Remove windowed NPAPI code

content/browser/renderer_host/render_widget_host_view_mac.mm

 // 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_mac.h"
 
 #import <objc/runtime.h>
 #include <OpenGL/gl.h>
 #include <QuartzCore/QuartzCore.h>
 #include <stdint.h>
@@ skipping 949 matching lines @@
 }
 
 gfx::NativeViewId RenderWidgetHostViewMac::GetNativeViewId() const {
   return reinterpret_cast<gfx::NativeViewId>(GetNativeView());
 }
 
 gfx::NativeViewAccessible RenderWidgetHostViewMac::GetNativeViewAccessible() {
   return cocoa_view_;
 }
 
-void RenderWidgetHostViewMac::MovePluginWindows(
-    const std::vector<WebPluginGeometry>& moves) {
-  // Must be overridden, but unused on this platform. Core Animation
-  // plugins are drawn by the GPU process (through the compositor),
-  // and Core Graphics plugins are drawn by the renderer process.
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-}
-
 void RenderWidgetHostViewMac::Focus() {
   [[cocoa_view_ window] makeFirstResponder:cocoa_view_];
 }
 
 bool RenderWidgetHostViewMac::HasFocus() const {
   return [[cocoa_view_ window] firstResponder] == cocoa_view_;
 }
 
 bool RenderWidgetHostViewMac::IsSurfaceAvailableForCopy() const {
   DCHECK(delegated_frame_host_);
@@ skipping 2496 matching lines @@
 
 // "-webkit-app-region: drag | no-drag" is implemented on Mac by excluding
 // regions that are not draggable. (See ControlRegionView in
 // native_app_window_cocoa.mm). This requires the render host view to be
 // draggable by default.
 - (BOOL)mouseDownCanMoveWindow {
   return YES;
 }
 
 @end