Move core pieces of browser\renderer_host to src\content.

chrome/browser/renderer_host/render_widget_helper.cc

Index: chrome/browser/renderer_host/render_widget_helper.cc
===================================================================
--- chrome/browser/renderer_host/render_widget_helper.cc	(revision 75488)
+++ chrome/browser/renderer_host/render_widget_helper.cc	(working copy)
@@ -1,335 +0,0 @@
-// 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/render_widget_helper.h"
-
-#include "base/eintr_wrapper.h"
-#include "base/threading/thread.h"
-#include "chrome/browser/browser_thread.h"
-#include "chrome/browser/renderer_host/render_process_host.h"
-#include "chrome/browser/renderer_host/render_view_host.h"
-#include "chrome/browser/renderer_host/resource_dispatcher_host.h"
-#include "chrome/common/render_messages_params.h"
-
-// A Task used with InvokeLater that we hold a pointer to in pending_paints_.
-// Instances are deleted by MessageLoop after it calls their Run method.
-class RenderWidgetHelper::UpdateMsgProxy : public Task {
- public:
-  UpdateMsgProxy(RenderWidgetHelper* h, const IPC::Message& m)
-      : helper(h),
-        message(m),
-        cancelled(false) {
-  }
-
-  ~UpdateMsgProxy() {
-    // If the paint message was never dispatched, then we need to let the
-    // helper know that we are going away.
-    if (!cancelled && helper)
-      helper->OnDiscardUpdateMsg(this);
-  }
-
-  virtual void Run() {
-    if (!cancelled) {
-      helper->OnDispatchUpdateMsg(this);
-      helper = NULL;
-    }
-  }
-
-  scoped_refptr<RenderWidgetHelper> helper;
-  IPC::Message message;
-  bool cancelled;  // If true, then the message will not be dispatched.
-
-  DISALLOW_COPY_AND_ASSIGN(UpdateMsgProxy);
-};
-
-RenderWidgetHelper::RenderWidgetHelper()
-    : render_process_id_(-1),
-#if defined(OS_WIN)
-      event_(CreateEvent(NULL, FALSE /* auto-reset */, FALSE, NULL)),
-#elif defined(OS_POSIX)
-      event_(false /* auto-reset */, false),
-#endif
-      resource_dispatcher_host_(NULL) {
-}
-
-RenderWidgetHelper::~RenderWidgetHelper() {
-  // The elements of pending_paints_ each hold an owning reference back to this
-  // object, so we should not be destroyed unless pending_paints_ is empty!
-  DCHECK(pending_paints_.empty());
-
-#if defined(OS_MACOSX)
-  ClearAllocatedDIBs();
-#endif
-}
-
-void RenderWidgetHelper::Init(
-    int render_process_id,
-    ResourceDispatcherHost* resource_dispatcher_host) {
-  render_process_id_ = render_process_id;
-  resource_dispatcher_host_ = resource_dispatcher_host;
-}
-
-int RenderWidgetHelper::GetNextRoutingID() {
-  return next_routing_id_.GetNext() + 1;
-}
-
-void RenderWidgetHelper::CancelResourceRequests(int render_widget_id) {
-  if (render_process_id_ == -1)
-    return;
-
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      NewRunnableMethod(this,
-                        &RenderWidgetHelper::OnCancelResourceRequests,
-                        render_widget_id));
-}
-
-void RenderWidgetHelper::CrossSiteClosePageACK(
-    const ViewMsg_ClosePage_Params& params) {
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      NewRunnableMethod(this,
-                        &RenderWidgetHelper::OnCrossSiteClosePageACK,
-                        params));
-}
-
-bool RenderWidgetHelper::WaitForUpdateMsg(int render_widget_id,
-                                          const base::TimeDelta& max_delay,
-                                          IPC::Message* msg) {
-  base::TimeTicks time_start = base::TimeTicks::Now();
-
-  for (;;) {
-    UpdateMsgProxy* proxy = NULL;
-    {
-      base::AutoLock lock(pending_paints_lock_);
-
-      UpdateMsgProxyMap::iterator it = pending_paints_.find(render_widget_id);
-      if (it != pending_paints_.end()) {
-        proxy = it->second;
-
-        // Flag the proxy as cancelled so that when it is run as a task it will
-        // do nothing.
-        proxy->cancelled = true;
-
-        pending_paints_.erase(it);
-      }
-    }
-
-    if (proxy) {
-      *msg = proxy->message;
-      DCHECK(msg->routing_id() == render_widget_id);
-      return true;
-    }
-
-    // Calculate the maximum amount of time that we are willing to sleep.
-    base::TimeDelta max_sleep_time =
-        max_delay - (base::TimeTicks::Now() - time_start);
-    if (max_sleep_time <= base::TimeDelta::FromMilliseconds(0))
-      break;
-
-    event_.TimedWait(max_sleep_time);
-  }
-
-  return false;
-}
-
-void RenderWidgetHelper::DidReceiveUpdateMsg(const IPC::Message& msg) {
-  int render_widget_id = msg.routing_id();
-
-  UpdateMsgProxy* proxy = NULL;
-  {
-    base::AutoLock lock(pending_paints_lock_);
-
-    // Visual Studio 2010 has problems converting NULL to the null pointer for
-    // std::pair.  See http://connect.microsoft.com/VisualStudio/feedback/details/520043/error-converting-from-null-to-a-pointer-type-in-std-pair
-    // It will work if we pass nullptr.
-#if defined(_MSC_VER) && _MSC_VER >= 1600
-    RenderWidgetHelper::UpdateMsgProxy* null_proxy = nullptr;
-#else
-    RenderWidgetHelper::UpdateMsgProxy* null_proxy = NULL;
-#endif
-    UpdateMsgProxyMap::value_type new_value(render_widget_id, null_proxy);
-
-    // We expect only a single PaintRect message at a time.  Optimize for the
-    // case that we don't already have an entry by using the 'insert' method.
-    std::pair<UpdateMsgProxyMap::iterator, bool> result =
-        pending_paints_.insert(new_value);
-    if (!result.second) {
-      NOTREACHED() << "Unexpected PaintRect message!";
-      return;
-    }
-
-    result.first->second = (proxy = new UpdateMsgProxy(this, msg));
-  }
-
-  // Notify anyone waiting on the UI thread that there is a new entry in the
-  // proxy map.  If they don't find the entry they are looking for, then they
-  // will just continue waiting.
-  event_.Signal();
-
-  // The proxy will be deleted when it is run as a task.
-  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, proxy);
-}
-
-void RenderWidgetHelper::OnDiscardUpdateMsg(UpdateMsgProxy* proxy) {
-  const IPC::Message& msg = proxy->message;
-
-  // Remove the proxy from the map now that we are going to handle it normally.
-  {
-    base::AutoLock lock(pending_paints_lock_);
-
-    UpdateMsgProxyMap::iterator it = pending_paints_.find(msg.routing_id());
-    DCHECK(it != pending_paints_.end());
-    DCHECK(it->second == proxy);
-
-    pending_paints_.erase(it);
-  }
-}
-
-void RenderWidgetHelper::OnDispatchUpdateMsg(UpdateMsgProxy* proxy) {
-  OnDiscardUpdateMsg(proxy);
-
-  // It is reasonable for the host to no longer exist.
-  RenderProcessHost* host = RenderProcessHost::FromID(render_process_id_);
-  if (host)
-    host->OnMessageReceived(proxy->message);
-}
-
-void RenderWidgetHelper::OnCancelResourceRequests(
-    int render_widget_id) {
-  resource_dispatcher_host_->CancelRequestsForRoute(
-      render_process_id_, render_widget_id);
-}
-
-void RenderWidgetHelper::OnCrossSiteClosePageACK(
-    const ViewMsg_ClosePage_Params& params) {
-  resource_dispatcher_host_->OnClosePageACK(params);
-}
-
-void RenderWidgetHelper::CreateNewWindow(
-    const ViewHostMsg_CreateWindow_Params& params,
-    base::ProcessHandle render_process,
-    int* route_id) {
-  *route_id = GetNextRoutingID();
-  // Block resource requests until the view is created, since the HWND might be
-  // needed if a response ends up creating a plugin.
-  resource_dispatcher_host_->BlockRequestsForRoute(
-      render_process_id_, *route_id);
-
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      NewRunnableMethod(
-          this, &RenderWidgetHelper::OnCreateWindowOnUI, params, *route_id));
-}
-
-void RenderWidgetHelper::OnCreateWindowOnUI(
-    const ViewHostMsg_CreateWindow_Params& params,
-    int route_id) {
-  RenderViewHost* host =
-      RenderViewHost::FromID(render_process_id_, params.opener_id);
-  if (host)
-    host->CreateNewWindow(route_id, params);
-
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      NewRunnableMethod(this, &RenderWidgetHelper::OnCreateWindowOnIO,
-                        route_id));
-}
-
-void RenderWidgetHelper::OnCreateWindowOnIO(int route_id) {
-  resource_dispatcher_host_->ResumeBlockedRequestsForRoute(
-      render_process_id_, route_id);
-}
-
-void RenderWidgetHelper::CreateNewWidget(int opener_id,
-                                         WebKit::WebPopupType popup_type,
-                                         int* route_id) {
-  *route_id = GetNextRoutingID();
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      NewRunnableMethod(
-          this, &RenderWidgetHelper::OnCreateWidgetOnUI, opener_id, *route_id,
-          popup_type));
-}
-
-void RenderWidgetHelper::CreateNewFullscreenWidget(int opener_id,
-                                                   int* route_id) {
-  *route_id = GetNextRoutingID();
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      NewRunnableMethod(
-          this, &RenderWidgetHelper::OnCreateFullscreenWidgetOnUI,
-          opener_id, *route_id));
-}
-
-void RenderWidgetHelper::OnCreateWidgetOnUI(
-    int opener_id, int route_id, WebKit::WebPopupType popup_type) {
-  RenderViewHost* host = RenderViewHost::FromID(render_process_id_, opener_id);
-  if (host)
-    host->CreateNewWidget(route_id, popup_type);
-}
-
-void RenderWidgetHelper::OnCreateFullscreenWidgetOnUI(int opener_id,
-                                                      int route_id) {
-  RenderViewHost* host = RenderViewHost::FromID(render_process_id_, opener_id);
-  if (host)
-    host->CreateNewFullscreenWidget(route_id);
-}
-
-#if defined(OS_MACOSX)
-TransportDIB* RenderWidgetHelper::MapTransportDIB(TransportDIB::Id dib_id) {
-  base::AutoLock locked(allocated_dibs_lock_);
-
-  const std::map<TransportDIB::Id, int>::iterator
-      i = allocated_dibs_.find(dib_id);
-  if (i == allocated_dibs_.end())
-    return NULL;
-
-  base::FileDescriptor fd(dup(i->second), true);
-  return TransportDIB::Map(fd);
-}
-
-void RenderWidgetHelper::AllocTransportDIB(
-    size_t size, bool cache_in_browser, TransportDIB::Handle* result) {
-  scoped_ptr<base::SharedMemory> shared_memory(new base::SharedMemory());
-  if (!shared_memory->CreateAnonymous(size)) {
-    result->fd = -1;
-    result->auto_close = false;
-    return;
-  }
-
-  shared_memory->GiveToProcess(0 /* pid, not needed */, result);
-
-  if (cache_in_browser) {
-    // Keep a copy of the file descriptor around
-    base::AutoLock locked(allocated_dibs_lock_);
-    allocated_dibs_[shared_memory->id()] = dup(result->fd);
-  }
-}
-
-void RenderWidgetHelper::FreeTransportDIB(TransportDIB::Id dib_id) {
-  base::AutoLock locked(allocated_dibs_lock_);
-
-  const std::map<TransportDIB::Id, int>::iterator
-    i = allocated_dibs_.find(dib_id);
-
-  if (i != allocated_dibs_.end()) {
-    if (HANDLE_EINTR(close(i->second)) < 0)
-      PLOG(ERROR) << "close";
-    allocated_dibs_.erase(i);
-  } else {
-    DLOG(WARNING) << "Renderer asked us to free unknown transport DIB";
-  }
-}
-
-void RenderWidgetHelper::ClearAllocatedDIBs() {
-  for (std::map<TransportDIB::Id, int>::iterator
-       i = allocated_dibs_.begin(); i != allocated_dibs_.end(); ++i) {
-    if (HANDLE_EINTR(close(i->second)) < 0)
-      PLOG(ERROR) << "close: " << i->first;
-  }
-
-  allocated_dibs_.clear();
-}
-#endif