Add histograms to track the size of the profile data....

base/file_util_unittest.cc

 // Copyright (c) 2010 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 "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <winioctl.h>
 #include <shellapi.h>
@@ skipping 445 matching lines @@
   EXPECT_EQ(30ll, size_f2);
 
   FilePath subsubdir_path = subdir_path.Append(FPL("Level3"));
   file_util::CreateDirectory(subsubdir_path);
 
   FilePath file_03 = subsubdir_path.Append(FPL("The file 03.txt"));
   CreateTextFile(file_03, L"123");
 
   int64 computed_size = file_util::ComputeDirectorySize(test_dir_);
   EXPECT_EQ(size_f1 + size_f2 + 3, computed_size);
+
+  computed_size = file_util::ComputeFilesSize(test_dir_, FPL("The file*"));
+  EXPECT_EQ(size_f1, computed_size);
+
+  computed_size = file_util::ComputeFilesSize(test_dir_, FPL("bla*"));
+  EXPECT_EQ(0, computed_size);
 }
 
 TEST_F(FileUtilTest, NormalizeFilePathBasic) {
   // Create a directory under the test dir.  Because we create it,
   // we know it is not a link.
   FilePath file_a_path = test_dir_.Append(FPL("file_a"));
   FilePath dir_path = test_dir_.Append(FPL("dir"));
   FilePath file_b_path = dir_path.Append(FPL("file_b"));
   file_util::CreateDirectory(dir_path);
 
@@ skipping 1366 matching lines @@
   EXPECT_TRUE(file_util::IsDirectoryEmpty(empty_dir));
 
   FilePath foo(empty_dir.Append(FILE_PATH_LITERAL("foo.txt")));
   std::string bar("baz");
   ASSERT_TRUE(file_util::WriteFile(foo, bar.c_str(), bar.length()));
 
   EXPECT_FALSE(file_util::IsDirectoryEmpty(empty_dir));
 }
 
 }  // namespace