Rename RootWindowHost* to WindowTreeHost*

ash/accelerators/accelerator_controller_unittest.cc

Index: ash/accelerators/accelerator_controller_unittest.cc
diff --git a/ash/accelerators/accelerator_controller_unittest.cc b/ash/accelerators/accelerator_controller_unittest.cc
index 8569171ca45d006d7066c931e666bd32c3ae8d78..189db909ebde7a1b11adf562f31db3d02fea8e40 100644
--- a/ash/accelerators/accelerator_controller_unittest.cc
+++ b/ash/accelerators/accelerator_controller_unittest.cc
@@ -654,32 +654,32 @@ TEST_F(AcceleratorControllerTest, MAYBE_ProcessOnce) {
 #if defined(OS_WIN)
   MSG msg1 = { NULL, WM_KEYDOWN, ui::VKEY_A, 0 };
   ui::TranslatedKeyEvent key_event1(msg1, false);
-  EXPECT_TRUE(dispatcher->AsRootWindowHostDelegate()->OnHostKeyEvent(
+  EXPECT_TRUE(dispatcher->AsWindowTreeHostDelegate()->OnHostKeyEvent(
       &key_event1));
 
   MSG msg2 = { NULL, WM_CHAR, L'A', 0 };
   ui::TranslatedKeyEvent key_event2(msg2, true);
-  EXPECT_FALSE(dispatcher->AsRootWindowHostDelegate()->OnHostKeyEvent(
+  EXPECT_FALSE(dispatcher->AsWindowTreeHostDelegate()->OnHostKeyEvent(
       &key_event2));
 
   MSG msg3 = { NULL, WM_KEYUP, ui::VKEY_A, 0 };
   ui::TranslatedKeyEvent key_event3(msg3, false);
-  EXPECT_FALSE(dispatcher->AsRootWindowHostDelegate()->OnHostKeyEvent(
+  EXPECT_FALSE(dispatcher->AsWindowTreeHostDelegate()->OnHostKeyEvent(
       &key_event3));
 #elif defined(USE_X11)
   ui::ScopedXI2Event key_event;
   key_event.InitKeyEvent(ui::ET_KEY_PRESSED, ui::VKEY_A, 0);
   ui::TranslatedKeyEvent key_event1(key_event, false);
-  EXPECT_TRUE(dispatcher->AsRootWindowHostDelegate()->OnHostKeyEvent(
+  EXPECT_TRUE(dispatcher->AsWindowTreeHostDelegate()->OnHostKeyEvent(
       &key_event1));
 
   ui::TranslatedKeyEvent key_event2(key_event, true);
-  EXPECT_FALSE(dispatcher->AsRootWindowHostDelegate()->OnHostKeyEvent(
+  EXPECT_FALSE(dispatcher->AsWindowTreeHostDelegate()->OnHostKeyEvent(
       &key_event2));
 
   key_event.InitKeyEvent(ui::ET_KEY_RELEASED, ui::VKEY_A, 0);
   ui::TranslatedKeyEvent key_event3(key_event, false);
-  EXPECT_FALSE(dispatcher->AsRootWindowHostDelegate()->OnHostKeyEvent(
+  EXPECT_FALSE(dispatcher->AsWindowTreeHostDelegate()->OnHostKeyEvent(
       &key_event3));
 #endif
   EXPECT_EQ(1, target.accelerator_pressed_count());