Remove dwm function because it is going away in windows 8.1

content/browser/renderer_host/render_widget_host_view_win.cc

 // 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 "content/browser/renderer_host/render_widget_host_view_win.h"
 
-#include <dwmapi.h>
 #include <InputScope.h>
 #include <wtsapi32.h>
 #pragma comment(lib, "wtsapi32.lib")
 
 #include <algorithm>
 #include <map>
 #include <stack>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 307 matching lines @@
   screen_info.depth = dev_mode.dmBitsPerPel;
   screen_info.depthPerComponent = dev_mode.dmBitsPerPel / 3;  // Assumes RGB
   screen_info.deviceScaleFactor = ui::win::GetDeviceScaleFactor();
   screen_info.isMonochrome = dev_mode.dmColor == DMCOLOR_MONOCHROME;
   screen_info.rect = gfx::Rect(monitor_info.rcMonitor);
   screen_info.availableRect = gfx::Rect(monitor_info.rcWork);
 
   *results = screen_info;
 }
 
-void SetDwmPresentParameters(HWND window) {
-  if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
-    BOOL is_composited;
-    HRESULT result = DwmIsCompositionEnabled(&is_composited);
-    if (SUCCEEDED(result) && is_composited) {
-      DWM_PRESENT_PARAMETERS present_parameters = {0};
-      present_parameters.cbSize = sizeof(present_parameters);
-      present_parameters.cBuffer = 2;
-
-      result = DwmSetPresentParameters(window, &present_parameters);
-      if (FAILED(result))
-        DLOG(ERROR) << "Unable to set present parameters: 0x%08X", result;
-    }
-  }
-}
-
 }  // namespace
 
 const wchar_t kRenderWidgetHostHWNDClass[] = L"Chrome_RenderWidgetHostHWND";
 
 // Wrapper for maintaining touchstate associated with a WebTouchEvent.
 class WebTouchState {
  public:
   explicit WebTouchState(const RenderWidgetHostViewWin* window);
 
   // Updates the current touchpoint state with the supplied touches.
@@ skipping 876 matching lines @@
 LRESULT RenderWidgetHostViewWin::OnCreate(CREATESTRUCT* create_struct) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnCreate");
   // Call the WM_INPUTLANGCHANGE message handler to initialize the input locale
   // of a browser process.
   OnInputLangChange(0, 0);
   // Marks that window as supporting mouse-wheel messages rerouting so it is
   // scrolled when under the mouse pointer even if inactive.
   props_.push_back(ui::SetWindowSupportsRerouteMouseWheel(m_hWnd));
 
   WTSRegisterSessionNotification(m_hWnd, NOTIFY_FOR_THIS_SESSION);
-  SetDwmPresentParameters(m_hWnd);
 
   UpdateDesiredTouchMode();
   UpdateIMEState();
 
   return 0;
 }
 
 void RenderWidgetHostViewWin::OnActivate(UINT action, BOOL minimized,
                                          HWND window) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewWin::OnActivate");
@@ skipping 1317 matching lines @@
   GetClientRect(&currentRect);
 
   // Ensure window does not have zero area because D3D cannot create a zero
   // area swap chain.
   int width = std::max(1,
       static_cast<int>(currentRect.right - currentRect.left));
   int height = std::max(1,
       static_cast<int>(currentRect.bottom - currentRect.top));
 
   compositor_host_window_ = CreateWindowEx(
-    WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_RIGHTSCROLLBAR,
-    MAKEINTATOM(atom), 0,
-    WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_DISABLED,
-    0, 0, width, height, m_hWnd, 0, instance, 0);
+      WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_RIGHTSCROLLBAR,
+      MAKEINTATOM(atom), 0,
+      WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_DISABLED,
+      0, 0, width, height, m_hWnd, 0, instance, 0);
   ui::CheckWindowCreated(compositor_host_window_);
 
   ui::SetWindowUserData(compositor_host_window_, this);
 
-  SetDwmPresentParameters(compositor_host_window_);
-
   gfx::GLSurfaceHandle surface_handle(compositor_host_window_,
                                       gfx::NATIVE_TRANSPORT);
-
   return surface_handle;
 }
 
 void RenderWidgetHostViewWin::OnAcceleratedCompositingStateChange() {
   bool show = render_widget_host_->is_accelerated_compositing_active();
   // When we first create the compositor, we will get a show request from
   // the renderer before we have gotten the create request from the GPU. In this
   // case, simply ignore the show request.
   if (compositor_host_window_ == NULL)
     return;
@@ skipping 615 matching lines @@
   return new RenderWidgetHostViewWin(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(
       WebKit::WebScreenInfo* results) {
   GetScreenInfoForWindow(0, results);
 }
 
 }  // namespace content