Remove some code inside USE_AURA and OS_WIN ifdefs.

content/browser/web_contents/web_contents_drag_win.cc

Index: content/browser/web_contents/web_contents_drag_win.cc
===================================================================
--- content/browser/web_contents/web_contents_drag_win.cc	(revision 244508)
+++ content/browser/web_contents/web_contents_drag_win.cc	(working copy)
@@ -1,443 +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/web_contents/web_contents_drag_win.h"
-
-#include <windows.h>
-
-#include <string>
-
-#include "base/bind.h"
-#include "base/file_util.h"
-#include "base/files/file_path.h"
-#include "base/message_loop/message_loop.h"
-#include "base/pickle.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/threading/platform_thread.h"
-#include "base/threading/thread.h"
-#include "content/browser/download/drag_download_file.h"
-#include "content/browser/download/drag_download_util.h"
-#include "content/browser/web_contents/web_drag_dest_win.h"
-#include "content/browser/web_contents/web_drag_source_win.h"
-#include "content/browser/web_contents/web_drag_utils_win.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/content_browser_client.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_view.h"
-#include "content/public/browser/web_drag_dest_delegate.h"
-#include "content/public/common/drop_data.h"
-#include "net/base/net_util.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "ui/base/clipboard/clipboard.h"
-#include "ui/base/clipboard/custom_data_helper.h"
-#include "ui/base/dragdrop/drag_utils.h"
-#include "ui/base/layout.h"
-#include "ui/base/win/scoped_ole_initializer.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/gfx/screen.h"
-#include "ui/gfx/size.h"
-
-using blink::WebDragOperationsMask;
-using blink::WebDragOperationCopy;
-using blink::WebDragOperationLink;
-using blink::WebDragOperationMove;
-
-namespace content {
-namespace {
-
-bool run_do_drag_drop = true;
-
-HHOOK msg_hook = NULL;
-DWORD drag_out_thread_id = 0;
-bool mouse_up_received = false;
-
-LRESULT CALLBACK MsgFilterProc(int code, WPARAM wparam, LPARAM lparam) {
-  if (code == base::MessagePumpForUI::kMessageFilterCode &&
-      !mouse_up_received) {
-    MSG* msg = reinterpret_cast<MSG*>(lparam);
-    // We do not care about WM_SYSKEYDOWN and WM_SYSKEYUP because when ALT key
-    // is pressed down on drag-and-drop, it means to create a link.
-    if (msg->message == WM_MOUSEMOVE || msg->message == WM_LBUTTONUP ||
-        msg->message == WM_KEYDOWN || msg->message == WM_KEYUP) {
-      // Forward the message from the UI thread to the drag-and-drop thread.
-      PostThreadMessage(drag_out_thread_id,
-                        msg->message,
-                        msg->wParam,
-                        msg->lParam);
-
-      // If the left button is up, we do not need to forward the message any
-      // more.
-      if (msg->message == WM_LBUTTONUP || !(GetKeyState(VK_LBUTTON) & 0x8000))
-        mouse_up_received = true;
-
-      return TRUE;
-    }
-  }
-  return CallNextHookEx(msg_hook, code, wparam, lparam);
-}
-
-void EnableBackgroundDraggingSupport(DWORD thread_id) {
-  // Install a hook procedure to monitor the messages so that we can forward
-  // the appropriate ones to the background thread.
-  drag_out_thread_id = thread_id;
-  mouse_up_received = false;
-  DCHECK(!msg_hook);
-  msg_hook = SetWindowsHookEx(WH_MSGFILTER,
-                              MsgFilterProc,
-                              NULL,
-                              GetCurrentThreadId());
-
-  // Attach the input state of the background thread to the UI thread so that
-  // SetCursor can work from the background thread.
-  AttachThreadInput(drag_out_thread_id, GetCurrentThreadId(), TRUE);
-}
-
-void DisableBackgroundDraggingSupport() {
-  DCHECK(msg_hook);
-  AttachThreadInput(drag_out_thread_id, GetCurrentThreadId(), FALSE);
-  UnhookWindowsHookEx(msg_hook);
-  msg_hook = NULL;
-}
-
-bool IsBackgroundDraggingSupportEnabled() {
-  return msg_hook != NULL;
-}
-
-}  // namespace
-
-class DragDropThread : public base::Thread {
- public:
-  explicit DragDropThread(WebContentsDragWin* drag_handler)
-       : Thread("Chrome_DragDropThread"),
-         drag_handler_(drag_handler) {
-  }
-
-  virtual ~DragDropThread() {
-    Stop();
-  }
-
- protected:
-  // base::Thread implementations:
-  virtual void Init() {
-    ole_initializer_.reset(new ui::ScopedOleInitializer());
-  }
-
-  virtual void CleanUp() {
-    ole_initializer_.reset();
-  }
-
- private:
-  scoped_ptr<ui::ScopedOleInitializer> ole_initializer_;
-
-  // Hold a reference count to WebContentsDragWin to make sure that it is always
-  // alive in the thread lifetime.
-  scoped_refptr<WebContentsDragWin> drag_handler_;
-
-  DISALLOW_COPY_AND_ASSIGN(DragDropThread);
-};
-
-WebContentsDragWin::WebContentsDragWin(
-    gfx::NativeWindow source_window,
-    WebContents* web_contents,
-    WebDragDest* drag_dest,
-    const base::Callback<void()>& drag_end_callback)
-    : drag_drop_thread_id_(0),
-      source_window_(source_window),
-      web_contents_(web_contents),
-      drag_dest_(drag_dest),
-      drag_ended_(false),
-      drag_end_callback_(drag_end_callback) {
-}
-
-WebContentsDragWin::~WebContentsDragWin() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK(!drag_drop_thread_.get());
-}
-
-void WebContentsDragWin::StartDragging(const DropData& drop_data,
-                                       WebDragOperationsMask ops,
-                                       const gfx::ImageSkia& image,
-                                       const gfx::Vector2d& image_offset) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  drag_source_ = new WebDragSource(source_window_, web_contents_);
-
-  const GURL& page_url = web_contents_->GetLastCommittedURL();
-  const std::string& page_encoding = web_contents_->GetEncoding();
-
-  // If it is not drag-out, do the drag-and-drop in the current UI thread.
-  if (drop_data.download_metadata.empty()) {
-    if (DoDragging(drop_data, ops, page_url, page_encoding,
-                   image, image_offset))
-      EndDragging();
-    return;
-  }
-
-  // Start a background thread to do the drag-and-drop.
-  DCHECK(!drag_drop_thread_.get());
-  drag_drop_thread_.reset(new DragDropThread(this));
-  base::Thread::Options options;
-  options.message_loop_type = base::MessageLoop::TYPE_UI;
-  if (drag_drop_thread_->StartWithOptions(options)) {
-    drag_drop_thread_->message_loop()->PostTask(
-        FROM_HERE,
-        base::Bind(&WebContentsDragWin::StartBackgroundDragging, this,
-                   drop_data, ops, page_url, page_encoding,
-                   image, image_offset));
-  }
-
-  EnableBackgroundDraggingSupport(drag_drop_thread_->thread_id());
-}
-
-void WebContentsDragWin::StartBackgroundDragging(
-    const DropData& drop_data,
-    WebDragOperationsMask ops,
-    const GURL& page_url,
-    const std::string& page_encoding,
-    const gfx::ImageSkia& image,
-    const gfx::Vector2d& image_offset) {
-  drag_drop_thread_id_ = base::PlatformThread::CurrentId();
-
-  if (DoDragging(drop_data, ops, page_url, page_encoding,
-                 image, image_offset)) {
-    BrowserThread::PostTask(
-        BrowserThread::UI,
-        FROM_HERE,
-        base::Bind(&WebContentsDragWin::EndDragging, this));
-  } else {
-    // When DoDragging returns false, the contents view window is gone and thus
-    // WebContentsViewWin instance becomes invalid though WebContentsDragWin
-    // instance is still alive because the task holds a reference count to it.
-    // We should not do more than the following cleanup items:
-    // 1) Remove the background dragging support. This is safe since it does not
-    //    access the instance at all.
-    // 2) Stop the background thread. This is done in OnDataObjectDisposed.
-    //    Only drag_drop_thread_ member is accessed.
-    BrowserThread::PostTask(
-        BrowserThread::UI,
-        FROM_HERE,
-        base::Bind(&DisableBackgroundDraggingSupport));
-  }
-}
-
-void WebContentsDragWin::PrepareDragForDownload(
-    const DropData& drop_data,
-    ui::OSExchangeData* data,
-    const GURL& page_url,
-    const std::string& page_encoding) {
-  // Parse the download metadata.
-  base::string16 mime_type;
-  base::FilePath file_name;
-  GURL download_url;
-  if (!ParseDownloadMetadata(drop_data.download_metadata,
-                             &mime_type,
-                             &file_name,
-                             &download_url))
-    return;
-
-  // Generate the file name based on both mime type and proposed file name.
-  std::string default_name =
-      GetContentClient()->browser()->GetDefaultDownloadName();
-  base::FilePath generated_download_file_name =
-      net::GenerateFileName(download_url,
-                            std::string(),
-                            std::string(),
-                            base::UTF16ToUTF8(file_name.value()),
-                            base::UTF16ToUTF8(mime_type),
-                            default_name);
-  base::FilePath temp_dir_path;
-  if (!base::CreateNewTempDirectory(FILE_PATH_LITERAL("chrome_drag"),
-                                    &temp_dir_path))
-    return;
-  base::FilePath download_path =
-      temp_dir_path.Append(generated_download_file_name);
-
-  // We cannot know when the target application will be done using the temporary
-  // file, so schedule it to be deleted after rebooting.
-  base::DeleteFileAfterReboot(download_path);
-  base::DeleteFileAfterReboot(temp_dir_path);
-
-  // Provide the data as file (CF_HDROP). A temporary download file with the
-  // Zone.Identifier ADS (Alternate Data Stream) attached will be created.
-  scoped_refptr<DragDownloadFile> download_file =
-      new DragDownloadFile(
-          download_path,
-          scoped_ptr<net::FileStream>(),
-          download_url,
-          Referrer(page_url, drop_data.referrer_policy),
-          page_encoding,
-          web_contents_);
-  ui::OSExchangeData::DownloadFileInfo file_download(base::FilePath(),
-                                                     download_file.get());
-  data->SetDownloadFileInfo(file_download);
-
-  // Enable asynchronous operation.
-  ui::OSExchangeDataProviderWin::GetIAsyncOperation(*data)->SetAsyncMode(TRUE);
-}
-
-void WebContentsDragWin::PrepareDragForFileContents(
-    const DropData& drop_data, ui::OSExchangeData* data) {
-  static const int kMaxFilenameLength = 255;  // FAT and NTFS
-  base::FilePath file_name(drop_data.file_description_filename);
-
-  // Images without ALT text will only have a file extension so we need to
-  // synthesize one from the provided extension and URL.
-  if (file_name.BaseName().RemoveExtension().empty()) {
-    const base::string16 extension = file_name.Extension();
-    // Retrieve the name from the URL.
-    file_name = base::FilePath(
-        net::GetSuggestedFilename(drop_data.url, "", "", "", "", ""));
-    if (file_name.value().size() + extension.size() > kMaxFilenameLength) {
-      file_name = base::FilePath(file_name.value().substr(
-          0, kMaxFilenameLength - extension.size()));
-    }
-    file_name = file_name.ReplaceExtension(extension);
-  }
-  data->SetFileContents(file_name, drop_data.file_contents);
-}
-
-void WebContentsDragWin::PrepareDragForUrl(const DropData& drop_data,
-                                           ui::OSExchangeData* data) {
-  if (drag_dest_->delegate() &&
-      drag_dest_->delegate()->AddDragData(drop_data, data)) {
-    return;
-  }
-
-  data->SetURL(drop_data.url, drop_data.url_title);
-}
-
-bool WebContentsDragWin::DoDragging(const DropData& drop_data,
-                                    WebDragOperationsMask ops,
-                                    const GURL& page_url,
-                                    const std::string& page_encoding,
-                                    const gfx::ImageSkia& image,
-                                    const gfx::Vector2d& image_offset) {
-  ui::OSExchangeData data;
-
-  if (!drop_data.download_metadata.empty()) {
-    PrepareDragForDownload(drop_data, &data, page_url, page_encoding);
-
-    // Set the observer.
-    ui::OSExchangeDataProviderWin::GetDataObjectImpl(data)->set_observer(this);
-  }
-
-  // We set the file contents before the URL because the URL also sets file
-  // contents (to a .URL shortcut).  We want to prefer file content data over
-  // a shortcut so we add it first.
-  if (!drop_data.file_contents.empty())
-    PrepareDragForFileContents(drop_data, &data);
-  if (!drop_data.html.string().empty())
-    data.SetHtml(drop_data.html.string(), drop_data.html_base_url);
-  // We set the text contents before the URL because the URL also sets text
-  // content.
-  if (!drop_data.text.string().empty())
-    data.SetString(drop_data.text.string());
-  if (drop_data.url.is_valid())
-    PrepareDragForUrl(drop_data, &data);
-  if (!drop_data.custom_data.empty()) {
-    Pickle pickle;
-    ui::WriteCustomDataToPickle(drop_data.custom_data, &pickle);
-    data.SetPickledData(ui::Clipboard::GetWebCustomDataFormatType(), pickle);
-  }
-
-  // Set drag image.
-  if (!image.isNull()) {
-    drag_utils::SetDragImageOnDataObject(image,
-        gfx::Size(image.width(), image.height()), image_offset, &data);
-  }
-
-  // Use a local variable to keep track of the contents view window handle.
-  // It might not be safe to access the instance after DoDragDrop returns
-  // because the window could be disposed in the nested message loop.
-  HWND native_window = web_contents_->GetView()->GetNativeView();
-
-  // We need to enable recursive tasks on the message loop so we can get
-  // updates while in the system DoDragDrop loop.
-  DWORD effect = DROPEFFECT_NONE;
-  if (run_do_drag_drop) {
-    // Keep a reference count such that |drag_source_| will not get deleted
-    // if the contents view window is gone in the nested message loop invoked
-    // from DoDragDrop.
-    scoped_refptr<WebDragSource> retain_source(drag_source_);
-    retain_source->set_data(&data);
-    data.SetInDragLoop(true);
-
-    base::MessageLoop::ScopedNestableTaskAllower allow(
-        base::MessageLoop::current());
-    DoDragDrop(ui::OSExchangeDataProviderWin::GetIDataObject(data),
-               drag_source_,
-               WebDragOpMaskToWinDragOpMask(ops),
-               &effect);
-    retain_source->set_data(NULL);
-  }
-
-  // Bail out immediately if the contents view window is gone.
-  if (!IsWindow(native_window))
-    return false;
-
-  // Normally, the drop and dragend events get dispatched in the system
-  // DoDragDrop message loop so it'd be too late to set the effect to send back
-  // to the renderer here. However, we use PostTask to delay the execution of
-  // WebDragSource::OnDragSourceDrop, which means that the delayed dragend
-  // callback to the renderer doesn't run until this has been set to the correct
-  // value.
-  drag_source_->set_effect(effect);
-
-  return true;
-}
-
-void WebContentsDragWin::EndDragging() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  if (drag_ended_)
-    return;
-  drag_ended_ = true;
-
-  if (IsBackgroundDraggingSupportEnabled())
-    DisableBackgroundDraggingSupport();
-
-  drag_end_callback_.Run();
-}
-
-void WebContentsDragWin::CancelDrag() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  drag_source_->CancelDrag();
-}
-
-void WebContentsDragWin::CloseThread() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  drag_drop_thread_.reset();
-}
-
-void WebContentsDragWin::OnWaitForData() {
-  DCHECK(drag_drop_thread_id_ == base::PlatformThread::CurrentId());
-
-  // When the left button is release and we start to wait for the data, end
-  // the dragging before DoDragDrop returns. This makes the page leave the drag
-  // mode so that it can start to process the normal input events.
-  BrowserThread::PostTask(
-      BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&WebContentsDragWin::EndDragging, this));
-}
-
-void WebContentsDragWin::OnDataObjectDisposed() {
-  DCHECK(drag_drop_thread_id_ == base::PlatformThread::CurrentId());
-
-  // The drag-and-drop thread is only closed after OLE is done with
-  // DataObjectImpl.
-  BrowserThread::PostTask(
-      BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&WebContentsDragWin::CloseThread, this));
-}
-
-// static
-void WebContentsDragWin::DisableDragDropForTesting() {
-  run_do_drag_drop = false;
-}
-
-}  // namespace content