Modified the pepper file chooser API to support filtering files by extensions.

chrome/browser/file_select_helper_unittest.cc

Index: chrome/browser/file_select_helper_unittest.cc
diff --git a/chrome/browser/file_select_helper_unittest.cc b/chrome/browser/file_select_helper_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..5eb0436957f75448ef797d6bd58d9ea11dfbcdee
--- /dev/null
+++ b/chrome/browser/file_select_helper_unittest.cc
@@ -0,0 +1,19 @@
+// Copyright (c) 2012 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/file_select_helper.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+TEST(FileSelectHelperTest, IsAcceptTypeValid) {
+  EXPECT_TRUE(FileSelectHelper::IsAcceptTypeValid("a/b"));
+  EXPECT_TRUE(FileSelectHelper::IsAcceptTypeValid("abc/def"));
+  EXPECT_TRUE(FileSelectHelper::IsAcceptTypeValid("abc/*"));
+  EXPECT_TRUE(FileSelectHelper::IsAcceptTypeValid(".a"));
+  EXPECT_TRUE(FileSelectHelper::IsAcceptTypeValid(".abc"));
+
+  EXPECT_FALSE(FileSelectHelper::IsAcceptTypeValid("."));
+  EXPECT_FALSE(FileSelectHelper::IsAcceptTypeValid("/"));
+  EXPECT_FALSE(FileSelectHelper::IsAcceptTypeValid("ABC/*"));
+  EXPECT_FALSE(FileSelectHelper::IsAcceptTypeValid("abc/def "));
+}