Validate hash_sha256 checksum on .crx update.

extensions/browser/crx_file_info.cc

Index: extensions/browser/crx_file_info.cc
diff --git a/extensions/browser/crx_file_info.cc b/extensions/browser/crx_file_info.cc
new file mode 100644
index 0000000000000000000000000000000000000000..560f95f08604125288f115c1b73c77f406b26554
--- /dev/null
+++ b/extensions/browser/crx_file_info.cc
@@ -0,0 +1,36 @@
+// Copyright (c) 2015 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 "extensions/browser/crx_file_info.h"
+
+#include "base/logging.h"
+
+namespace extensions {
+
+CRXFileInfo::CRXFileInfo() : path() {
+}
+
+CRXFileInfo::CRXFileInfo(const std::string& i,
+                         const base::FilePath& p,
+                         const std::string& h)
+    : extension_id(i), path(p), hash(h) {
+  DCHECK(!path.empty());
+}
+
+CRXFileInfo::CRXFileInfo(const std::string& i, const base::FilePath& p)
+    : extension_id(i), path(p), hash() {
+  DCHECK(!path.empty());
+}
+
+CRXFileInfo::CRXFileInfo(const base::FilePath& p)
+    : extension_id(), path(p), hash() {
+  DCHECK(!path.empty());
+}
+
+bool CRXFileInfo::operator==(const CRXFileInfo& that) const {
+  return extension_id == that.extension_id && path == that.path &&
+         hash == that.hash;
+}
+
+}  // namespace extensions