Rename RootWindowHost to WindowTreeHost

ui/views/widget/native_widget_aura_unittest.cc

Index: ui/views/widget/native_widget_aura_unittest.cc
diff --git a/ui/views/widget/native_widget_aura_unittest.cc b/ui/views/widget/native_widget_aura_unittest.cc
index 29166d856d9751c1efebb110eaa2f89353c0692a..a32be2f6cda1fc477b101a77c0cbaf6b1b052a67 100644
--- a/ui/views/widget/native_widget_aura_unittest.cc
+++ b/ui/views/widget/native_widget_aura_unittest.cc
@@ -250,7 +250,7 @@ TEST_F(NativeWidgetAuraTest, DontCaptureOnGesture) {
 
   ui::TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(41, 51), 1,
                            base::TimeDelta());
-  dispatcher()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
+  dispatcher()->AsWindowTreeHostDelegate()->OnHostTouchEvent(&press);
   // Both views should get the press.
   EXPECT_TRUE(view->got_gesture_event());
   EXPECT_TRUE(child->got_gesture_event());
@@ -263,7 +263,7 @@ TEST_F(NativeWidgetAuraTest, DontCaptureOnGesture) {
   // the press.
   ui::TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(250, 251), 1,
                              base::TimeDelta());
-  dispatcher()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
+  dispatcher()->AsWindowTreeHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_TRUE(view->got_gesture_event());
   EXPECT_FALSE(child->got_gesture_event());
   view->clear_got_gesture_event();
@@ -286,7 +286,7 @@ TEST_F(NativeWidgetAuraTest, ReleaseCaptureOnTouchRelease) {
 
   ui::TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(41, 51), 1,
                            base::TimeDelta());
-  dispatcher()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
+  dispatcher()->AsWindowTreeHostDelegate()->OnHostTouchEvent(&press);
   EXPECT_TRUE(view->got_gesture_event());
   view->clear_got_gesture_event();
   // Set the capture.
@@ -296,7 +296,7 @@ TEST_F(NativeWidgetAuraTest, ReleaseCaptureOnTouchRelease) {
   // Generate a release, this should trigger releasing capture.
   ui::TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(41, 51), 1,
                              base::TimeDelta());
-  dispatcher()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
+  dispatcher()->AsWindowTreeHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_TRUE(view->got_gesture_event());
   view->clear_got_gesture_event();
   EXPECT_FALSE(widget->HasCapture());