Removes some dead code

ash/host/ash_window_tree_host_win.cc

Index: ash/host/ash_window_tree_host_win.cc
diff --git a/ash/host/ash_window_tree_host_win.cc b/ash/host/ash_window_tree_host_win.cc
deleted file mode 100644
index ff1e16312540df319ea513547b68dd1989aeef39..0000000000000000000000000000000000000000
--- a/ash/host/ash_window_tree_host_win.cc
+++ /dev/null
@@ -1,58 +0,0 @@
-// 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 "ash/host/ash_window_tree_host_win.h"
-
-#include "base/win/windows_version.h"
-
-namespace ash {
-
-AshWindowTreeHostWin::AshWindowTreeHostWin(const gfx::Rect& initial_bounds)
-    : AshWindowTreeHostPlatform(initial_bounds),
-      fullscreen_(false),
-      saved_window_style_(0),
-      saved_window_ex_style_(0) {}
-
-AshWindowTreeHostWin::~AshWindowTreeHostWin() {}
-
-void AshWindowTreeHostWin::ToggleFullScreen() {
-  gfx::Rect target_rect;
-  gfx::AcceleratedWidget hwnd = GetAcceleratedWidget();
-  if (!fullscreen_) {
-    fullscreen_ = true;
-    saved_window_style_ = GetWindowLong(hwnd, GWL_STYLE);
-    saved_window_ex_style_ = GetWindowLong(hwnd, GWL_EXSTYLE);
-    GetWindowRect(hwnd, &saved_window_rect_);
-    SetWindowLong(hwnd, GWL_STYLE,
-                  saved_window_style_ & ~(WS_CAPTION | WS_THICKFRAME));
-    SetWindowLong(hwnd, GWL_EXSTYLE,
-                  saved_window_ex_style_ &
-                      ~(WS_EX_DLGMODALFRAME | WS_EX_WINDOWEDGE |
-                        WS_EX_CLIENTEDGE | WS_EX_STATICEDGE));
-
-    MONITORINFO mi;
-    mi.cbSize = sizeof(mi);
-    GetMonitorInfo(MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST), &mi);
-    target_rect = gfx::Rect(mi.rcMonitor);
-  } else {
-    fullscreen_ = false;
-    SetWindowLong(hwnd, GWL_STYLE, saved_window_style_);
-    SetWindowLong(hwnd, GWL_EXSTYLE, saved_window_ex_style_);
-    target_rect = gfx::Rect(saved_window_rect_);
-  }
-  SetWindowPos(hwnd, NULL, target_rect.x(), target_rect.y(),
-               target_rect.width(), target_rect.height(),
-               SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
-}
-
-void AshWindowTreeHostWin::SetBoundsInPixels(const gfx::Rect& bounds) {
-  if (fullscreen_) {
-    saved_window_rect_.right = saved_window_rect_.left + bounds.width();
-    saved_window_rect_.bottom = saved_window_rect_.top + bounds.height();
-    return;
-  }
-  AshWindowTreeHostPlatform::SetBoundsInPixels(bounds);
-}
-
-}  // namespace ash