Remove OnThemeChanged and associated unused message

content/renderer/render_view_impl.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/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 164 matching lines @@
 #if defined(OS_ANDROID)
 #include <cpu-features.h>
 
 #include "content/renderer/android/address_detector.h"
 #include "content/renderer/android/content_detector.h"
 #include "content/renderer/android/disambiguation_popup_helper.h"
 #include "content/renderer/android/email_detector.h"
 #include "content/renderer/android/phone_number_detector.h"
 #include "ui/gfx/geometry/rect_f.h"
 
-#elif defined(OS_WIN)
-// TODO(port): these files are currently Windows only because they concern:
-//   * theming
-#include "ui/native_theme/native_theme_win.h"
-#elif defined(USE_X11)
-#include "ui/native_theme/native_theme.h"
 #elif defined(OS_MACOSX)
 #include "skia/ext/skia_utils_mac.h"
 #endif
 
 #if defined(ENABLE_PLUGINS)
 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
 #include "content/renderer/pepper/pepper_plugin_registry.h"
 #endif
 
 #if defined(ENABLE_WEBRTC)
@@ skipping 1123 matching lines @@
     IPC_MESSAGE_HANDLER(DragMsg_SourceEnded, OnDragSourceEnded)
     IPC_MESSAGE_HANDLER(DragMsg_SourceSystemDragEnded,
                         OnDragSourceSystemDragEnded)
     IPC_MESSAGE_HANDLER(ViewMsg_AllowBindings, OnAllowBindings)
     IPC_MESSAGE_HANDLER(ViewMsg_SetInitialFocus, OnSetInitialFocus)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateTargetURL_ACK, OnUpdateTargetURLAck)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateWebPreferences, OnUpdateWebPreferences)
     IPC_MESSAGE_HANDLER(ViewMsg_EnumerateDirectoryResponse,
                         OnEnumerateDirectoryResponse)
     IPC_MESSAGE_HANDLER(ViewMsg_ClosePage, OnClosePage)
-    IPC_MESSAGE_HANDLER(ViewMsg_ThemeChanged, OnThemeChanged)
     IPC_MESSAGE_HANDLER(ViewMsg_MoveOrResizeStarted, OnMoveOrResizeStarted)
     IPC_MESSAGE_HANDLER(ViewMsg_ClearFocusedElement, OnClearFocusedElement)
     IPC_MESSAGE_HANDLER(ViewMsg_SetBackgroundOpaque, OnSetBackgroundOpaque)
     IPC_MESSAGE_HANDLER(ViewMsg_EnablePreferredSizeChangedMode,
                         OnEnablePreferredSizeChangedMode)
     IPC_MESSAGE_HANDLER(ViewMsg_EnableAutoResize, OnEnableAutoResize)
     IPC_MESSAGE_HANDLER(ViewMsg_DisableAutoResize, OnDisableAutoResize)
     IPC_MESSAGE_HANDLER(ViewMsg_DisableScrollbarsForSmallWindows,
                         OnDisableScrollbarsForSmallWindows)
     IPC_MESSAGE_HANDLER(ViewMsg_SetRendererPrefs, OnSetRendererPrefs)
@@ skipping 1163 matching lines @@
 
   Send(new ViewHostMsg_ClosePage_ACK(GetRoutingID()));
 }
 
 void RenderViewImpl::OnClose() {
   if (closing_)
     RenderThread::Get()->Send(new ViewHostMsg_Close_ACK(GetRoutingID()));
   RenderWidget::OnClose();
 }
 
-void RenderViewImpl::OnThemeChanged() {
-#if defined(USE_AURA)
-  // Aura doesn't care if we switch themes.
-#elif defined(OS_WIN)
-  ui::NativeThemeWin::instance()->CloseHandles();
-  if (webview())
-    webview()->themeChanged();
-#else  // defined(OS_WIN)
-  // TODO(port): we don't support theming on non-Windows platforms yet
-  NOTIMPLEMENTED();
-#endif
-}
-
 void RenderViewImpl::OnMoveOrResizeStarted() {
   if (webview())
     webview()->hidePopups();
 }
 
 void RenderViewImpl::ResizeWebWidget() {
     webview()->resizeWithTopControls(GetSizeForWebWidget(),
                                      top_controls_height_,
                                      top_controls_shrink_blink_size_);
 }
@@ skipping 539 matching lines @@
         return render_frame->focused_pepper_plugin();
     }
     frame = frame->traverseNext(false);
   }
 
   return nullptr;
 }
 #endif
 
 }  // namespace content