storage: Use stl utilities from the base namespace

storage/browser/fileapi/obfuscated_file_util.cc

Index: storage/browser/fileapi/obfuscated_file_util.cc
diff --git a/storage/browser/fileapi/obfuscated_file_util.cc b/storage/browser/fileapi/obfuscated_file_util.cc
index fa151ac623a656bed8acd77b475ac9ec1123d685..dfe71c6a9b19c7ee06afc217723881b857fcde5d 100644
--- a/storage/browser/fileapi/obfuscated_file_util.cc
+++ b/storage/browser/fileapi/obfuscated_file_util.cc
@@ -962,7 +962,7 @@ void ObfuscatedFileUtil::MaybePrepopulateDatabase(
   for (size_t i = 0; i < type_strings_to_prepopulate.size(); ++i) {
     const std::string type_string = type_strings_to_prepopulate[i];
     // Only handles known types.
-    if (!ContainsKey(known_type_strings_, type_string))
+    if (!base::ContainsKey(known_type_strings_, type_string))
       continue;
     base::File::Error error = base::File::FILE_ERROR_FAILED;
     base::FilePath path = GetDirectoryForOriginAndType(
@@ -1264,8 +1264,8 @@ void ObfuscatedFileUtil::MarkUsed() {
 
 void ObfuscatedFileUtil::DropDatabases() {
   origin_database_.reset();
-  STLDeleteContainerPairSecondPointers(
-      directories_.begin(), directories_.end());
+  base::STLDeleteContainerPairSecondPointers(directories_.begin(),
+                                             directories_.end());
   directories_.clear();
   timer_.reset();
 }