
-  std::string checksum = response_string.substr(checksum_begin,
-      checksum_end - checksum_begin + 1);
-  base::TrimWhitespaceASCII(checksum, base::TRIM_ALL, &checksum);
-
-  if (checksum_idx)
-    *checksum_idx = checksum_index;
-
-  return calculated_crc == HexStringToInteger(checksum.c_str());
-}
-
 // Complex helpers built on top of other functions.
 
 bool ParseFinancialPingResponse(Product product, const char* response) {