[Android] Rewrite old-style NTP URLs to new-style URLs.

chrome/browser/android/new_tab_page_url_handler.cc

Index: chrome/browser/android/new_tab_page_url_handler.cc
diff --git a/chrome/browser/android/new_tab_page_url_handler.cc b/chrome/browser/android/new_tab_page_url_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7ea759360aed16d050b293b01bb1795a250ab567
--- /dev/null
+++ b/chrome/browser/android/new_tab_page_url_handler.cc
@@ -0,0 +1,48 @@
+// Copyright 2014 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/android/new_tab_page_url_handler.h"
+
+#include <string>
+
+#include "base/strings/string_util.h"
+#include "chrome/common/url_constants.h"
+#include "content/public/common/url_constants.h"
+#include "url/gurl.h"
+
+namespace {
+const char kLegacyBookmarksFragment[] = "bookmarks";
+const char kLegacyOpenTabsFragment[] = "open_tabs";
+const char kLegacyRecentTabsHost[] = "recent_tabs";
+}
+
+namespace chrome {
+namespace android {
+
+bool HandleAndroidNewTabURL(GURL* url,
+                            content::BrowserContext* browser_context) {
+  if (url->SchemeIs(content::kChromeUIScheme) &&
+      url->host() == chrome::kChromeUINewTabHost) {
+    std::string ref = url->ref();
+    if (StartsWithASCII(ref, kLegacyBookmarksFragment, true)) {
+      *url = GURL(chrome::kChromeUINativeBookmarksURL);
+    } else if (ref == kLegacyOpenTabsFragment) {
+      *url = GURL(chrome::kChromeUINativeRecentTabsURL);
+    } else {
+      *url = GURL(chrome::kChromeUINativeNewTabURL);
+    }
+    return true;
+  }
+
+  if (url->SchemeIs(chrome::kChromeNativeScheme) &&
+      url->host() == kLegacyRecentTabsHost) {
+    *url = GURL(chrome::kChromeUINativeRecentTabsURL);
+    return true;
+  }
+
+  return false;
+}
+
+}  // namespace android
+}  // namespace chrome