Move code in components/safe_browsing_db and chrome/browser/s_b/ under the safe_browsing namespace.

chrome/browser/safe_browsing/chunk_range_unittest.cc

 // Copyright (c) 2006-2008 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.
 //
 // Test program to convert lists of integers into ranges, and vice versa.
 
 #include "chrome/browser/safe_browsing/chunk_range.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace safe_browsing {
+
 // Test various configurations of chunk numbers.
 TEST(SafeBrowsingChunkRangeTest, TestChunksToRangeString) {
   std::vector<int> chunks;
   std::string range_string;
 
   // Test one chunk range and one single value.
   chunks.push_back(1);
   chunks.push_back(2);
   chunks.push_back(3);
   chunks.push_back(4);
@@ skipping 135 matching lines @@
   EXPECT_TRUE(IsChunkInRange(7, ranges));
   EXPECT_TRUE(IsChunkInRange(300, ranges));
   EXPECT_TRUE(IsChunkInRange(555, ranges));
   EXPECT_TRUE(IsChunkInRange(1, ranges));
   EXPECT_TRUE(IsChunkInRange(1000, ranges));
 
   EXPECT_FALSE(IsChunkInRange(11, ranges));
   EXPECT_FALSE(IsChunkInRange(990, ranges));
   EXPECT_FALSE(IsChunkInRange(2000, ranges));
 }
+
+}  // namespace safe_browsing