Refactor language detection logic to allow non-static CLD data sources.

components/translate/content/browser/browser_cld_utils.cc

+// 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 "components/translate/content/browser/browser_cld_utils.h"
+
+#include "components/translate/content/browser/browser_cld_data_provider_factory.h"
+#include "components/translate/content/common/cld_data_source.h"
+
+namespace translate {
+
+// static
+void BrowserCldUtils::ConfigureDefaultDataProvider() {
+  if (!BrowserCldDataProviderFactory::IsInitialized()) {
+    BrowserCldDataProviderFactory* factory = NULL;
+    CldDataSource* data_source = NULL;
+
+    // Maintainers: Customize platform defaults here as necessary.
+    // It is appropriate to ifdef this code and customize per-platform.
+    //
+    // Remember to update GYP/GN dependencies of high-level targets as well:
+    // - For the NONE or STATIC data sources, depend upon
+    //   third_party/cld_2/cld_2.gyp:cld2_static.
+    // - For the COMPONENT or STANDALONE data sources, depend upon
+    //   third_party/cld_2/cld_2.gyp:cld2_dynamic.
+    // - For any other sources, the embedder should already have set a factory
+    //   and so this code should never be invoked.
+    // -----------------------------------------------------------------------
+    factory = new BrowserCldDataProviderFactory();
+    data_source = CldDataSource::GetStaticDataSource();
+    // -----------------------------------------------------------------------
+
+    // Apply the values defined above
+    BrowserCldDataProviderFactory::SetDefault(factory);
+    CldDataSource::SetDefault(data_source);
+  }
+}
+
+}  // namespace translate