Stubs out OSExchangeData for views on gtk.

app/os_exchange_data.cc

Index: app/os_exchange_data.cc
===================================================================
--- app/os_exchange_data.cc	(revision 15959)
+++ app/os_exchange_data.cc	(working copy)
@@ -1,706 +0,0 @@
-// Copyright (c) 2006-2008 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 <shlobj.h>
-
-#include "app/os_exchange_data.h"
-
-#include "app/l10n_util.h"
-#include "base/clipboard_util.h"
-#include "base/file_util.h"
-#include "base/logging.h"
-#include "base/pickle.h"
-#include "base/scoped_handle.h"
-#include "base/stl_util-inl.h"
-#include "base/string_util.h"
-#include "googleurl/src/gurl.h"
-#include "grit/generated_resources.h"
-#include "net/base/net_util.h"
-
-// Creates a new STGMEDIUM object to hold the specified text. The caller
-// owns the resulting object. The "Bytes" version does not NULL terminate, the
-// string version does.
-static STGMEDIUM* GetStorageForBytes(const char* data, size_t bytes);
-static STGMEDIUM* GetStorageForWString(const std::wstring& data);
-static STGMEDIUM* GetStorageForString(const std::string& data);
-// Creates the contents of an Internet Shortcut file for the given URL.
-static void GetInternetShortcutFileContents(const GURL& url, std::string* data);
-// Creates a valid file name given a suggested title and URL.
-static void CreateValidFileNameFromTitle(const GURL& url,
-                                         const std::wstring& title,
-                                         std::wstring* validated);
-// Creates a File Descriptor for the creation of a file to the given URL and
-// returns a handle to it.
-static STGMEDIUM* GetStorageForFileDescriptor(
-    const std::wstring& valid_file_name);
-
-///////////////////////////////////////////////////////////////////////////////
-// FormatEtcEnumerator
-
-//
-// This object implements an enumeration interface. The existence of an
-// implementation of this interface is exposed to clients through
-// OSExchangeData's EnumFormatEtc method. Our implementation is nobody's
-// business but our own, so it lives in this file.
-//
-// This Windows API is truly a gem. It wants to be an enumerator but assumes
-// some sort of sequential data (why not just use an array?). See comments
-// throughout.
-//
-class FormatEtcEnumerator : public IEnumFORMATETC {
- public:
-  FormatEtcEnumerator(OSExchangeData::StoredData::const_iterator begin,
-                      OSExchangeData::StoredData::const_iterator end);
-  ~FormatEtcEnumerator();
-
-  // IEnumFORMATETC implementation:
-  HRESULT __stdcall Next(
-      ULONG count, FORMATETC* elements_array, ULONG* elements_fetched);
-  HRESULT __stdcall Skip(ULONG skip_count);
-  HRESULT __stdcall Reset();
-  HRESULT __stdcall Clone(IEnumFORMATETC** clone);
-
-  // IUnknown implementation:
-  HRESULT __stdcall QueryInterface(const IID& iid, void** object);
-  ULONG __stdcall AddRef();
-  ULONG __stdcall Release();
-
- private:
-  // This can only be called from |CloneFromOther|, since it initializes the
-  // contents_ from the other enumerator's contents.
-  FormatEtcEnumerator() : ref_count_(0) {
-  }
-
-  // Clone a new FormatEtc from another instance of this enumeration.
-  static FormatEtcEnumerator* CloneFromOther(const FormatEtcEnumerator* other);
-
- private:
-  // We are _forced_ to use a vector as our internal data model as Windows'
-  // retarded IEnumFORMATETC API assumes a deterministic ordering of elements
-  // through methods like Next and Skip. This exposes the underlying data
-  // structure to the user. Bah.
-  std::vector<FORMATETC*> contents_;
-
-  // The cursor of the active enumeration - an index into |contents_|.
-  int cursor_;
-
-  LONG ref_count_;
-
-  DISALLOW_EVIL_CONSTRUCTORS(FormatEtcEnumerator);
-};
-
-// Safely makes a copy of all of the relevant bits of a FORMATETC object.
-static void CloneFormatEtc(FORMATETC* source, FORMATETC* clone) {
-  *clone = *source;
-  if (source->ptd) {
-    source->ptd =
-        static_cast<DVTARGETDEVICE*>(CoTaskMemAlloc(sizeof(DVTARGETDEVICE)));
-    *(clone->ptd) = *(source->ptd);
-  }
-}
-
-FormatEtcEnumerator::FormatEtcEnumerator(
-    OSExchangeData::StoredData::const_iterator start,
-    OSExchangeData::StoredData::const_iterator end)
-    : ref_count_(0), cursor_(0) {
-  // Copy FORMATETC data from our source into ourselves.
-  while (start != end) {
-    FORMATETC* format_etc = new FORMATETC;
-    CloneFormatEtc(&(*start)->format_etc, format_etc);
-    contents_.push_back(format_etc);
-    ++start;
-  }
-}
-
-FormatEtcEnumerator::~FormatEtcEnumerator() {
-  STLDeleteContainerPointers(contents_.begin(), contents_.end());
-}
-
-STDMETHODIMP FormatEtcEnumerator::Next(
-    ULONG count, FORMATETC* elements_array, ULONG* elements_fetched) {
-  // MSDN says |elements_fetched| is allowed to be NULL if count is 1.
-  if (!elements_fetched)
-    DCHECK(count == 1);
-
-  // This method copies count elements into |elements_array|.
-  int index = 0;
-  while (cursor_ < static_cast<int>(contents_.size()) &&
-         static_cast<ULONG>(index) < count) {
-    CloneFormatEtc(contents_.at(cursor_), &elements_array[index]);
-    ++cursor_;
-    ++index;
-  }
-  // The out param is for how many we actually copied.
-  if (elements_fetched)
-    *elements_fetched = index;
-
-  // If the two don't agree, then we fail.
-  return index == count ? S_OK : S_FALSE;
-}
-
-STDMETHODIMP FormatEtcEnumerator::Skip(ULONG skip_count) {
-  cursor_ += skip_count;
-  // MSDN implies it's OK to leave the enumerator trashed.
-  // "Whatever you say, boss"
-  return cursor_ <= static_cast<int>(contents_.size()) ? S_OK : S_FALSE;
-}
-
-STDMETHODIMP FormatEtcEnumerator::Reset() {
-  cursor_ = 0;
-  return S_OK;
-}
-
-STDMETHODIMP FormatEtcEnumerator::Clone(IEnumFORMATETC** clone) {
-  // Clone the current enumerator in its exact state, including cursor.
-  FormatEtcEnumerator* e = CloneFromOther(this);
-  e->AddRef();
-  *clone = e;
-  return S_OK;
-}
-
-STDMETHODIMP FormatEtcEnumerator::QueryInterface(const IID& iid,
-                                                 void** object) {
-  *object = NULL;
-  if (IsEqualIID(iid, IID_IUnknown) || IsEqualIID(iid, IID_IEnumFORMATETC)) {
-    *object = this;
-  } else {
-    return E_NOINTERFACE;
-  }
-  AddRef();
-  return S_OK;
-}
-
-ULONG FormatEtcEnumerator::AddRef() {
-  return InterlockedIncrement(&ref_count_);
-}
-
-ULONG FormatEtcEnumerator::Release() {
-  if (InterlockedDecrement(&ref_count_) == 0) {
-    ULONG copied_refcnt = ref_count_;
-    delete this;
-    return copied_refcnt;
-  }
-  return ref_count_;
-}
-
-// static
-FormatEtcEnumerator* FormatEtcEnumerator::CloneFromOther(
-    const FormatEtcEnumerator* other) {
-  FormatEtcEnumerator* e = new FormatEtcEnumerator;
-  // Copy FORMATETC data from our source into ourselves.
-  std::vector<FORMATETC*>::const_iterator start = other->contents_.begin();
-  while (start != other->contents_.end()) {
-    FORMATETC* format_etc = new FORMATETC;
-    CloneFormatEtc(*start, format_etc);
-    e->contents_.push_back(format_etc);
-    ++start;
-  }
-  // Carry over
-  e->cursor_ = other->cursor_;
-  return e;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// OSExchangeData, public:
-
-// static
-bool OSExchangeData::HasPlainTextURL(IDataObject* source) {
-  std::wstring plain_text;
-  return (ClipboardUtil::GetPlainText(source, &plain_text) &&
-          !plain_text.empty() && GURL(plain_text).is_valid());
-}
-
-// static
-bool OSExchangeData::GetPlainTextURL(IDataObject* source, GURL* url) {
-  std::wstring plain_text;
-  if (ClipboardUtil::GetPlainText(source, &plain_text) &&
-      !plain_text.empty()) {
-    GURL gurl(plain_text);
-    if (gurl.is_valid()) {
-      *url = gurl;
-      return true;
-    }
-  }
-  return false;
-}
-
-OSExchangeData::OSExchangeData()
-    : ref_count_(0) {
-}
-
-OSExchangeData::OSExchangeData(IDataObject* source)
-    : ref_count_(0) {
-  source_object_ = source;
-}
-
-OSExchangeData::~OSExchangeData() {
-  STLDeleteContainerPointers(contents_.begin(), contents_.end());
-}
-
-void OSExchangeData::SetString(const std::wstring& data) {
-  STGMEDIUM* storage = GetStorageForWString(data);
-  contents_.push_back(new StoredDataInfo(CF_UNICODETEXT, storage));
-
-  // Also add plain text.
-  storage = GetStorageForString(WideToUTF8(data));
-  contents_.push_back(new StoredDataInfo(CF_TEXT, storage));
-}
-
-void OSExchangeData::SetURL(const GURL& url, const std::wstring& title) {
-  // NOTE WELL:
-  // Every time you change the order of the first two CLIPFORMATS that get
-  // added here, you need to update the EnumerationViaCOM test case in
-  // the _unittest.cc file to reflect the new arrangement otherwise that test
-  // will fail! It assumes an insertion order.
-
-  // Add text/x-moz-url for drags from Firefox
-  std::wstring x_moz_url_str = UTF8ToWide(url.spec());
-  x_moz_url_str += '\n';
-  x_moz_url_str += title;
-  STGMEDIUM* storage = GetStorageForWString(x_moz_url_str);
-  contents_.push_back(new StoredDataInfo(
-      ClipboardUtil::GetMozUrlFormat()->cfFormat, storage));
-
-  // Add a .URL shortcut file for dragging to Explorer.
-  std::wstring valid_file_name;
-  CreateValidFileNameFromTitle(url, title, &valid_file_name);
-  std::string shortcut_url_file_contents;
-  GetInternetShortcutFileContents(url, &shortcut_url_file_contents);
-  SetFileContents(valid_file_name, shortcut_url_file_contents);
-
-  // Add a UniformResourceLocator link for apps like IE and Word.
-  storage = GetStorageForWString(UTF8ToWide(url.spec()));
-  contents_.push_back(new StoredDataInfo(
-      ClipboardUtil::GetUrlWFormat()->cfFormat, storage));
-  storage = GetStorageForString(url.spec());
-  contents_.push_back(new StoredDataInfo(
-      ClipboardUtil::GetUrlFormat()->cfFormat, storage));
-
-  // TODO(beng): (http://b/1085501) add CF_HTML...
-
-  // Also add text representations (these should be last since they're the
-  // least preferable).
-  storage = GetStorageForWString(UTF8ToWide(url.spec()));
-  contents_.push_back(new StoredDataInfo(CF_UNICODETEXT, storage));
-  storage = GetStorageForString(url.spec());
-  contents_.push_back(new StoredDataInfo(CF_TEXT, storage));
-}
-
-void OSExchangeData::SetFilename(const std::wstring& full_path) {
-  const size_t drop_size = sizeof(DROPFILES);
-  const size_t bytes = drop_size + (full_path.length() + 2) * sizeof(wchar_t);
-  HANDLE hdata = ::GlobalAlloc(GMEM_MOVEABLE, bytes);
-  if (!hdata)
-    return;
-
-  ScopedHGlobal<DROPFILES> locked_mem(hdata);
-  DROPFILES* drop_files = locked_mem.get();
-  drop_files->pFiles = sizeof(DROPFILES);
-  drop_files->fWide = TRUE;
-  wchar_t* data = reinterpret_cast<wchar_t*>((BYTE*)(drop_files) + drop_size);
-  const size_t copy_size = (full_path.length() + 1) * sizeof(wchar_t);
-  memcpy(data, full_path.c_str(), copy_size);
-  data[full_path.length() + 1] = L'\0';  // Double NULL
-
-  // Set up the STGMEDIUM
-  STGMEDIUM* storage = new STGMEDIUM;
-  storage->tymed = TYMED_HGLOBAL;
-  storage->hGlobal = drop_files;
-  storage->pUnkForRelease = NULL;
-
-  // Set up the StoredDataInfo
-  StoredDataInfo* info = new StoredDataInfo(CF_HDROP, storage);
-  contents_.push_back(info);
-}
-
-void OSExchangeData::SetPickledData(CLIPFORMAT format, const Pickle& data) {
-  STGMEDIUM* storage = GetStorageForString(
-      std::string(static_cast<const char *>(data.data()),
-      static_cast<size_t>(data.size())));
-  contents_.push_back(new StoredDataInfo(format, storage));
-}
-
-void OSExchangeData::SetFileContents(const std::wstring& filename,
-                                     const std::string& file_contents) {
-  // Add CFSTR_FILEDESCRIPTOR
-  STGMEDIUM* storage = GetStorageForFileDescriptor(filename);
-  contents_.push_back(new StoredDataInfo(
-      ClipboardUtil::GetFileDescriptorFormat()->cfFormat, storage));
-
-  // Add CFSTR_FILECONTENTS
-  storage = GetStorageForBytes(file_contents.data(), file_contents.length());
-  contents_.push_back(new StoredDataInfo(
-      ClipboardUtil::GetFileContentFormatZero()->cfFormat, storage));
-}
-
-void OSExchangeData::SetHtml(const std::wstring& html, const GURL& base_url) {
-  // Add both MS CF_HTML and text/html format.  CF_HTML should be in utf-8.
-  std::string utf8_html = WideToUTF8(html);
-  std::string url = base_url.is_valid() ? base_url.spec() : std::string();
-
-  std::string cf_html = ClipboardUtil::HtmlToCFHtml(utf8_html, url);
-  STGMEDIUM* storage = GetStorageForBytes(cf_html.c_str(), cf_html.size());
-  contents_.push_back(new StoredDataInfo(
-      ClipboardUtil::GetHtmlFormat()->cfFormat, storage));
-
-  STGMEDIUM* storage_plain = GetStorageForBytes(utf8_html.c_str(),
-                                                utf8_html.size());
-  contents_.push_back(new StoredDataInfo(
-      ClipboardUtil::GetTextHtmlFormat()->cfFormat, storage_plain));
-}
-
-bool OSExchangeData::GetString(std::wstring* data) const {
-  return ClipboardUtil::GetPlainText(source_object_, data);
-}
-
-bool OSExchangeData::GetURLAndTitle(GURL* url, std::wstring* title) const {
-  std::wstring url_str;
-  bool success = ClipboardUtil::GetUrl(source_object_, &url_str, title);
-  if (success) {
-    GURL test_url(url_str);
-    if (test_url.is_valid()) {
-      *url = test_url;
-      return true;
-    }
-  } else if (GetPlainTextURL(source_object_, url)) {
-    title->clear();
-    return true;
-  }
-  return false;
-}
-
-bool OSExchangeData::GetFilename(std::wstring* full_path) const {
-  std::vector<std::wstring> filenames;
-  bool success = ClipboardUtil::GetFilenames(source_object_, &filenames);
-  if (success)
-    full_path->assign(filenames[0]);
-  return success;
-}
-
-bool OSExchangeData::GetPickledData(CLIPFORMAT format, Pickle* data) const {
-  DCHECK(data);
-  FORMATETC format_etc =
-      { format, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
-  bool success = false;
-  STGMEDIUM medium;
-  if (SUCCEEDED(source_object_->GetData(&format_etc, &medium))) {
-    if (medium.tymed & TYMED_HGLOBAL) {
-      ScopedHGlobal<char> c_data(medium.hGlobal);
-      DCHECK(c_data.Size() > 0);
-      // Need to subtract 1 as SetPickledData adds an extra byte to the end.
-      *data = Pickle(c_data.get(), static_cast<int>(c_data.Size() - 1));
-      success = true;
-    }
-    ReleaseStgMedium(&medium);
-  }
-  return success;
-}
-
-bool OSExchangeData::GetFileContents(std::wstring* filename,
-                                     std::string* file_contents) const {
-  return ClipboardUtil::GetFileContents(source_object_, filename,
-                                        file_contents);
-}
-
-bool OSExchangeData::GetHtml(std::wstring* html, GURL* base_url) const {
-  std::string url;
-  bool success = ClipboardUtil::GetHtml(source_object_, html, &url);
-  if (success)
-    *base_url = GURL(url);
-  return success;
-}
-
-bool OSExchangeData::HasString() const {
-  return ClipboardUtil::HasPlainText(source_object_);
-}
-
-bool OSExchangeData::HasURL() const {
-  return (ClipboardUtil::HasUrl(source_object_) ||
-          HasPlainTextURL(source_object_));
-}
-
-bool OSExchangeData::HasFile() const {
-  return ClipboardUtil::HasFilenames(source_object_);
-}
-
-bool OSExchangeData::HasFormat(CLIPFORMAT format) const {
-  FORMATETC format_etc =
-      { format, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
-  return (source_object_->QueryGetData(&format_etc) == S_OK);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// OSExchangeData, IDataObject implementation:
-
-// The following function, DuplicateMedium, is derived from WCDataObject.cpp
-// in the WebKit source code. This is the license information for the file:
-/*
- * Copyright (C) 2007 Apple Inc.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-static void DuplicateMedium(CLIPFORMAT source_clipformat,
-                            STGMEDIUM* source,
-                            STGMEDIUM* destination) {
-  switch (source->tymed) {
-    case TYMED_HGLOBAL:
-      destination->hGlobal =
-          static_cast<HGLOBAL>(OleDuplicateData(
-              source->hGlobal, source_clipformat, 0));
-      break;
-    case TYMED_MFPICT:
-      destination->hMetaFilePict =
-          static_cast<HMETAFILEPICT>(OleDuplicateData(
-              source->hMetaFilePict, source_clipformat, 0));
-      break;
-    case TYMED_GDI:
-      destination->hBitmap =
-          static_cast<HBITMAP>(OleDuplicateData(
-              source->hBitmap, source_clipformat, 0));
-      break;
-    case TYMED_ENHMF:
-      destination->hEnhMetaFile =
-          static_cast<HENHMETAFILE>(OleDuplicateData(
-              source->hEnhMetaFile, source_clipformat, 0));
-      break;
-    case TYMED_FILE:
-      destination->lpszFileName =
-          static_cast<LPOLESTR>(OleDuplicateData(
-              source->lpszFileName, source_clipformat, 0));
-      break;
-    case TYMED_ISTREAM:
-      destination->pstm = source->pstm;
-      destination->pstm->AddRef();
-      break;
-    case TYMED_ISTORAGE:
-      destination->pstg = source->pstg;
-      destination->pstg->AddRef();
-      break;
-  }
-
-  destination->tymed = source->tymed;
-  destination->pUnkForRelease = source->pUnkForRelease;
-  if (destination->pUnkForRelease)
-    destination->pUnkForRelease->AddRef();
-}
-
-HRESULT OSExchangeData::GetData(FORMATETC* format_etc, STGMEDIUM* medium) {
-  StoredData::const_iterator iter = contents_.begin();
-  while (iter != contents_.end()) {
-    if ((*iter)->format_etc.cfFormat == format_etc->cfFormat) {
-      DuplicateMedium((*iter)->format_etc.cfFormat, (*iter)->medium, medium);
-      return S_OK;
-    }
-    ++iter;
-  }
-
-  return DV_E_FORMATETC;
-}
-
-HRESULT OSExchangeData::GetDataHere(FORMATETC* format_etc, STGMEDIUM* medium) {
-  return DATA_E_FORMATETC;
-}
-
-HRESULT OSExchangeData::QueryGetData(FORMATETC* format_etc) {
-  StoredData::const_iterator iter = contents_.begin();
-  while (iter != contents_.end()) {
-    if ((*iter)->format_etc.cfFormat == format_etc->cfFormat)
-      return S_OK;
-    ++iter;
-  }
-  return DV_E_FORMATETC;
-}
-
-HRESULT OSExchangeData::GetCanonicalFormatEtc(
-    FORMATETC* format_etc, FORMATETC* result) {
-  format_etc->ptd = NULL;
-  return E_NOTIMPL;
-}
-
-HRESULT OSExchangeData::SetData(
-    FORMATETC* format_etc, STGMEDIUM* medium, BOOL should_release) {
-  STGMEDIUM* local_medium = new STGMEDIUM;
-  if (should_release) {
-    *local_medium = *medium;
-  } else {
-    DuplicateMedium(format_etc->cfFormat, medium, local_medium);
-  }
-
-  StoredDataInfo* info =
-      new StoredDataInfo(format_etc->cfFormat, local_medium);
-  info->medium->tymed = format_etc->tymed;
-  info->owns_medium = !!should_release;
-  contents_.push_back(info);
-
-  return S_OK;
-}
-
-HRESULT OSExchangeData::EnumFormatEtc(
-    DWORD direction, IEnumFORMATETC** enumerator) {
-  if (direction == DATADIR_GET) {
-    FormatEtcEnumerator* e =
-        new FormatEtcEnumerator(contents_.begin(), contents_.end());
-    e->AddRef();
-    *enumerator = e;
-    return S_OK;
-  }
-  return E_NOTIMPL;
-}
-
-HRESULT OSExchangeData::DAdvise(
-    FORMATETC* format_etc, DWORD advf, IAdviseSink* sink, DWORD* connection) {
-  return OLE_E_ADVISENOTSUPPORTED;
-}
-
-HRESULT OSExchangeData::DUnadvise(DWORD connection) {
-  return OLE_E_ADVISENOTSUPPORTED;
-}
-
-HRESULT OSExchangeData::EnumDAdvise(IEnumSTATDATA** enumerator) {
-  return OLE_E_ADVISENOTSUPPORTED;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// OSExchangeData, IUnknown implementation:
-
-HRESULT OSExchangeData::QueryInterface(const IID& iid, void** object) {
-  *object = NULL;
-  if (IsEqualIID(iid, IID_IUnknown) || IsEqualIID(iid, IID_IDataObject)) {
-    *object = this;
-  } else {
-    return E_NOINTERFACE;
-  }
-  AddRef();
-  return S_OK;
-}
-
-ULONG OSExchangeData::AddRef() {
-  return InterlockedIncrement(&ref_count_);
-}
-
-ULONG OSExchangeData::Release() {
-  if (InterlockedDecrement(&ref_count_) == 0) {
-    ULONG copied_refcnt = ref_count_;
-    delete this;
-    return copied_refcnt;
-  }
-  return ref_count_;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// OSExchangeData, private:
-
-static STGMEDIUM* GetStorageForBytes(const char* data, size_t bytes) {
-  HANDLE handle = GlobalAlloc(GPTR, static_cast<int>(bytes));
-  ScopedHGlobal<char> scoped(handle);
-  size_t allocated = static_cast<size_t>(GlobalSize(handle));
-  memcpy(scoped.get(), data, allocated);
-
-  STGMEDIUM* storage = new STGMEDIUM;
-  storage->hGlobal = handle;
-  storage->tymed = TYMED_HGLOBAL;
-  storage->pUnkForRelease = NULL;
-  return storage;
-}
-
-template<class T>
-static HGLOBAL CopyStringToGlobalHandle(const T& payload) {
-  int bytes = static_cast<int>(payload.size() + 1) * sizeof(T::value_type);
-  HANDLE handle = GlobalAlloc(GPTR, bytes);
-  void* data = GlobalLock(handle);
-  size_t allocated = static_cast<size_t>(GlobalSize(handle));
-  memcpy(data, payload.c_str(), allocated);
-  static_cast<T::value_type*>(data)[payload.size()] = '\0';
-  GlobalUnlock(handle);
-  return handle;
-}
-
-static STGMEDIUM* GetStorageForWString(const std::wstring& data) {
-  STGMEDIUM* storage = new STGMEDIUM;
-  storage->hGlobal = CopyStringToGlobalHandle<std::wstring>(data);
-  storage->tymed = TYMED_HGLOBAL;
-  storage->pUnkForRelease = NULL;
-  return storage;
-}
-
-static STGMEDIUM* GetStorageForString(const std::string& data) {
-  STGMEDIUM* storage = new STGMEDIUM;
-  storage->hGlobal = CopyStringToGlobalHandle<std::string>(data);
-  storage->tymed = TYMED_HGLOBAL;
-  storage->pUnkForRelease = NULL;
-  return storage;
-}
-
-static void GetInternetShortcutFileContents(const GURL& url,
-                                            std::string* data) {
-  DCHECK(data);
-  static const std::string kInternetShortcutFileStart =
-      "[InternetShortcut]\r\nURL=";
-  static const std::string kInternetShortcutFileEnd =
-      "\r\n";
-  *data = kInternetShortcutFileStart + url.spec() + kInternetShortcutFileEnd;
-}
-
-static void CreateValidFileNameFromTitle(const GURL& url,
-                                         const std::wstring& title,
-                                         std::wstring* validated) {
-  if (title.empty()) {
-    if (url.is_valid()) {
-      *validated = net::GetSuggestedFilename(
-          url, std::string(), std::string(), std::wstring());
-    } else {
-      // Nothing else can be done, just use a default.
-      *validated = l10n_util::GetString(IDS_UNTITLED_SHORTCUT_FILE_NAME);
-    }
-  } else {
-    *validated = title;
-    file_util::ReplaceIllegalCharacters(validated, '-');
-  }
-  static const wchar_t extension[] = L".url";
-  static const size_t max_length = MAX_PATH - arraysize(extension);
-  if (validated->size() > max_length)
-    validated->erase(max_length);
-  *validated += extension;
-}
-
-static STGMEDIUM* GetStorageForFileDescriptor(
-    const std::wstring& valid_file_name) {
-  DCHECK(!valid_file_name.empty() && valid_file_name.size() + 1 <= MAX_PATH);
-  HANDLE handle = GlobalAlloc(GPTR, sizeof(FILEGROUPDESCRIPTOR));
-  FILEGROUPDESCRIPTOR* descriptor =
-      reinterpret_cast<FILEGROUPDESCRIPTOR*>(GlobalLock(handle));
-
-  descriptor->cItems = 1;
-  wcscpy_s(descriptor->fgd[0].cFileName,
-           valid_file_name.size() + 1,
-           valid_file_name.c_str());
-  descriptor->fgd[0].dwFlags = FD_LINKUI;
-
-  GlobalUnlock(handle);
-
-  STGMEDIUM* storage = new STGMEDIUM;
-  storage->hGlobal = handle;
-  storage->tymed = TYMED_HGLOBAL;
-  storage->pUnkForRelease = NULL;
-  return storage;
-}