Deleted code associated with --enable-gpu-rendering and...

chrome/browser/renderer_host/backing_store_proxy.cc

-// Copyright (c) 2010 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 "chrome/browser/renderer_host/backing_store_proxy.h"
-
-#include "build/build_config.h"
-#include "chrome/browser/gpu_process_host_ui_shim.h"
-#include "chrome/browser/renderer_host/render_process_host.h"
-#include "chrome/browser/renderer_host/render_widget_host.h"
-#include "chrome/common/gpu_messages.h"
-#include "chrome/common/render_messages.h"
-#include "gfx/rect.h"
-
-#if defined(OS_WIN)
-#include <windows.h>
-#endif
-
-BackingStoreProxy::BackingStoreProxy(RenderWidgetHost* widget,
-                                     const gfx::Size& size,
-                                     GpuProcessHostUIShim* process_shim,
-                                     int32 routing_id)
-    : BackingStore(widget, size),
-      process_shim_(process_shim),
-      routing_id_(routing_id),
-      waiting_for_paint_ack_(false) {
-  process_shim_->AddRoute(routing_id_, this);
-}
-
-BackingStoreProxy::~BackingStoreProxy() {
-  process_shim_->RemoveRoute(routing_id_);
-}
-
-void BackingStoreProxy::PaintToBackingStore(
-    RenderProcessHost* process,
-    TransportDIB::Id bitmap,
-    const gfx::Rect& bitmap_rect,
-    const std::vector<gfx::Rect>& copy_rects,
-    bool* painted_synchronously) {
-  DCHECK(!waiting_for_paint_ack_);
-
-  base::ProcessId process_id;
-#if defined(OS_WIN)
-  process_id = ::GetProcessId(process->GetHandle());
-#elif defined(OS_POSIX)
-  process_id = process->GetHandle();
-#endif
-
-  if (process_shim_->Send(new GpuMsg_PaintToBackingStore(
-          routing_id_, process_id, bitmap, bitmap_rect, copy_rects))) {
-    // Message sent successfully, so the caller can not destroy the
-    // TransportDIB. OnDonePaintingToBackingStore will free it later.
-    *painted_synchronously = false;
-    waiting_for_paint_ack_ = true;
-  } else {
-    // On error, we're done with the TransportDIB and the caller can free it.
-    *painted_synchronously = true;
-  }
-}
-
-bool BackingStoreProxy::CopyFromBackingStore(const gfx::Rect& rect,
-                                             skia::PlatformCanvas* output) {
-  NOTIMPLEMENTED();
-  return false;
-}
-
-void BackingStoreProxy::ScrollBackingStore(int dx, int dy,
-                                           const gfx::Rect& clip_rect,
-                                           const gfx::Size& view_size) {
-  process_shim_->Send(new GpuMsg_ScrollBackingStore(routing_id_, dx, dy,
-                                                    clip_rect, view_size));
-}
-
-void BackingStoreProxy::OnMessageReceived(const IPC::Message& msg) {
-  IPC_BEGIN_MESSAGE_MAP(BackingStoreProxy, msg)
-    IPC_MESSAGE_HANDLER(GpuHostMsg_PaintToBackingStore_ACK,
-                        OnPaintToBackingStoreACK)
-  IPC_END_MESSAGE_MAP_EX()
-}
-
-void BackingStoreProxy::OnChannelConnected(int32 peer_pid) {
-}
-
-void BackingStoreProxy::OnChannelError() {
-  if (waiting_for_paint_ack_) {
-    // If the GPU process dies while painting, the renderer will be waiting for
-    // the paint ACK before painting any more. Since no ack is coming, we
-    // manually declare that we're done with the transport DIB here so it can
-    // continue.
-    OnPaintToBackingStoreACK();
-  }
-
-  // TODO(brettw): does this mean we aren't getting any more messages and we
-  // should delete outselves?
-}
-
-void BackingStoreProxy::OnPaintToBackingStoreACK() {
-  DCHECK(waiting_for_paint_ack_);
-  render_widget_host()->DonePaintingToBackingStore();
-  waiting_for_paint_ack_ = false;
-}