Put Filter into namespace net.

net/base/filter_unittest.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 "net/base/filter.h"
 #include "net/base/mock_filter_context.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace net {
+
 class FilterTest : public testing::Test {
 };
 
 TEST(FilterTest, ContentTypeId) {
   // Check for basic translation of Content-Encoding, including case variations.
   EXPECT_EQ(Filter::FILTER_TYPE_DEFLATE,
             Filter::ConvertEncodingToType("deflate"));
   EXPECT_EQ(Filter::FILTER_TYPE_DEFLATE,
             Filter::ConvertEncodingToType("deflAte"));
   EXPECT_EQ(Filter::FILTER_TYPE_GZIP,
@@ skipping 318 matching lines @@
 
   // Except on downloads, where they just get saved.
   encoding_types.clear();
   encoding_types.push_back(Filter::FILTER_TYPE_GZIP);
   filter_context.SetDownload(true);
   filter_context.SetMimeType(kHtmlMime);
   filter_context.SetURL(GURL(kGzUrl));
   Filter::FixupEncodingTypes(filter_context, &encoding_types);
   EXPECT_TRUE(encoding_types.empty());
 }
+
+}  // namespace net