Move ".crx"/".pem" constants and extension_filenames constants into extensions/common/constants.cc.

chrome/common/extensions/extension_file_util_unittest.cc

Index: chrome/common/extensions/extension_file_util_unittest.cc
diff --git a/chrome/common/extensions/extension_file_util_unittest.cc b/chrome/common/extensions/extension_file_util_unittest.cc
index 24e102c9fe62b67ff88f5cabd330170e4a8341c4..81f4cae2cc5ee8c234fe0e64d3a0ade3efead837 100644
--- a/chrome/common/extensions/extension_file_util_unittest.cc
+++ b/chrome/common/extensions/extension_file_util_unittest.cc
@@ -154,7 +154,8 @@ TEST_F(ExtensionFileUtilTest, CheckIllegalFilenamesOnlyReserved) {
   ASSERT_TRUE(temp.CreateUniqueTempDir());
 
   const base::FilePath::CharType* folders[] =
-      { extensions::kLocaleFolder, extensions::kPlatformSpecificFolder };
+      { extensions::filenames::kLocaleFolder,
+        extensions::filenames::kPlatformSpecificFolder };
 
   for (size_t i = 0; i < arraysize(folders); i++) {
     base::FilePath src_path = temp.path().Append(folders[i]);
@@ -170,7 +171,8 @@ TEST_F(ExtensionFileUtilTest, CheckIllegalFilenamesReservedAndIllegal) {
   base::ScopedTempDir temp;
   ASSERT_TRUE(temp.CreateUniqueTempDir());
 
-  base::FilePath src_path = temp.path().Append(extensions::kLocaleFolder);
+  base::FilePath src_path =
+      temp.path().Append(extensions::filenames::kLocaleFolder);
   ASSERT_TRUE(file_util::CreateDirectory(src_path));
 
   src_path = temp.path().AppendASCII("_some_dir");