Moving SwiftShader from component to bundled library

chrome/browser/component_updater/swiftshader_component_installer.cc

Index: chrome/browser/component_updater/swiftshader_component_installer.cc
diff --git a/chrome/browser/component_updater/swiftshader_component_installer.cc b/chrome/browser/component_updater/swiftshader_component_installer.cc
deleted file mode 100644
index 05cdadde2928ab7c110518afcfc10dd3cb49d841..0000000000000000000000000000000000000000
--- a/chrome/browser/component_updater/swiftshader_component_installer.cc
+++ /dev/null
@@ -1,283 +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 "chrome/browser/component_updater/swiftshader_component_installer.h"
-
-#include <stdint.h>
-#include <string>
-#include <vector>
-
-#include "base/base_paths.h"
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/files/file_enumerator.h"
-#include "base/files/file_path.h"
-#include "base/files/file_util.h"
-#include "base/logging.h"
-#include "base/path_service.h"
-#include "base/strings/string_util.h"
-#include "base/values.h"
-#include "build/build_config.h"
-#include "components/component_updater/component_updater_paths.h"
-#include "components/component_updater/component_updater_service.h"
-#include "components/update_client/update_client.h"
-#include "components/update_client/utils.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/gpu_data_manager.h"
-#include "content/public/browser/gpu_data_manager_observer.h"
-#include "gpu/config/gpu_feature_type.h"
-#include "ui/gl/gl_features.h"
-
-using content::BrowserThread;
-using content::GpuDataManager;
-
-namespace component_updater {
-
-namespace {
-
-// CRX hash. The extension id is: nhfgdggnnopgbfdlpeoalgcjdgfafocg.
-const uint8_t kSha2Hash[] = {0xd7, 0x56, 0x36, 0x6d, 0xde, 0xf6, 0x15, 0x3b,
-                             0xf4, 0xe0, 0xb6, 0x29, 0x36, 0x50, 0x5e, 0x26,
-                             0xbd, 0x77, 0x8b, 0x8e, 0x35, 0xc2, 0x7e, 0x43,
-                             0x52, 0x47, 0x62, 0xed, 0x12, 0xca, 0xcc, 0x6a};
-
-// File name of the internal SwiftShader plugin on different platforms.
-const base::FilePath::CharType kSwiftShaderEglName[] =
-    FILE_PATH_LITERAL("libegl.dll");
-const base::FilePath::CharType kSwiftShaderGlesName[] =
-    FILE_PATH_LITERAL("libglesv2.dll");
-
-const char kSwiftShaderManifestName[] = "SwiftShader";
-
-// If we don't have a SwiftShader component, this is the version we claim.
-const char kNullVersion[] = "0.0.0.0";
-
-// The base directory on windows looks like:
-// <profile>\AppData\Local\Google\Chrome\User Data\SwiftShader\.
-base::FilePath GetSwiftShaderBaseDirectory() {
-  base::FilePath result;
-  if (!PathService::Get(DIR_SWIFT_SHADER, &result))
-    NOTREACHED() << "Couldn't get SwiftShader directory.";
-  return result;
-}
-
-// SwiftShader has version encoded in the path itself
-// so we need to enumerate the directories to find the full path.
-// On success it returns something like:
-// <profile>\AppData\Local\Google\Chrome\User Data\SwiftShader\10.3.44.555\.
-bool GetLatestSwiftShaderDirectory(base::FilePath* result,
-                                   base::Version* latest,
-                                   std::vector<base::FilePath>* older_dirs) {
-  base::FilePath base_dir = GetSwiftShaderBaseDirectory();
-  bool found = false;
-  base::FileEnumerator file_enumerator(
-      base_dir, false, base::FileEnumerator::DIRECTORIES);
-  for (base::FilePath path = file_enumerator.Next(); !path.value().empty();
-       path = file_enumerator.Next()) {
-    base::Version version(path.BaseName().MaybeAsASCII());
-    if (!version.IsValid())
-      continue;
-    if (version.CompareTo(*latest) > 0 &&
-        base::PathExists(path.Append(kSwiftShaderEglName)) &&
-        base::PathExists(path.Append(kSwiftShaderGlesName))) {
-      if (found && older_dirs)
-        older_dirs->push_back(*result);
-      *latest = version;
-      *result = path;
-      found = true;
-    } else {
-      if (older_dirs)
-        older_dirs->push_back(path);
-    }
-  }
-  return found;
-}
-
-void RegisterSwiftShaderWithChrome(const base::FilePath& path) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  GpuDataManager::GetInstance()->RegisterSwiftShaderPath(path);
-}
-
-class SwiftShaderComponentInstaller : public update_client::CrxInstaller {
- public:
-  explicit SwiftShaderComponentInstaller(const base::Version& version);
-
-  // ComponentInstaller implementation:
-  void OnUpdateError(int error) override;
-
-  update_client::CrxInstaller::Result Install(
-      const base::DictionaryValue& manifest,
-      const base::FilePath& unpack_path) override;
-
-  bool GetInstalledFile(const std::string& file,
-                        base::FilePath* installed_file) override;
-
-  bool Uninstall() override;
-
- private:
-  ~SwiftShaderComponentInstaller() override {}
-
-  bool DoInstall(const base::DictionaryValue& manifest,
-                 const base::FilePath& unpack_path);
-
-  base::Version current_version_;
-};
-
-SwiftShaderComponentInstaller::SwiftShaderComponentInstaller(
-    const base::Version& version)
-    : current_version_(version) {
-  DCHECK(version.IsValid());
-}
-
-void SwiftShaderComponentInstaller::OnUpdateError(int error) {
-  NOTREACHED() << "SwiftShader update error: " << error;
-}
-
-update_client::CrxInstaller::Result SwiftShaderComponentInstaller::Install(
-    const base::DictionaryValue& manifest,
-    const base::FilePath& unpack_path) {
-  return update_client::InstallFunctionWrapper(base::Bind(
-      &SwiftShaderComponentInstaller::DoInstall, base::Unretained(this),
-      base::ConstRef(manifest), base::ConstRef(unpack_path)));
-}
-
-bool SwiftShaderComponentInstaller::DoInstall(
-    const base::DictionaryValue& manifest,
-    const base::FilePath& unpack_path) {
-  std::string name;
-  manifest.GetStringASCII("name", &name);
-  if (name != kSwiftShaderManifestName)
-    return false;
-  std::string proposed_version;
-  manifest.GetStringASCII("version", &proposed_version);
-  base::Version version(proposed_version.c_str());
-  if (!version.IsValid())
-    return false;
-  if (current_version_.CompareTo(version) >= 0)
-    return false;
-  if (!base::PathExists(unpack_path.Append(kSwiftShaderEglName)) ||
-      !base::PathExists(unpack_path.Append(kSwiftShaderGlesName)))
-    return false;
-  // Passed the basic tests. Time to install it.
-  base::FilePath path =
-      GetSwiftShaderBaseDirectory().AppendASCII(version.GetString());
-  if (base::PathExists(path))
-    return false;
-  if (!base::Move(unpack_path, path))
-    return false;
-  // Installation is done. Now tell the rest of chrome.
-  current_version_ = version;
-  BrowserThread::PostTask(BrowserThread::UI,
-                          FROM_HERE,
-                          base::Bind(&RegisterSwiftShaderWithChrome, path));
-  return true;
-}
-
-bool SwiftShaderComponentInstaller::GetInstalledFile(
-    const std::string& file,
-    base::FilePath* installed_file) {
-  return false;
-}
-
-bool SwiftShaderComponentInstaller::Uninstall() {
-  return false;
-}
-
-void FinishSwiftShaderUpdateRegistration(ComponentUpdateService* cus,
-                                         const base::Version& version) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-
-  update_client::CrxComponent swiftshader;
-  swiftshader.name = "Swift Shader";
-  swiftshader.installer = new SwiftShaderComponentInstaller(version);
-  swiftshader.version = version;
-  swiftshader.pk_hash.assign(kSha2Hash, &kSha2Hash[sizeof(kSha2Hash)]);
-  swiftshader.supports_group_policy_enable_component_updates = true;
-  swiftshader.requires_network_encryption = false;
-  if (!cus->RegisterComponent(swiftshader)) {
-    NOTREACHED() << "SwiftShader component registration fail";
-  }
-}
-
-class UpdateChecker : public content::GpuDataManagerObserver {
- public:
-  explicit UpdateChecker(ComponentUpdateService* cus);
-
-  void OnGpuInfoUpdate() override;
-
- private:
-  ComponentUpdateService* cus_;
-};
-
-UpdateChecker::UpdateChecker(ComponentUpdateService* cus) : cus_(cus) {
-}
-
-void UpdateChecker::OnGpuInfoUpdate() {
-  GpuDataManager* gpu_data_manager = GpuDataManager::GetInstance();
-
-  if (!gpu_data_manager->GpuAccessAllowed(NULL) ||
-      gpu_data_manager->IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_WEBGL) ||
-      gpu_data_manager->ShouldUseSwiftShader()) {
-    gpu_data_manager->RemoveObserver(this);
-    DCHECK_CURRENTLY_ON(BrowserThread::FILE);
-    base::FilePath path = GetSwiftShaderBaseDirectory();
-
-    base::Version version(kNullVersion);
-    GetLatestSwiftShaderDirectory(&path, &version, NULL);
-
-    BrowserThread::PostTask(
-        BrowserThread::UI,
-        FROM_HERE,
-        base::Bind(&FinishSwiftShaderUpdateRegistration, cus_, version));
-  }
-}
-
-#if BUILDFLAG(ENABLE_SWIFTSHADER) && defined(ARCH_CPU_X86)
-
-// Check if there already is a version of swiftshader installed,
-// and if so register it.
-void RegisterSwiftShaderPath(ComponentUpdateService* cus) {
-  DCHECK_CURRENTLY_ON(BrowserThread::FILE);
-  base::FilePath path = GetSwiftShaderBaseDirectory();
-  if (!base::PathExists(path)) {
-    if (!base::CreateDirectory(path)) {
-      NOTREACHED() << "Could not create SwiftShader directory.";
-      return;
-    }
-  }
-
-  base::Version version(kNullVersion);
-  std::vector<base::FilePath> older_dirs;
-  if (GetLatestSwiftShaderDirectory(&path, &version, &older_dirs))
-    BrowserThread::PostTask(BrowserThread::UI,
-                            FROM_HERE,
-                            base::Bind(&RegisterSwiftShaderWithChrome, path));
-
-  UpdateChecker* update_checker = new UpdateChecker(cus);
-  GpuDataManager::GetInstance()->AddObserver(update_checker);
-  update_checker->OnGpuInfoUpdate();
-  // We leak update_checker here, because it has to stick around for the life
-  // of the GpuDataManager.
-
-  // Remove older versions of SwiftShader.
-  for (std::vector<base::FilePath>::iterator iter = older_dirs.begin();
-       iter != older_dirs.end();
-       ++iter) {
-    base::DeleteFile(*iter, true);
-  }
-}
-
-#endif  // ENABLE_SWIFTSHADER
-
-}  // namespace
-
-void RegisterSwiftShaderComponent(ComponentUpdateService* cus) {
-#if BUILDFLAG(ENABLE_SWIFTSHADER) && defined(ARCH_CPU_X86)
-  BrowserThread::PostTask(BrowserThread::FILE,
-                          FROM_HERE,
-                          base::Bind(&RegisterSwiftShaderPath, cus));
-#endif
-}
-
-}  // namespace component_updater