Continue deleting code in ui/.

ui/base/win/hwnd_subclass.cc

Index: ui/base/win/hwnd_subclass.cc
diff --git a/ui/base/win/hwnd_subclass.cc b/ui/base/win/hwnd_subclass.cc
deleted file mode 100644
index 8628a7c2e8ba0cbff3fcb029f5ed3479a9ed9057..0000000000000000000000000000000000000000
--- a/ui/base/win/hwnd_subclass.cc
+++ /dev/null
@@ -1,170 +0,0 @@
-// 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 "ui/base/win/hwnd_subclass.h"
-
-#include <algorithm>
-
-#include "base/logging.h"
-#include "base/memory/scoped_vector.h"
-#include "base/memory/singleton.h"
-#include "ui/gfx/win/dpi.h"
-#include "ui/gfx/win/hwnd_util.h"
-
-namespace {
-const char kHWNDSubclassKey[] = "__UI_BASE_WIN_HWND_SUBCLASS_PROC__";
-
-LRESULT CALLBACK WndProc(HWND hwnd,
-                         UINT message,
-                         WPARAM w_param,
-                         LPARAM l_param) {
-  ui::HWNDSubclass* wrapped_wnd_proc =
-      reinterpret_cast<ui::HWNDSubclass*>(
-          ui::ViewProp::GetValue(hwnd, kHWNDSubclassKey));
-  return wrapped_wnd_proc ? wrapped_wnd_proc->OnWndProc(hwnd,
-                                                        message,
-                                                        w_param,
-                                                        l_param)
-                          : DefWindowProc(hwnd, message, w_param, l_param);
-}
-
-WNDPROC GetCurrentWndProc(HWND target) {
-  return reinterpret_cast<WNDPROC>(GetWindowLongPtr(target, GWLP_WNDPROC));
-}
-
-// Not defined before Win7
-BOOL GetTouchInputInfoWrapper(HTOUCHINPUT handle, UINT count,
-                              PTOUCHINPUT pointer, int size) {
-  typedef BOOL(WINAPI *GetTouchInputInfoPtr)(HTOUCHINPUT, UINT,
-                                             PTOUCHINPUT, int);
-  GetTouchInputInfoPtr get_touch_input_info_func =
-      reinterpret_cast<GetTouchInputInfoPtr>(
-          GetProcAddress(GetModuleHandleA("user32.dll"), "GetTouchInputInfo"));
-  if (get_touch_input_info_func)
-    return get_touch_input_info_func(handle, count, pointer, size);
-  return FALSE;
-}
-
-}  // namespace
-
-namespace ui {
-
-// Singleton factory that creates and manages the lifetime of all
-// ui::HWNDSubclass objects.
-class HWNDSubclass::HWNDSubclassFactory {
- public:
-  static HWNDSubclassFactory* GetInstance() {
-    return Singleton<HWNDSubclassFactory,
-        LeakySingletonTraits<HWNDSubclassFactory> >::get();
-  }
-
-  // Returns a non-null HWNDSubclass corresponding to the HWND |target|. Creates
-  // one if none exists. Retains ownership of the returned pointer.
-  HWNDSubclass* GetHwndSubclassForTarget(HWND target) {
-    DCHECK(target);
-    HWNDSubclass* subclass = reinterpret_cast<HWNDSubclass*>(
-        ui::ViewProp::GetValue(target, kHWNDSubclassKey));
-    if (!subclass) {
-      subclass = new ui::HWNDSubclass(target);
-      hwnd_subclasses_.push_back(subclass);
-    }
-    return subclass;
-  }
-
-  const ScopedVector<HWNDSubclass>& hwnd_subclasses() {
-    return hwnd_subclasses_;
-  }
-
- private:
-  friend struct DefaultSingletonTraits<HWNDSubclassFactory>;
-
-  HWNDSubclassFactory() {}
-
-  ScopedVector<HWNDSubclass> hwnd_subclasses_;
-
-  DISALLOW_COPY_AND_ASSIGN(HWNDSubclassFactory);
-};
-
-// static
-void HWNDSubclass::AddFilterToTarget(HWND target, HWNDMessageFilter* filter) {
-  HWNDSubclassFactory::GetInstance()->GetHwndSubclassForTarget(
-      target)->AddFilter(filter);
-}
-
-// static
-void HWNDSubclass::RemoveFilterFromAllTargets(HWNDMessageFilter* filter) {
-  HWNDSubclassFactory* factory = HWNDSubclassFactory::GetInstance();
-  ScopedVector<ui::HWNDSubclass>::const_iterator it;
-  for (it = factory->hwnd_subclasses().begin();
-      it != factory->hwnd_subclasses().end(); ++it)
-    (*it)->RemoveFilter(filter);
-}
-
-// static
-HWNDSubclass* HWNDSubclass::GetHwndSubclassForTarget(HWND target) {
-  return HWNDSubclassFactory::GetInstance()->GetHwndSubclassForTarget(target);
-}
-
-void HWNDSubclass::AddFilter(HWNDMessageFilter* filter) {
-  DCHECK(filter);
-  if (std::find(filters_.begin(), filters_.end(), filter) == filters_.end())
-    filters_.push_back(filter);
-}
-
-void HWNDSubclass::RemoveFilter(HWNDMessageFilter* filter) {
-  std::vector<HWNDMessageFilter*>::iterator it =
-      std::find(filters_.begin(), filters_.end(), filter);
-  if (it != filters_.end())
-    filters_.erase(it);
-}
-
-HWNDSubclass::HWNDSubclass(HWND target)
-    : target_(target),
-      original_wnd_proc_(GetCurrentWndProc(target)),
-      prop_(target, kHWNDSubclassKey, this) {
-  gfx::SetWindowProc(target_, &WndProc);
-}
-
-HWNDSubclass::~HWNDSubclass() {
-}
-
-LRESULT HWNDSubclass::OnWndProc(HWND hwnd,
-                                UINT message,
-                                WPARAM w_param,
-                                LPARAM l_param) {
-
-  // Touch messages are always passed in screen coordinates. If the OS is
-  // scaled, but the app is not DPI aware, then then WM_TOUCH might be
-  // intended for a different window.
-  if (message == WM_TOUCH) {
-    TOUCHINPUT point;
-
-    if (GetTouchInputInfoWrapper(reinterpret_cast<HTOUCHINPUT>(l_param), 1,
-                                 &point, sizeof(TOUCHINPUT))) {
-      POINT touch_location = {TOUCH_COORD_TO_PIXEL(point.x),
-                              TOUCH_COORD_TO_PIXEL(point.y)};
-      HWND actual_target = WindowFromPoint(touch_location);
-      if (actual_target != hwnd) {
-        return SendMessage(actual_target, message, w_param, l_param);
-      }
-    }
-  }
-
-  for (std::vector<HWNDMessageFilter*>::iterator it = filters_.begin();
-      it != filters_.end(); ++it) {
-    LRESULT l_result = 0;
-    if ((*it)->FilterMessage(hwnd, message, w_param, l_param, &l_result))
-      return l_result;
-  }
-
-  // In most cases, |original_wnd_proc_| will take care of calling
-  // DefWindowProc.
-  return CallWindowProc(original_wnd_proc_, hwnd, message, w_param, l_param);
-}
-
-HWNDMessageFilter::~HWNDMessageFilter() {
-  HWNDSubclass::RemoveFilterFromAllTargets(this);
-}
-
-}  // namespace ui