Clean up a few TODO items.

content/browser/renderer_host/render_widget_host_view_base.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_base.h"
 
 #include "base/logging.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebScreenInfo.h"
@@ skipping 32 matching lines @@
 }
 
 void RenderWidgetHostViewBase::SetBackground(const SkBitmap& background) {
   background_ = background;
 }
 
 const SkBitmap& RenderWidgetHostViewBase::GetBackground() {
   return background_;
 }
 
-BrowserAccessibilityManager*
-    RenderWidgetHostViewBase::GetBrowserAccessibilityManager() const {
-  return browser_accessibility_manager_.get();
-}
-
 void RenderWidgetHostViewBase::SelectionChanged(const string16& text,
                                                 size_t offset,
                                                 const ui::Range& range) {
   selection_text_ = text;
   selection_text_offset_ = offset;
   selection_range_.set_start(range.start());
   selection_range_.set_end(range.end());
 }
 
 bool RenderWidgetHostViewBase::IsShowingContextMenu() const {
   return showing_context_menu_;
 }
 
 void RenderWidgetHostViewBase::SetShowingContextMenu(bool showing) {
   DCHECK_NE(showing_context_menu_, showing);
   showing_context_menu_ = showing;
 }
 
 bool RenderWidgetHostViewBase::IsMouseLocked() {
   return mouse_locked_;
 }
 
+void RenderWidgetHostViewBase::UnhandledWheelEvent(
+    const WebKit::WebMouseWheelEvent& event) {
+  // Most implementations don't need to do anything here.
+}
+
 void RenderWidgetHostViewBase::SetPopupType(WebKit::WebPopupType popup_type) {
   popup_type_ = popup_type;
 }
 
 WebKit::WebPopupType RenderWidgetHostViewBase::GetPopupType() {
   return popup_type_;
 }
 
+BrowserAccessibilityManager*
+    RenderWidgetHostViewBase::GetBrowserAccessibilityManager() const {
+  return browser_accessibility_manager_.get();
+}
+
 void RenderWidgetHostViewBase::SetBrowserAccessibilityManager(
     BrowserAccessibilityManager* manager) {
   browser_accessibility_manager_.reset(manager);
 }
 
 }  // namespace content