Revert of Move file_handlers API from //chrome to //extensions

chrome/browser/extensions/api/file_handlers/api_file_handler_util_unittest.cc

+// Copyright 2014 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/browser/extensions/api/file_handlers/app_file_handler_util.h"
+
+#include "extensions/browser/entry_info.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace extensions {
+namespace app_file_handler_util {
+namespace {
+
+FileHandlerInfo CreateHandlerInfoFromExtension(const std::string& extension) {
+  FileHandlerInfo handler_info;
+  handler_info.extensions.insert(extension);
+  return handler_info;
+}
+
+FileHandlerInfo CreateHandlerInfoFromIncludeDirectories(
+    bool include_directories) {
+  FileHandlerInfo handler_info;
+  handler_info.include_directories = include_directories;
+  return handler_info;
+}
+
+}  // namespace
+
+TEST(FileHandlersAppFileHandlerUtilTest, FileHandlerCanHandleEntry) {
+  // File handler for extension "gz" should accept "*.gz", including "*.tar.gz".
+  EXPECT_TRUE(FileHandlerCanHandleEntry(
+      CreateHandlerInfoFromExtension("gz"),
+      EntryInfo(base::FilePath::FromUTF8Unsafe("foo.gz"),
+                "application/octet-stream", false)));
+  EXPECT_FALSE(FileHandlerCanHandleEntry(
+      CreateHandlerInfoFromExtension("gz"),
+      EntryInfo(base::FilePath::FromUTF8Unsafe("foo.tgz"),
+                "application/octet-stream", false)));
+  EXPECT_TRUE(FileHandlerCanHandleEntry(
+      CreateHandlerInfoFromExtension("gz"),
+      EntryInfo(base::FilePath::FromUTF8Unsafe("foo.tar.gz"),
+                "application/octet-stream", false)));
+  EXPECT_FALSE(FileHandlerCanHandleEntry(
+      CreateHandlerInfoFromExtension("tar.gz"),
+      EntryInfo(base::FilePath::FromUTF8Unsafe("foo.gz"),
+                "application/octet-stream", false)));
+  EXPECT_TRUE(FileHandlerCanHandleEntry(
+      CreateHandlerInfoFromExtension("tar.gz"),
+      EntryInfo(base::FilePath::FromUTF8Unsafe("foo.tar.gz"),
+                "application/octet-stream", false)));
+  EXPECT_FALSE(FileHandlerCanHandleEntry(
+      CreateHandlerInfoFromExtension("gz"),
+      EntryInfo(base::FilePath::FromUTF8Unsafe("directory"), "", true)));
+
+  EXPECT_FALSE(FileHandlerCanHandleEntry(
+      CreateHandlerInfoFromIncludeDirectories(false),
+      EntryInfo(base::FilePath::FromUTF8Unsafe("directory"), "", true)));
+  EXPECT_TRUE(FileHandlerCanHandleEntry(
+      CreateHandlerInfoFromIncludeDirectories(true),
+      EntryInfo(base::FilePath::FromUTF8Unsafe("directory"), "", true)));
+}
+
+}  // namespace app_file_handler_util
+}  // namespace extensions