Delete the non-static CLD data source logic.

chrome/browser/translate/cld_data_harness_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.
-
-#include "chrome/browser/translate/cld_data_harness_factory.h"
-
-#include "base/lazy_instance.h"
-#include "chrome/browser/translate/component_cld_data_harness.h"
-#include "chrome/browser/translate/standalone_cld_data_harness.h"
-#include "components/translate/content/browser/browser_cld_utils.h"
-#include "components/translate/content/common/cld_data_source.h"
-
-namespace {
-
-// This is the global instance managed by Get/Set
-test::CldDataHarnessFactory* g_instance = NULL;
-
-// The following three instances are used to "cheat" in Create(). Each of them
-// is just an instance of this class, but because they are singletons they can
-// be compared using "this" to pick different behaviors in Create() at runtime.
-// This avoids the need to explicitly define boilerplate classes with no
-// significant value.
-//
-// Embedders can of course specify a different implementation of this class
-// using Set(CldDataHarnessFactory*), in which case Create() will have whatever
-// custom behavior is desired.
-base::LazyInstance<test::CldDataHarnessFactory>::Leaky g_wrapped_component =
-    LAZY_INSTANCE_INITIALIZER;
-base::LazyInstance<test::CldDataHarnessFactory>::Leaky g_wrapped_standalone =
-    LAZY_INSTANCE_INITIALIZER;
-base::LazyInstance<test::CldDataHarnessFactory>::Leaky g_wrapped_static =
-    LAZY_INSTANCE_INITIALIZER;
-
-}  // namespace
-
-namespace test {
-
-std::unique_ptr<CldDataHarness> CldDataHarnessFactory::CreateCldDataHarness() {
-  // Cheat: Since the three "canned" implementations are all well-known, just
-  // check to see if "this" points to one of the singletons and then return
-  // the right answer. Embedder-provided CldDataHarnessFactory implementations
-  // will of course not have this behavior.
-  if (this == GetStaticDataHarnessFactory()) {
-    return CldDataHarness::CreateStaticDataHarness();
-  }
-  if (this == GetStandaloneDataHarnessFactory()) {
-    return CldDataHarness::CreateStandaloneDataHarness();
-  }
-  if (this == GetComponentDataHarnessFactory()) {
-    return CldDataHarness::CreateComponentDataHarness();
-  }
-
-  // Embedder did something wrong, failed to override this method.
-  NOTREACHED() << "Subclass failed to override CreateCldDataHarness()";
-  return CldDataHarness::CreateStaticDataHarness();
-}
-
-CldDataHarnessFactory* CldDataHarnessFactory::Get() {
-  // First honor any factory set by the embedder.
-  if (g_instance != NULL) return g_instance;
-
-  // Fall back to defaults: try to find a compatible harness for the currently-
-  // configured CldDataSource.
-  translate::BrowserCldUtils::ConfigureDefaultDataProvider();
-  if (translate::CldDataSource::IsUsingStaticDataSource()) {
-    return GetStaticDataHarnessFactory();
-  }
-  if (translate::CldDataSource::IsUsingComponentDataSource()) {
-    return GetComponentDataHarnessFactory();
-  }
-  if (translate::CldDataSource::IsUsingStandaloneDataSource()) {
-    return GetStandaloneDataHarnessFactory();
-  }
-
-  // The CldDataSource must have been set by an embedder, but the embedder has
-  // not configured a corresponding CldDataHarnessFactory. This is an error; the
-  // embedder must specify a harness that works with the corresponding
-  // CldDataSource. Crash for debug builds and return a no-op harness for
-  // everything else.
-  NOTREACHED() << "No CLD data harness factory was configured!";
-  return GetStaticDataHarnessFactory();
-}
-
-// static
-void CldDataHarnessFactory::Set(CldDataHarnessFactory* instance) {
-  g_instance = instance;
-}
-
-// static
-CldDataHarnessFactory*
-CldDataHarnessFactory::GetStaticDataHarnessFactory() {
-  return &g_wrapped_static.Get();
-}
-
-// static
-CldDataHarnessFactory*
-CldDataHarnessFactory::GetStandaloneDataHarnessFactory() {
-  return &g_wrapped_standalone.Get();
-}
-
-// static
-CldDataHarnessFactory*
-CldDataHarnessFactory::GetComponentDataHarnessFactory() {
-  return &g_wrapped_component.Get();
-}
-
-}  // namespace test