Revert of Remove a bunch of NPAPI quirks and related support code

content/browser/renderer_host/render_widget_host_view_aura.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_aura.h"
 
 #include <set>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 1057 matching lines @@
 }
 
 void RenderWidgetHostViewAura::DidStopFlinging() {
   selection_controller_client_->OnScrollCompleted();
 }
 
 #if defined(OS_WIN)
 void RenderWidgetHostViewAura::SetParentNativeViewAccessible(
     gfx::NativeViewAccessible accessible_parent) {
 }
+
+gfx::NativeViewId RenderWidgetHostViewAura::GetParentForWindowlessPlugin()
+    const {
+  if (legacy_render_widget_host_HWND_) {
+    return reinterpret_cast<gfx::NativeViewId>(
+        legacy_render_widget_host_HWND_->hwnd());
+  }
+  return NULL;
+}
 #endif
 
 bool RenderWidgetHostViewAura::HasAcceleratedSurface(
     const gfx::Size& desired_size) {
   // Aura doesn't use GetBackingStore for accelerated pages, so it doesn't
   // matter what is returned here as GetBackingStore is the only caller of this
   // method. TODO(jbates) implement this if other Aura code needs it.
   return false;
 }
 
@@ skipping 1482 matching lines @@
 void RenderWidgetHostViewAura::InternalSetBounds(const gfx::Rect& rect) {
   SnapToPhysicalPixelBoundary();
   // Don't recursively call SetBounds if this bounds update is the result of
   // a Window::SetBoundsInternal call.
   if (!in_bounds_changed_)
     window_->SetBounds(rect);
   host_->WasResized();
   delegated_frame_host_->WasResized();
 #if defined(OS_WIN)
   // Create the legacy dummy window which corresponds to the bounds of the
-  // webcontents. It is needed for accessibility and for scrolling to work in
-  // legacy drivers for trackpoints/trackpads, etc.
+  // webcontents. This will be passed as the container window for windowless
+  // plugins.
+  // Additonally the legacy dummy window is needed for accessibility and for
+  // scrolling to work in legacy drivers for trackpoints/trackpads, etc.
   if (!legacy_window_destroyed_ && GetNativeViewId()) {
     if (!legacy_render_widget_host_HWND_) {
       legacy_render_widget_host_HWND_ = LegacyRenderWidgetHostHWND::Create(
           reinterpret_cast<HWND>(GetNativeViewId()));
     }
     if (legacy_render_widget_host_HWND_) {
       legacy_render_widget_host_HWND_->set_host(this);
       legacy_render_widget_host_HWND_->SetBounds(
           window_->GetBoundsInRootWindow());
       // There are cases where the parent window is created, made visible and
@@ skipping 338 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewBase, public:
 
 // static
 void RenderWidgetHostViewBase::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content