[translate] Fix shutdown race for translate ranker model loader.

chrome/browser/translate/translate_manager_render_view_host_unittest.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 <stddef.h>
 
 #include <algorithm>
 #include <memory>
 #include <set>
 #include <tuple>
@@ skipping 42 matching lines @@
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/browser_side_navigation_policy.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/test/test_renderer_host.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "net/base/net_errors.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "net/url_request/url_request_status.h"
+#include "net/url_request/url_request_test_util.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "third_party/WebKit/public/web/WebContextMenuData.h"
 #include "url/gurl.h"
 
 #if !defined(USE_AURA)
 #include "components/translate/core/browser/translate_infobar_delegate.h"
 #endif
 
 namespace {
 
@@ skipping 374 matching lines @@
     DCHECK_EQ(chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED, type);
     removed_infobars_.insert(
         content::Details<infobars::InfoBar::RemovedDetails>(
             details)->first->delegate());
   }
 
   MOCK_METHOD1(OnPreferenceChanged, void(const std::string&));
 
  protected:
   virtual void SetUp() {
-    TranslateService::InitializeForTesting();
+    // Setup the test environment, including the threads and message loops. This
+    // must be done before base::ThreadTaskRunnerHandle::Get() is called when
+    // setting up the net::TestURLRequestContextGetter below.
+    ChromeRenderViewHostTestHarness::SetUp();
 
-    // Clears the translate script so it is fetched everytime and sets the
+    // Clears the translate script so it is fetched every time and sets the
     // expiration delay to a large value by default (in case it was zeroed in a
     // previous test).
+    TranslateService::InitializeForTesting();
     translate::TranslateDownloadManager* download_manager =
         translate::TranslateDownloadManager::GetInstance();
     download_manager->ClearTranslateScriptForTesting();
     download_manager->SetTranslateScriptExpirationDelay(60 * 60 * 1000);
+    download_manager->set_request_context(new net::TestURLRequestContextGetter(
+        base::ThreadTaskRunnerHandle::Get()));
 
-    ChromeRenderViewHostTestHarness::SetUp();
     InfoBarService::CreateForWebContents(web_contents());
     ChromeTranslateClient::CreateForWebContents(web_contents());
     ChromeTranslateClient::FromWebContents(web_contents())
         ->translate_driver()
         .set_translate_max_reload_attempts(0);
 
     notification_registrar_.Add(
         this,
         chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED,
         content::Source<InfoBarService>(infobar_service()));
@@ skipping 1269 matching lines @@
 
   // Check the bubble exists instead of the infobar.
   translate::TranslateInfoBarDelegate* infobar = GetTranslateInfoBar();
   ASSERT_TRUE(infobar == NULL);
   TranslateBubbleModel* bubble = factory->model();
   ASSERT_TRUE(bubble != NULL);
   EXPECT_EQ(TranslateBubbleModel::VIEW_STATE_TRANSLATING,
             bubble->GetViewState());
 }
 #endif  // defined(USE_AURA)