cros: Replace BrowserThread::FILE in InputServiceProxy

chrome/browser/chromeos/device/input_service_test_helper.cc

Index: chrome/browser/chromeos/device/input_service_test_helper.cc
diff --git a/chrome/browser/chromeos/device/input_service_test_helper.cc b/chrome/browser/chromeos/device/input_service_test_helper.cc
index 7cc5e87b56eb22f9e330e5a6eb71028e4f3c42a2..2379f30db0e159ca6649cdff727110073ac89ea0 100644
--- a/chrome/browser/chromeos/device/input_service_test_helper.cc
+++ b/chrome/browser/chromeos/device/input_service_test_helper.cc
@@ -8,11 +8,9 @@
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "chrome/browser/chromeos/device/input_service_proxy.h"
-#include "content/public/browser/browser_thread.h"
 #include "device/hid/fake_input_service_linux.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using content::BrowserThread;
 using device::InputServiceLinux;
 using device::FakeInputServiceLinux;
 
@@ -20,17 +18,17 @@ namespace chromeos {
 
 namespace {
 
-void InitInputServiceOnFileThread() {
+void InitInputServiceOnInputServiceThread() {

[fdoray, 2017/06/20 12:42:39]

InitInputServiceOnInputServiceSequence

Since you plan to change the LazySingleThreadTaskRunner to a
LazySequencedTaskRunner and a thread is a special kind of sequence.

[xiyuan, 2017/06/20 15:26:55]

Done.

   InputServiceLinux::SetForTesting(base::MakeUnique<FakeInputServiceLinux>());
 }
 
-void AddDeviceOnFileThread(const InputDeviceInfo& device) {
+void AddDeviceOnInputServiceThread(const InputDeviceInfo& device) {

[fdoray, 2017/06/20 12:42:39]

AddDeviceOnInputServiceSequence

[xiyuan, 2017/06/20 15:26:55]

Done.

   FakeInputServiceLinux* service =
       static_cast<FakeInputServiceLinux*>(InputServiceLinux::GetInstance());
   service->AddDeviceForTesting(device);
 }
 
-void RemoveDeviceOnFileThread(const std::string& id) {
+void RemoveDeviceOnInputServiceThread(const std::string& id) {

[fdoray, 2017/06/20 12:42:39]

RemoveDeviceOnInputServiceSequence

[xiyuan, 2017/06/20 15:26:55]

Done.

   FakeInputServiceLinux* service =
       static_cast<FakeInputServiceLinux*>(InputServiceLinux::GetInstance());
   service->RemoveDeviceForTesting(id);
@@ -118,8 +116,8 @@ const char InputServiceTestHelper::kKeyboardId[] = "keyboard";
 const char InputServiceTestHelper::kMouseId[] = "mouse";
 
 InputServiceTestHelper::InputServiceTestHelper() : observer_(new TestObserver) {
-  BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
-                          base::Bind(&InitInputServiceOnFileThread));
+  InputServiceProxy::GetInputServiceTaskRunner()->PostTask(
+      FROM_HERE, base::Bind(&InitInputServiceOnInputServiceThread));
 }
 
 InputServiceTestHelper::~InputServiceTestHelper() {}
@@ -142,15 +140,15 @@ void InputServiceTestHelper::AddDeviceToService(bool is_mouse,
   device.type = type;
   device.is_mouse = is_mouse;
   device.is_keyboard = !is_mouse;
-  BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
-                          base::Bind(&AddDeviceOnFileThread, device));
+  InputServiceProxy::GetInputServiceTaskRunner()->PostTask(
+      FROM_HERE, base::Bind(&AddDeviceOnInputServiceThread, device));
   observer_->WaitForDeviceAddition(device);
 }
 
 void InputServiceTestHelper::RemoveDeviceFromService(bool is_mouse) {
   std::string id = is_mouse ? kMouseId : kKeyboardId;
-  BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
-                          base::Bind(&RemoveDeviceOnFileThread, id));
+  InputServiceProxy::GetInputServiceTaskRunner()->PostTask(
+      FROM_HERE, base::Bind(&RemoveDeviceOnInputServiceThread, id));
   observer_->WaitForDeviceRemoval(id);
 }