Reduce/remove usage of BrowserThread in content/browser/loader.

content/public/test/test_renderer_host.cc

 // Copyright (c) 2012 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 "content/public/test/test_renderer_host.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "content/browser/compositor/test/no_transport_image_transport_factory.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
+#include "content/browser/loader/loader_globals.h"
 #include "content/browser/renderer_host/render_view_host_factory.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/site_instance_impl.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/browser_side_navigation_policy.h"
 #include "content/public/test/browser_side_navigation_test_utils.h"
 #include "content/public/test/mock_render_process_host.h"
 #include "content/public/test/test_browser_context.h"
 #include "content/test/content_browser_sanity_checker.h"
@@ skipping 126 matching lines @@
   // RenderWidgetHostView holds on to a reference to SurfaceManager, so it
   // must be shut down before the ImageTransportFactory.
   ImageTransportFactory::Terminate();
 #else
   display::Screen::SetScreenInstance(nullptr);
 #endif
 }
 
 
 // RenderViewHostTestHarness --------------------------------------------------
-
 RenderViewHostTestHarness::RenderViewHostTestHarness()
     : thread_bundle_options_(TestBrowserThreadBundle::DEFAULT) {}
 
 RenderViewHostTestHarness::~RenderViewHostTestHarness() {
 }
 
 NavigationController& RenderViewHostTestHarness::controller() {
   return web_contents()->GetController();
 }
 
@@ skipping 105 matching lines @@
 
   sanity_checker_.reset(new ContentBrowserSanityChecker());
 
   DCHECK(!browser_context_);
   browser_context_.reset(CreateBrowserContext());
 
   SetContents(CreateTestWebContents());
 
   if (IsBrowserSideNavigationEnabled())
     BrowserSideNavigationSetUp();
+
+  // TODO(ananta)
+  // Tests which use the RenderViewHostTestHarness can run
+  // content/browser/loader code which assumes UI thread, IO thread task runner
+  // availability. As a workaround we instantiate the
+  // content/browser/loader/LoaderGlobals class which provides access to these
+  // task runners to the relevant code. This hack will go away when the loader
+  // code becomes part of the network service. We don't want to create the
+  // LoaderGlobals class if it already exists.
+  if (!LoaderGlobals::Get()) {
+    loader_globals_.reset(new content::LoaderGlobals(
+        BrowserThread::GetTaskRunnerForThread(BrowserThread::UI),
+        BrowserThread::GetTaskRunnerForThread(BrowserThread::IO)));
+  }
 }
 
 void RenderViewHostTestHarness::TearDown() {
   if (IsBrowserSideNavigationEnabled())
     BrowserSideNavigationTearDown();
 
   SetContents(NULL);
 #if defined(USE_AURA)
   aura_test_helper_->TearDown();
   ui::TerminateContextFactoryForTests();
@@ skipping 28 matching lines @@
 
 void RenderViewHostTestHarness::SetRenderProcessHostFactory(
     RenderProcessHostFactory* factory) {
   if (rvh_test_enabler_)
     rvh_test_enabler_->rvh_factory_->set_render_process_host_factory(factory);
   else
     factory_ = factory;
 }
 
 }  // namespace content