content: Extract url utility functions into url_utils.{h,cc}

content/public/common/url_utils.cc

+// Copyright 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 "content/public/common/url_utils.h"
+
+#include "build/build_config.h"
+#include "content/common/savable_url_schemes.h"
+#include "content/public/common/url_constants.h"
+#include "googleurl/src/gurl.h"
+
+namespace content {
+
+const char* const* GetSavableSchemes() {
+  return GetSavableSchemesInternal();
+}
+
+bool HasWebUIScheme(const GURL& url) {
+  return
+#if !defined(OS_IOS)
+         url.SchemeIs(chrome::kChromeDevToolsScheme) ||
+         url.SchemeIs(chrome::kChromeInternalScheme) ||
+#endif
+         url.SchemeIs(chrome::kChromeUIScheme);
+}
+
+bool IsSavableURL(const GURL& url) {
+  for (int i = 0; GetSavableSchemes()[i] != NULL; ++i) {
+    if (url.SchemeIs(GetSavableSchemes()[i]))
+      return true;
+  }
+  return false;
+}
+
+}  // namespace content