Add more string_util functions to base namespace.

chrome/common/crash_keys.cc

 // Copyright (c) 2013 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.
 
 #include "chrome/common/crash_keys.h"
 
 #include "base/command_line.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/strings/string_split.h"
@@ skipping 242 matching lines @@
     }
   }
 
   return base::debug::InitCrashKeys(&keys.at(0), keys.size(),
                                     kSingleChunkLength);
 }
 
 void SetMetricsClientIdFromGUID(const std::string& metrics_client_guid) {
   std::string stripped_guid(metrics_client_guid);
   // Remove all instance of '-' char from the GUID. So BCD-WXY becomes BCDWXY.
-  ReplaceSubstringsAfterOffset(&stripped_guid, 0, "-", "");
+  base::ReplaceSubstringsAfterOffset(
+      &stripped_guid, 0, "-", base::StringPiece());
   if (stripped_guid.empty())
     return;
 
 #if defined(OS_MACOSX)
   // The crash client ID is maintained by Crashpad and is distinct from the
   // metrics client ID, which is carried in its own key.
   base::debug::SetCrashKeyValue(kMetricsClientId, stripped_guid);
 #else
   // The crash client ID is set by the application when Breakpad is in use.
   // The same ID as the metrics client ID is used.
@@ skipping 171 matching lines @@
 }
 
 ScopedPrinterInfo::~ScopedPrinterInfo() {
   for (size_t i = 0; i < kPrinterInfoCount; ++i) {
     std::string key = base::StringPrintf(kPrinterInfo, i + 1);
     base::debug::ClearCrashKey(key);
   }
 }
 
 }  // namespace crash_keys