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

base/file_util.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 "base/file_util.h"
 
 #if defined(OS_WIN)
 #include <io.h>
 #endif
 #include <stdio.h>
@@ skipping 250 matching lines @@
 #if defined(OS_WIN)
     LARGE_INTEGER li = { info.nFileSizeLow, info.nFileSizeHigh };
     running_size += li.QuadPart;
 #else
     running_size += info.stat.st_size;
 #endif
   }
   return running_size;
 }
 
+int64 ComputeFilesSize(const FilePath& directory,
+                       const FilePath::StringType& pattern) {
+  int64 running_size = 0;
+  FileEnumerator file_iter(directory, false, FileEnumerator::FILES, pattern);
+  for (FilePath current = file_iter.Next(); !current.empty();
+       current = file_iter.Next()) {
+    FileEnumerator::FindInfo info;
+    file_iter.GetFindInfo(&info);
+#if defined(OS_WIN)
+    LARGE_INTEGER li = { info.nFileSizeLow, info.nFileSizeHigh };
+    running_size += li.QuadPart;
+#else
+    running_size += info.stat.st_size;
+#endif
+  }
+  return running_size;
+}
+
 ///////////////////////////////////////////////
 // MemoryMappedFile
 
 MemoryMappedFile::~MemoryMappedFile() {
   CloseHandles();
 }
 
 bool MemoryMappedFile::Initialize(base::PlatformFile file) {
   if (IsValid())
     return false;
@@ skipping 124 matching lines @@
 // FileEnumerator
 //
 // Note: the main logic is in file_util_<platform>.cc
 
 bool FileEnumerator::ShouldSkip(const FilePath& path) {
   FilePath::StringType basename = path.BaseName().value();
   return IsDot(path) || (IsDotDot(path) && !(INCLUDE_DOT_DOT & file_type_));
 }
 
 }  // namespace