Delete the non-static CLD data source logic.

components/translate/content/renderer/renderer_cld_data_provider_factory.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.
-
-// NOT DEAD CODE!
-// This code isn't dead, even if it isn't currently being used. Please refer to:
-// https://www.chromium.org/developers/how-tos/compact-language-detector-cld-data-source-configuration
-
-#include "components/translate/content/renderer/renderer_cld_data_provider_factory.h"
-
-#include "base/lazy_instance.h"
-#include "base/memory/ptr_util.h"
-#include "components/translate/content/renderer/renderer_cld_data_provider.h"
-#include "content/public/renderer/render_frame_observer.h"
-
-namespace {
-
-// The global instance, alive for the entire lifetime of the process.
-translate::RendererCldDataProviderFactory* g_instance = NULL;
-
-// The default factory, which produces no-op instances of
-// RendererCldDataProvider suitable for use when CLD data is statically-linked.
-base::LazyInstance<translate::RendererCldDataProviderFactory>::Leaky
-  g_wrapped_default = LAZY_INSTANCE_INITIALIZER;
-
-}  // namespace
-
-
-namespace translate {
-
-std::unique_ptr<RendererCldDataProvider>
-RendererCldDataProviderFactory::CreateRendererCldDataProvider(
-    content::RenderFrameObserver* render_frame_observer) {
-  return base::WrapUnique(new RendererCldDataProvider());
-}
-
-// static
-bool RendererCldDataProviderFactory::IsInitialized() {
-  return g_instance != nullptr;
-}
-
-// static
-void RendererCldDataProviderFactory::SetDefault(
-    RendererCldDataProviderFactory* instance) {
-  if (!IsInitialized()) Set(instance);
-}
-
-// static
-void RendererCldDataProviderFactory::Set(
-    RendererCldDataProviderFactory* instance) {
-    g_instance = instance;
-}
-
-// static
-RendererCldDataProviderFactory* RendererCldDataProviderFactory::Get() {
-  if (IsInitialized()) return g_instance;
-  return &g_wrapped_default.Get();
-}
-
-}  // namespace translate