Revert of Sandbox html_viewer on Linux.

components/font_service/public/cpp/font_service_thread.cc

-// Copyright 2015 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 "components/font_service/public/cpp/font_service_thread.h"
-
-#include "base/bind.h"
-#include "base/files/file.h"
-#include "base/synchronization/waitable_event.h"
-#include "components/font_service/public/cpp/mapped_font_file.h"
-#include "mojo/common/message_pump_mojo.h"
-#include "mojo/platform_handle/platform_handle_functions.h"
-
-namespace font_service {
-namespace internal {
-
-namespace {
-const char kFontThreadName[] = "Font_Proxy_Thread";
-}  // namespace
-
-FontServiceThread::FontServiceThread(FontServicePtr font_service)
-    : base::Thread(kFontThreadName),
-      font_service_info_(font_service.PassInterface().Pass()) {
-  base::Thread::Options options;
-  options.message_pump_factory =
-      base::Bind(&mojo::common::MessagePumpMojo::Create);
-  StartWithOptions(options);
-}
-
-bool FontServiceThread::MatchFamilyName(
-    const char family_name[],
-    SkTypeface::Style requested_style,
-    SkFontConfigInterface::FontIdentity* out_font_identity,
-    SkString* out_family_name,
-    SkTypeface::Style* out_style) {
-  DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId());
-
-  bool out_valid = false;
-  // This proxies to the other thread, which proxies to mojo. Only on the reply
-  // from mojo do we return from this.
-  base::WaitableEvent done_event(false, false);
-  task_runner()->PostTask(
-      FROM_HERE,
-      base::Bind(&FontServiceThread::MatchFamilyNameImpl, this, &done_event,
-                 family_name, requested_style, &out_valid, out_font_identity,
-                 out_family_name, out_style));
-  done_event.Wait();
-
-  return out_valid;
-}
-
-scoped_refptr<MappedFontFile> FontServiceThread::OpenStream(
-    const SkFontConfigInterface::FontIdentity& identity) {
-  DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId());
-
-  base::File stream_file;
-  // This proxies to the other thread, which proxies to mojo. Only on the reply
-  // from mojo do we return from this.
-  base::WaitableEvent done_event(false, false);
-  task_runner()->PostTask(FROM_HERE,
-                          base::Bind(&FontServiceThread::OpenStreamImpl, this,
-                                     &done_event, &stream_file, identity.fID));
-  done_event.Wait();
-
-  if (!stream_file.IsValid()) {
-    NOTREACHED();
-    return nullptr;
-  }
-
-  // Converts the file to out internal type.
-  scoped_refptr<MappedFontFile> mapped_font_file =
-      new MappedFontFile(identity.fID);
-  if (!mapped_font_file->Initialize(stream_file.Pass()))
-    return nullptr;
-
-  return mapped_font_file;
-}
-
-FontServiceThread::~FontServiceThread() {
-  Stop();
-}
-
-void FontServiceThread::MatchFamilyNameImpl(
-    base::WaitableEvent* done_event,
-    const char family_name[],
-    SkTypeface::Style requested_style,
-    bool* out_valid,
-    SkFontConfigInterface::FontIdentity* out_font_identity,
-    SkString* out_family_name,
-    SkTypeface::Style* out_style) {
-  DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId());
-
-  font_service_->MatchFamilyName(
-      mojo::String(family_name), static_cast<TypefaceStyle>(requested_style),
-      base::Bind(&FontServiceThread::OnMatchFamilyNameComplete, this,
-                 done_event, out_valid, out_font_identity, out_family_name,
-                 out_style));
-}
-
-void FontServiceThread::OnMatchFamilyNameComplete(
-    base::WaitableEvent* done_event,
-    bool* out_valid,
-    SkFontConfigInterface::FontIdentity* out_font_identity,
-    SkString* out_family_name,
-    SkTypeface::Style* out_style,
-    FontIdentityPtr font_identity,
-    mojo::String family_name,
-    TypefaceStyle style) {
-  DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId());
-
-  *out_valid = font_identity;
-  if (font_identity) {
-    out_font_identity->fID = font_identity->id;
-    out_font_identity->fTTCIndex = font_identity->ttc_index;
-    out_font_identity->fString = font_identity->str_representation.data();
-    // TODO(erg): fStyle isn't set. This is rather odd, however it matches the
-    // behaviour of the current Linux IPC version.
-
-    *out_family_name = family_name.data();
-    *out_style = static_cast<SkTypeface::Style>(style);
-  }
-
-  done_event->Signal();
-}
-
-void FontServiceThread::OpenStreamImpl(base::WaitableEvent* done_event,
-                                       base::File* output_file,
-                                       const uint32_t id_number) {
-  DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId());
-
-  font_service_->OpenStream(
-      id_number, base::Bind(&FontServiceThread::OnOpenStreamComplete, this,
-                            done_event, output_file));
-}
-
-void FontServiceThread::OnOpenStreamComplete(base::WaitableEvent* done_event,
-                                             base::File* output_file,
-                                             mojo::ScopedHandle handle) {
-  if (handle.is_valid()) {
-    MojoPlatformHandle platform_handle;
-    CHECK(MojoExtractPlatformHandle(handle.release().value(),
-                                    &platform_handle) == MOJO_RESULT_OK);
-    *output_file = base::File(platform_handle).Pass();
-  }
-
-  done_event->Signal();
-}
-
-void FontServiceThread::Init() {
-  font_service_.Bind(font_service_info_.Pass());
-}
-
-void FontServiceThread::CleanUp() {
-  font_service_.reset();
-}
-
-}  // namespace internal
-}  // namespace font_service