Revert 157773 - This is followup from Charlie's comments on Fady's cl: http://chromiumcodereview.ap…

content/browser/browser_plugin/browser_plugin_embedder_helper.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/browser_plugin/browser_plugin_embedder_helper.h"
-
-#include "content/browser/browser_plugin/browser_plugin_embedder.h"
-#include "content/browser/renderer_host/render_view_host_impl.h"
-#include "content/common/browser_plugin_messages.h"
-#include "content/common/view_messages.h"
-#include "content/public/browser/render_process_host.h"
-#include "content/public/browser/render_view_host.h"
-#include "content/public/browser/render_widget_host_view.h"
-#include "ui/gfx/size.h"
-
-namespace content {
-
-BrowserPluginEmbedderHelper::BrowserPluginEmbedderHelper(
-    BrowserPluginEmbedder* embedder,
-    RenderViewHost* render_view_host)
-    : RenderViewHostObserver(render_view_host),
-      embedder_(embedder) {
-}
-
-BrowserPluginEmbedderHelper::~BrowserPluginEmbedderHelper() {
-}
-
-bool BrowserPluginEmbedderHelper::Send(IPC::Message* message) {
-  return RenderViewHostObserver::Send(message);
-}
-
-bool BrowserPluginEmbedderHelper::OnMessageReceived(
-    const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(BrowserPluginEmbedderHelper, message)
-    IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_NavigateGuest,
-                        OnNavigateGuest);
-    IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_ResizeGuest, OnResizeGuest)
-    IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_UpdateRect_ACK, OnUpdateRectACK);
-    IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_SetFocus, OnSetFocus);
-    IPC_MESSAGE_HANDLER_GENERIC(BrowserPluginHostMsg_HandleInputEvent,
-        OnHandleInputEvent(*static_cast<const IPC::SyncMessage*>(&message),
-                           &handled))
-    IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_PluginDestroyed,
-                        OnPluginDestroyed);
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void BrowserPluginEmbedderHelper::OnResizeGuest(
-    int instance_id,
-    const BrowserPluginHostMsg_ResizeGuest_Params& params) {
-  TransportDIB* damage_buffer = NULL;
-#if defined(OS_WIN)
-  // On Windows we need to duplicate the handle from the remote process.
-  HANDLE section;
-  DuplicateHandle(render_view_host()->GetProcess()->GetHandle(),
-                  params.damage_buffer_id.handle,
-                  GetCurrentProcess(),
-                  &section,
-                  STANDARD_RIGHTS_REQUIRED | FILE_MAP_READ | FILE_MAP_WRITE,
-                  FALSE, 0);
-  damage_buffer = TransportDIB::Map(section);
-#elif defined(OS_MACOSX)
-  // On OSX, the browser allocates all DIBs and keeps a file descriptor around
-  // for each.
-  damage_buffer = render_view_host()->GetProcess()->
-      GetTransportDIB(params.damage_buffer_id);
-#elif defined(OS_ANDROID)
-  damage_buffer = TransportDIB::Map(params.damage_buffer_id);
-#elif defined(OS_POSIX)
-  damage_buffer = TransportDIB::Map(params.damage_buffer_id.shmkey);
-#endif  // defined(OS_POSIX)
-  DCHECK(damage_buffer);
-  // TODO(fsamuel): Schedule this later so that we don't stall the embedder for
-  // too long.
-  embedder_->ResizeGuest(instance_id,
-                         damage_buffer,
-#if defined(OS_WIN)
-                         params.damage_buffer_size,
-#endif
-                         params.width,
-                         params.height,
-                         params.resize_pending,
-                         params.scale_factor);
-}
-
-void BrowserPluginEmbedderHelper::OnHandleInputEvent(
-    const IPC::SyncMessage& message,
-    bool* handled) {
-  *handled = true;
-  PickleIterator iter(message);
-
-  // TODO(fsamuel): This appears to be a monotonically increasing value.
-  int instance_id = -1;
-  const char* guest_rect_data = NULL;
-  int guest_rect_data_length = -1;
-  const char* input_event_data = NULL;
-  int input_event_data_length = -1;
-  if (!iter.SkipBytes(4) ||
-      !message.ReadInt(&iter, &instance_id) ||
-      !message.ReadData(&iter, &guest_rect_data, &guest_rect_data_length) ||
-      !message.ReadData(&iter, &input_event_data, &input_event_data_length)) {
-    *handled = false;
-    return;
-  }
-  const gfx::Rect* guest_rect =
-      reinterpret_cast<const gfx::Rect*>(guest_rect_data);
-  const WebKit::WebInputEvent* input_event =
-      reinterpret_cast<const WebKit::WebInputEvent*>(input_event_data);
-  RenderViewHostImpl* rvh = static_cast<RenderViewHostImpl*>(
-      render_view_host());
-
-  // Convert the window coordinates into screen coordinates.
-  gfx::Rect guest_screen_rect(*guest_rect);
-  if (rvh->GetView())
-    guest_screen_rect.Offset(rvh->GetView()->GetViewBounds().origin());
-
-  IPC::Message* reply_message =
-      IPC::SyncMessage::GenerateReply(&message);
-  embedder_->HandleInputEvent(instance_id,
-                              rvh,
-                              guest_screen_rect,
-                              *input_event,
-                              reply_message);
-}
-
-void BrowserPluginEmbedderHelper::OnNavigateGuest(int instance_id,
-                                                  int64 frame_id,
-                                                  const std::string& src,
-                                                  const gfx::Size& size) {
-  embedder_->NavigateGuest(render_view_host(), instance_id, frame_id, src,
-                           size);
-}
-
-void BrowserPluginEmbedderHelper::OnUpdateRectACK(int instance_id,
-                                                  int message_id,
-                                                  const gfx::Size& size) {
-  embedder_->UpdateRectACK(instance_id, message_id, size);
-}
-
-void BrowserPluginEmbedderHelper::OnSetFocus(int instance_id, bool focused) {
-  embedder_->SetFocus(instance_id, focused);
-}
-
-void BrowserPluginEmbedderHelper::OnPluginDestroyed(int instance_id) {
-  embedder_->PluginDestroyed(instance_id);
-}
-
-}  // namespace content