Adds more debugging code in hopes of figuring out why on dragging the

tab strip model is empty, but not the tab strip. The latest crash data
indicates the tab strip is not closing all.

BUG=24132
TEST=none

Review URL: http://codereview.chromium.org/375017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31450 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 35 insertions, 0 deletions

diff --git a/chrome/browser/state_tracker.cc b/chrome/browser/state_tracker.cc
new file mode 100644
index 0000000..03af631
--- /dev/null
+++ b/chrome/browser/state_tracker.cc
@@ -0,0 +1,35 @@
+// Copyright (c) 2009 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/state_tracker.h"
+
+// Number of characters the buffer contains.
+static const size_t kSize = 256;
+
+StateTracker::StateTracker()
+  : index_(0),
+    content_(new char[kSize]) {
+  for (size_t i = 0; i < kSize; ++i)
+    content_[i] = '\0';
+}
+
+void StateTracker::Append(const std::string& text) {
+  if (text.size() >= kSize) {
+    NOTREACHED();
+    return;
+  }
+  for (size_t i = 0; i < text.size(); ++i) {
+    content_[index_] = text[i];
+    index_ = (index_ + 1) % kSize;
+  }
+  content_[index_] = '!';
+}
+
+void StateTracker::Crash() {
+  volatile char state[kSize];
+  for (size_t i = 0; i < kSize; ++i)
+    state[i] = content_[i];
+
+  CHECK(false);
+}