Enforces order for settings reset

chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_controller.cc

 // Copyright 2017 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/safe_browsing/settings_reset_prompt/settings_reset_prompt_controller.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 89 matching lines @@
 
   model->ReportUmaMetrics();
 
   if (!model->ShouldPromptForReset())
     return;
 
   DefaultSettingsFetcher::FetchDefaultSettings(
       base::Bind(&TryToShowSettingsResetPrompt, base::Passed(&model)));
 }
 
+class SettingsResetPromptDelegateImpl : public SettingsResetPromptDelegate {
+ public:
+  SettingsResetPromptDelegateImpl();
+  ~SettingsResetPromptDelegateImpl() override;
+
+  void ShowSettingsResetPromptWithDelay() const override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SettingsResetPromptDelegateImpl);
+};
+
+SettingsResetPromptDelegateImpl::SettingsResetPromptDelegateImpl() = default;
+
+SettingsResetPromptDelegateImpl::~SettingsResetPromptDelegateImpl() = default;
+
+void SettingsResetPromptDelegateImpl::ShowSettingsResetPromptWithDelay() const {
+  std::unique_ptr<SettingsResetPromptConfig> config =
+      SettingsResetPromptConfig::Create();
+  if (!config)
+    return;
+
+  base::TimeDelta delay = config->delay_before_prompt();
+  content::BrowserThread::PostDelayedTask(
+      content::BrowserThread::UI, FROM_HERE,
+      base::BindOnce(MaybeShowSettingsResetPrompt, base::Passed(&config)),
+      delay);
+}
+
+SettingsResetPromptDelegate* g_settings_reset_prompt_delegate = nullptr;
+
 }  // namespace.
 
 SettingsResetPromptController::SettingsResetPromptController(
     std::unique_ptr<SettingsResetPromptModel> model,
     std::unique_ptr<BrandcodedDefaultSettings> default_settings)
     : model_(std::move(model)), default_settings_(std::move(default_settings)) {
   DCHECK(model_);
   DCHECK(model_->ShouldPromptForReset());
   DCHECK(default_settings_);
 
@@ skipping 130 matching lines @@
 
   main_text_url_range_.set_start(offset);
   main_text_url_range_.set_end(offset + url_string.length());
 }
 
 void SettingsResetPromptController::OnInteractionDone() {
   delete this;
 }
 
 void MaybeShowSettingsResetPromptWithDelay() {
-  std::unique_ptr<SettingsResetPromptConfig> config =
-      SettingsResetPromptConfig::Create();
-  if (!config)
-    return;
+  if (g_settings_reset_prompt_delegate) {
+    g_settings_reset_prompt_delegate->ShowSettingsResetPromptWithDelay();
+  } else {
+    SettingsResetPromptDelegateImpl().ShowSettingsResetPromptWithDelay();
+  }
+}
 
-  base::TimeDelta delay = config->delay_before_prompt();
-  content::BrowserThread::PostDelayedTask(
-      content::BrowserThread::UI, FROM_HERE,
-      base::BindOnce(MaybeShowSettingsResetPrompt, base::Passed(&config)),
-      delay);
+SettingsResetPromptDelegate::SettingsResetPromptDelegate() = default;
+
+SettingsResetPromptDelegate::~SettingsResetPromptDelegate() = default;
+
+void SetSettingsResetPromptDelegate(SettingsResetPromptDelegate* delegate) {
+  g_settings_reset_prompt_delegate = delegate;
 }
 
 }  // namespace safe_browsing