Move RegisterContentSchemes from public url_constants into non-public url_schemes.

content/common/url_schemes.cc

+// Copyright (c) 2012 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/common/url_schemes.h"
+
+#include <string.h>
+
+#include <algorithm>
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/string_util.h"
+#include "content/common/savable_url_schemes.h"
+#include "content/public/common/content_client.h"
+#include "content/public/common/url_constants.h"
+#include "googleurl/src/url_util.h"
+
+namespace {
+
+void AddStandardSchemeHelper(const std::string& scheme) {
+  url_util::AddStandardScheme(scheme.c_str());
+}
+
+}  // namespace
+
+namespace content {
+
+void RegisterContentSchemes(bool lock_standard_schemes) {
+  std::vector<std::string> additional_standard_schemes;
+  std::vector<std::string> additional_savable_schemes;
+  GetContentClient()->AddAdditionalSchemes(
+       &additional_standard_schemes,
+       &additional_savable_schemes);
+
+  // Don't need "chrome-internal" which was used in old versions of Chrome for
+  // the new tab page.
+  url_util::AddStandardScheme(chrome::kChromeDevToolsScheme);
+  url_util::AddStandardScheme(chrome::kChromeUIScheme);
+  url_util::AddStandardScheme(chrome::kMetadataScheme);
+  std::for_each(additional_standard_schemes.begin(),
+                additional_standard_schemes.end(),
+                AddStandardSchemeHelper);
+
+  // Prevent future modification of the standard schemes list. This is to
+  // prevent accidental creation of data races in the program. AddStandardScheme
+  // isn't threadsafe so must be called when GURL isn't used on any other
+  // thread. This is really easy to mess up, so we say that all calls to
+  // AddStandardScheme in Chrome must be inside this function.
+  if (lock_standard_schemes)
+    url_util::LockStandardSchemes();
+
+  // We rely on the above lock to protect this part from being invoked twice.
+  if (!additional_savable_schemes.empty()) {
+    const char* const* default_schemes = GetSavableSchemesInternal();
+    const char* const* default_schemes_end = NULL;
+    for (default_schemes_end = default_schemes; *default_schemes_end;
+         ++default_schemes_end) {}
+    const int default_schemes_count = default_schemes_end - default_schemes;
+
+    int schemes = static_cast<int>(additional_savable_schemes.size());
+    // The array, and the copied schemes won't be freed, but will remain
+    // reachable.
+    char **savable_schemes = new char*[schemes + default_schemes_count + 1];
+    memcpy(savable_schemes,
+           default_schemes,
+           default_schemes_count * sizeof(default_schemes[0]));
+    for (int i = 0; i < schemes; ++i) {
+      savable_schemes[default_schemes_count + i] =
+          base::strdup(additional_savable_schemes[i].c_str());
+    }
+    savable_schemes[default_schemes_count + schemes] = 0;
+
+    SetSavableSchemes(savable_schemes);
+  }
+}
+
+}  // namespace content