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

content/browser/browser_plugin/browser_plugin_guest.cc

Index: content/browser/browser_plugin/browser_plugin_guest.cc
===================================================================
--- content/browser/browser_plugin/browser_plugin_guest.cc	(revision 157800)
+++ content/browser/browser_plugin/browser_plugin_guest.cc	(working copy)
@@ -1,280 +0,0 @@
-// 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_guest.h"
-
-#include <algorithm>
-
-#include "content/browser/browser_plugin/browser_plugin_guest_helper.h"
-#include "content/browser/browser_plugin/browser_plugin_host_factory.h"
-#include "content/browser/renderer_host/render_view_host_impl.h"
-#include "content/browser/renderer_host/render_widget_host_impl.h"
-#include "content/browser/web_contents/web_contents_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_widget_host_view.h"
-#include "content/public/common/result_codes.h"
-#include "content/browser/browser_plugin/browser_plugin_host_factory.h"
-#include "ui/surface/transport_dib.h"
-
-namespace content {
-
-// static
-BrowserPluginHostFactory* BrowserPluginGuest::factory_ = NULL;
-
-namespace {
-const int kGuestHangTimeoutMs = 5000;
-}
-
-BrowserPluginGuest::BrowserPluginGuest(int instance_id,
-                                       WebContentsImpl* web_contents,
-                                       RenderViewHost* render_view_host)
-    : WebContentsObserver(web_contents),
-      embedder_render_process_host_(NULL),
-      instance_id_(instance_id),
-#if defined(OS_WIN)
-      damage_buffer_size_(0),
-#endif
-      pending_update_counter_(0),
-      guest_hang_timeout_(
-          base::TimeDelta::FromMilliseconds(kGuestHangTimeoutMs)) {
-  DCHECK(web_contents);
-  // |render_view_host| manages the ownership of this BrowserPluginGuestHelper.
-  new BrowserPluginGuestHelper(this, render_view_host);
-}
-
-BrowserPluginGuest::~BrowserPluginGuest() {
-}
-
-// static
-BrowserPluginGuest* BrowserPluginGuest::Create(
-    int instance_id,
-    WebContentsImpl* web_contents,
-    content::RenderViewHost* render_view_host) {
-  if (factory_) {
-    return factory_->CreateBrowserPluginGuest(instance_id,
-                                              web_contents,
-                                              render_view_host);
-  }
-  return new BrowserPluginGuest(instance_id, web_contents, render_view_host);
-}
-
-bool BrowserPluginGuest::ViewTakeFocus(bool reverse) {
-  SendMessageToEmbedder(
-      new BrowserPluginMsg_AdvanceFocus(instance_id(), reverse));
-  return true;
-}
-
-void BrowserPluginGuest::RendererUnresponsive(WebContents* source) {
-  base::ProcessHandle process_handle =
-      web_contents()->GetRenderProcessHost()->GetHandle();
-  base::KillProcess(process_handle, RESULT_CODE_HUNG, false);
-}
-
-void BrowserPluginGuest::SetDamageBuffer(
-    TransportDIB* damage_buffer,
-#if defined(OS_WIN)
-    int damage_buffer_size,
-#endif
-    const gfx::Size& damage_view_size,
-    float scale_factor) {
-  // Sanity check: Verify that we've correctly shared the damage buffer memory
-  // between the embedder and browser processes.
-  DCHECK(*static_cast<unsigned int*>(damage_buffer->memory()) == 0xdeadbeef);
-  damage_buffer_.reset(damage_buffer);
-#if defined(OS_WIN)
-  damage_buffer_size_ = damage_buffer_size;
-#endif
-  damage_view_size_ = damage_view_size;
-  damage_buffer_scale_factor_ = scale_factor;
-}
-
-void BrowserPluginGuest::UpdateRect(
-    RenderViewHost* render_view_host,
-    const ViewHostMsg_UpdateRect_Params& params) {
-  RenderWidgetHostImpl* render_widget_host =
-      RenderWidgetHostImpl::From(render_view_host);
-  render_widget_host->ResetSizeAndRepaintPendingFlags();
-  // This handler is only of interest to us for the 2D software rendering path.
-  // needs_ack should always be true for the 2D path.
-  // TODO(fsamuel): Do we need to do something different in the 3D case?
-  if (!params.needs_ack)
-    return;
-
-  // Only copy damage if the guest's view size is equal to the damage buffer's
-  // size and the guest's scale factor is equal to the damage buffer's scale
-  // factor.
-  // The scaling change can happen due to asynchronous updates of the DPI on a
-  // resolution change.
-  if (params.view_size.width() == damage_view_size().width() &&
-      params.view_size.height() == damage_view_size().height() &&
-      params.scale_factor == damage_buffer_scale_factor()) {
-    TransportDIB* dib = render_view_host->GetProcess()->
-        GetTransportDIB(params.bitmap);
-    if (dib) {
-#if defined(OS_WIN)
-      size_t guest_damage_buffer_size = params.bitmap_rect.width() *
-                                        params.bitmap_rect.height() * 4;
-      size_t embedder_damage_buffer_size = damage_buffer_size_;
-#else
-      size_t guest_damage_buffer_size = dib->size();
-      size_t embedder_damage_buffer_size = damage_buffer_->size();
-#endif
-      void* guest_memory = dib->memory();
-      void* embedder_memory = damage_buffer_->memory();
-      size_t size = std::min(guest_damage_buffer_size,
-                             embedder_damage_buffer_size);
-      memcpy(embedder_memory, guest_memory, size);
-    }
-  }
-  DCHECK(embedder_render_process_host());
-  BrowserPluginMsg_UpdateRect_Params relay_params;
-  relay_params.bitmap_rect = params.bitmap_rect;
-  relay_params.dx = params.dx;
-  relay_params.dy = params.dy;
-  relay_params.scroll_rect = params.scroll_rect;
-  relay_params.copy_rects = params.copy_rects;
-  relay_params.view_size = params.view_size;
-  relay_params.scale_factor = params.scale_factor;
-  relay_params.is_resize_ack = ViewHostMsg_UpdateRect_Flags::is_resize_ack(
-      params.flags);
-
-  // We need to send the ACK to the same render_view_host that issued
-  // the UpdateRect. We keep track of this correspondence via a message_id.
-  int message_id = pending_update_counter_++;
-  pending_updates_.AddWithID(render_view_host, message_id);
-
-  gfx::Size param_size = gfx::Size(params.view_size.width(),
-                                   params.view_size.height());
-
-  SendMessageToEmbedder(new BrowserPluginMsg_UpdateRect(instance_id(),
-                                                        message_id,
-                                                        relay_params));
-}
-
-void BrowserPluginGuest::UpdateRectACK(int message_id, const gfx::Size& size) {
-  RenderViewHost* render_view_host = pending_updates_.Lookup(message_id);
-  // If the guest has crashed since it sent the initial ViewHostMsg_UpdateRect
-  // then the pending_updates_ map will have been cleared.
-  if (!render_view_host)
-    return;
-  pending_updates_.Remove(message_id);
-  render_view_host->Send(
-      new ViewMsg_UpdateRect_ACK(render_view_host->GetRoutingID()));
-  if (!size.IsEmpty())
-    render_view_host->GetView()->SetSize(size);
-}
-
-void BrowserPluginGuest::HandleInputEvent(RenderViewHost* render_view_host,
-                                          const gfx::Rect& guest_rect,
-                                          const WebKit::WebInputEvent& event,
-                                          IPC::Message* reply_message) {
-  DCHECK(!pending_input_event_reply_.get());
-  guest_rect_ = guest_rect;
-  RenderViewHostImpl* guest_rvh = static_cast<RenderViewHostImpl*>(
-      web_contents()->GetRenderViewHost());
-  IPC::Message* message = new ViewMsg_HandleInputEvent(
-      guest_rvh->GetRoutingID());
-
-  // Copy the WebInputEvent and modify the event type. The guest expects
-  // WebInputEvent::RawKeyDowns and not KeyDowns.
-  scoped_array<char> input_buffer(new char[event.size]);
-  memcpy(input_buffer.get(), &event, event.size);
-  WebKit::WebInputEvent* input_event =
-      reinterpret_cast<WebKit::WebInputEvent*>(input_buffer.get());
-  if (event.type == WebKit::WebInputEvent::KeyDown)
-    input_event->type = WebKit::WebInputEvent::RawKeyDown;
-
-  message->WriteData(input_buffer.get(), event.size);
-  // TODO(fsamuel): What do we need to do here? This is for keyboard shortcuts.
-  if (input_event->type == WebKit::WebInputEvent::RawKeyDown)
-    message->WriteBool(false);
-  bool sent = guest_rvh->Send(message);
-  if (!sent) {
-    // If the embedder is waiting for a previous input ack, a new input message
-    // won't get sent to the guest. Reply immediately with handled = false so
-    // embedder doesn't hang.
-    BrowserPluginHostMsg_HandleInputEvent::WriteReplyParams(
-        reply_message, false /* handled */, cursor_);
-    embedder_render_process_host()->Send(reply_message);
-    return;
-  }
-
-  pending_input_event_reply_.reset(reply_message);
-  // Input events are handled synchronously, meaning it blocks the embedder. We
-  // set a hang monitor here that will kill the guest process (5s timeout) if we
-  // don't receive an ack. This will kill all the guests that are running in the
-  // same process (undesired behavior).
-  // TODO(fsamuel,lazyboy): Find a way to get rid of guest process kill
-  // behavior. http://crbug.com/147272.
-  guest_rvh->StartHangMonitorTimeout(guest_hang_timeout_);
-}
-
-void BrowserPluginGuest::HandleInputEventAck(RenderViewHost* render_view_host,
-                                             bool handled) {
-  RenderViewHostImpl* guest_rvh =
-      static_cast<RenderViewHostImpl*>(render_view_host);
-  guest_rvh->StopHangMonitorTimeout();
-  DCHECK(pending_input_event_reply_.get());
-  IPC::Message* reply_message = pending_input_event_reply_.release();
-  BrowserPluginHostMsg_HandleInputEvent::WriteReplyParams(reply_message,
-                                                          handled,
-                                                          cursor_);
-  SendMessageToEmbedder(reply_message);
-}
-
-void BrowserPluginGuest::SetFocus(bool focused) {
-  RenderViewHost* render_view_host = web_contents()->GetRenderViewHost();
-  render_view_host->Send(
-      new ViewMsg_SetFocus(render_view_host->GetRoutingID(), focused));
-}
-
-void BrowserPluginGuest::ShowWidget(RenderViewHost* render_view_host,
-                                    int route_id,
-                                    const gfx::Rect& initial_pos) {
-  gfx::Rect screen_pos(initial_pos);
-  screen_pos.Offset(guest_rect_.origin());
-  static_cast<WebContentsImpl*>(web_contents())->ShowCreatedWidget(route_id,
-                                                                   screen_pos);
-}
-
-void BrowserPluginGuest::SetCursor(const WebCursor& cursor) {
-  cursor_ = cursor;
-}
-
-void BrowserPluginGuest::DidCommitProvisionalLoadForFrame(
-    int64 frame_id,
-    bool is_main_frame,
-    const GURL& url,
-    PageTransition transition_type,
-    RenderViewHost* render_view_host) {
-  // Inform its embedder of the updated URL.
-  DCHECK(embedder_render_process_host());
-  if (is_main_frame)
-    SendMessageToEmbedder(new BrowserPluginMsg_DidNavigate(instance_id(), url));
-}
-
-void BrowserPluginGuest::RenderViewGone(base::TerminationStatus status) {
-  DCHECK(embedder_render_process_host());
-  if (pending_input_event_reply_.get()) {
-    IPC::Message* reply_message = pending_input_event_reply_.release();
-    BrowserPluginHostMsg_HandleInputEvent::WriteReplyParams(reply_message,
-                                                            false,
-                                                            cursor_);
-    SendMessageToEmbedder(reply_message);
-  }
-  SendMessageToEmbedder(new BrowserPluginMsg_GuestCrashed(instance_id()));
-  IDMap<RenderViewHost>::const_iterator iter(&pending_updates_);
-  while (!iter.IsAtEnd()) {
-    pending_updates_.Remove(iter.GetCurrentKey());
-    iter.Advance();
-  }
-}
-
-void BrowserPluginGuest::SendMessageToEmbedder(IPC::Message* msg) {
-  embedder_render_process_host()->Send(msg);
-}
-
-}  // namespace content