Refactor our SimpleIndex file format and serialization to use Pickle instead of the previously bugg…

net/disk_cache/simple/simple_entry_format.cc

Index: net/disk_cache/simple/simple_entry_format.cc
diff --git a/chrome/browser/ui/views/frame/taskbar_decorator.cc b/net/disk_cache/simple/simple_entry_format.cc
similarity index 39%
copy from chrome/browser/ui/views/frame/taskbar_decorator.cc
copy to net/disk_cache/simple/simple_entry_format.cc
index 7bef2a4fa9e77b46ae05badcc7002f9f0583f0fc..340889311d052389d38336c9b93416a8611247b2 100644
--- a/chrome/browser/ui/views/frame/taskbar_decorator.cc
+++ b/net/disk_cache/simple/simple_entry_format.cc
@@ -2,11 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/ui/views/frame/taskbar_decorator.h"
+#include "net/disk_cache/simple/simple_entry_format.h"
 
-namespace chrome {
+#include <cstring>
 
-void DrawTaskbarDecoration(gfx::NativeWindow window, const gfx::Image* image) {
+namespace disk_cache {
+
+SimpleFileHeader::SimpleFileHeader() {
+  // Make hashing repeatable: leave no padding bytes untouched.
+  std::memset(this, 0, sizeof(*this));
 }
 
-}  // namespace chrome
+}  // namespace disk_cache