Unpack extensions inside chrome's profile directory.

Other users of the temp directory will be altered in a subsequent CL.

BUG=13044
TEST=SandboxedExtensionUnpackerTest.*, ScopedTempDir.UniqueTempDirUnderPath, FileUtilTest.CreateNewTempDirInDirTest, manual testing on win, linux, mac.

Review URL: http://codereview.chromium.org/1582022

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@46078 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/file_util_unittest.cc b/base/file_util_unittest.cc
index c46c39f..25b93e1 100644
--- a/base/file_util_unittest.cc
+++ b/base/file_util_unittest.cc
@@ -1141,6 +1141,17 @@
   EXPECT_TRUE(file_util::Delete(temp_dir, false));
 }
 
+TEST_F(FileUtilTest, CreateNewTemporaryDirInDirTest) {
+  FilePath new_dir;
+  ASSERT_TRUE(file_util::CreateTemporaryDirInDir(
+                  test_dir_,
+                  FILE_PATH_LITERAL("CreateNewTemporaryDirInDirTest"),
+                  &new_dir));
+  EXPECT_TRUE(file_util::PathExists(new_dir));
+  EXPECT_TRUE(test_dir_.IsParent(new_dir));
+  EXPECT_TRUE(file_util::Delete(new_dir, false));
+}
+
 TEST_F(FileUtilTest, GetShmemTempDirTest) {
   FilePath dir;
   EXPECT_TRUE(file_util::GetShmemTempDir(&dir));