1 files changed, 33 insertions, 0 deletions
diff --git a/chrome/browser/ui/browser_iterator.cc b/chrome/browser/ui/browser_iterator.cc
new file mode 100644
index 0000000..73571d5
--- /dev/null
+++ b/chrome/browser/ui/browser_iterator.cc
@@ -0,0 +1,33 @@
+// Copyright (c) 2013 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 "chrome/browser/ui/browser_iterator.h"
+
+namespace chrome {
+
+BrowserIterator::BrowserIterator()
+    : current_browser_list_(
+          BrowserListImpl::GetInstance(HOST_DESKTOP_TYPE_FIRST)),
+      current_iterator_(current_browser_list_->begin()),
+      next_desktop_type_(
+          static_cast<HostDesktopType>(HOST_DESKTOP_TYPE_FIRST + 1)) {
+  NextBrowserListIfAtEnd();
+}
+
+void BrowserIterator::Next() {
+  ++current_iterator_;
+  NextBrowserListIfAtEnd();
+}
+
+void BrowserIterator::NextBrowserListIfAtEnd() {
+  // Make sure either |current_iterator_| is valid or done().
+  while (current_iterator_ == current_browser_list_->end() &&
+         next_desktop_type_ < HOST_DESKTOP_TYPE_COUNT) {
+    current_browser_list_ = BrowserListImpl::GetInstance(next_desktop_type_);
+    current_iterator_ = current_browser_list_->begin();
+    next_desktop_type_ = static_cast<HostDesktopType>(next_desktop_type_ + 1);
+  }
+}
+
+}  // namespace chrome