Add facility to fix about: and file: links from chrome:// pages.

chrome/browser/dom_ui/generic_handler.cc

Index: chrome/browser/dom_ui/generic_handler.cc
diff --git a/chrome/browser/dom_ui/generic_handler.cc b/chrome/browser/dom_ui/generic_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ec1d185b0a77e4fd66d3ba130e9b7272af973099
--- /dev/null
+++ b/chrome/browser/dom_ui/generic_handler.cc
@@ -0,0 +1,52 @@
+// Copyright (c) 2011 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/dom_ui/generic_handler.h"
+
+#include "base/logging.h"
+#include "base/values.h"
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "googleurl/src/gurl.h"
+
+GenericHandler::GenericHandler() {
+}
+
+GenericHandler::~GenericHandler() {
+}
+
+void GenericHandler::RegisterMessages() {
+  dom_ui_->RegisterMessageCallback("navigateToUrl",
+      NewCallback(this, &GenericHandler::HandleNavigateToUrl));
+}
+
+void GenericHandler::HandleNavigateToUrl(const ListValue* args) {
+  std::string url_string;
+  CHECK(args->GetString(0, &url_string));
+  std::string button_string;
+  CHECK(args->GetString(1, &button_string));
+  CHECK(button_string == "0" || button_string == "1");
+  std::string ctrl_string;
+  CHECK(args->GetString(2, &ctrl_string));
+  std::string shift_string;
+  CHECK(args->GetString(3, &shift_string));
+  std::string alt_string;
+  CHECK(args->GetString(4, &alt_string));
+
+  // TODO(estade): This logic is replicated in 4 places throughout chrome.
+  // It would be nice to centralize it.
+  WindowOpenDisposition disposition;
+  if (button_string == "1" || ctrl_string == "true") {
+    disposition = shift_string == "true" ?
+        NEW_FOREGROUND_TAB : NEW_BACKGROUND_TAB;
+  } else if (shift_string == "true") {
+    disposition = NEW_WINDOW;
+  } else {
+    disposition = alt_string == "true" ? SAVE_TO_DISK : CURRENT_TAB;
+  }
+
+  dom_ui_->tab_contents()->OpenURL(
+      GURL(url_string), GURL(), disposition, PageTransition::LINK);
+
+  // This may delete us!
+}