Remove Gears from Chrome

chrome/common/chrome_plugin_lib.cc

Index: chrome/common/chrome_plugin_lib.cc
diff --git a/chrome/common/chrome_plugin_lib.cc b/chrome/common/chrome_plugin_lib.cc
deleted file mode 100644
index 7df1837fa8403885c3e0043fb4107a41efd1fed8..0000000000000000000000000000000000000000
--- a/chrome/common/chrome_plugin_lib.cc
+++ /dev/null
@@ -1,292 +0,0 @@
-// Copyright (c) 2011 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/common/chrome_plugin_lib.h"
-
-#include "base/command_line.h"
-#include "base/hash_tables.h"
-#include "base/message_loop.h"
-#include "base/metrics/histogram.h"
-#include "base/path_service.h"
-#include "base/perftimer.h"
-#include "base/string_util.h"
-#include "base/threading/platform_thread.h"
-#include "base/threading/thread.h"
-#include "chrome/common/chrome_counters.h"
-#include "chrome/common/chrome_paths.h"
-#include "chrome/common/chrome_switches.h"
-#include "content/common/notification_service.h"
-#include "webkit/plugins/npapi/plugin_list.h"
-
-#if defined(OS_WIN)
-#include "base/win/registry.h"
-#endif
-
-using base::TimeDelta;
-
-// TODO(port): revisit when plugins happier
-#if defined(OS_WIN)
-const wchar_t ChromePluginLib::kRegistryChromePlugins[] =
-    L"Software\\Google\\Chrome\\Plugins";
-static const wchar_t kRegistryLoadOnStartup[] = L"LoadOnStartup";
-static const wchar_t kRegistryPath[] = L"Path";
-#endif
-
-typedef base::hash_map<FilePath, scoped_refptr<ChromePluginLib> >
-    PluginMap;
-
-// A map of all the instantiated plugins.
-static PluginMap* g_loaded_libs;
-
-// The thread plugins are loaded and used in, lazily initialized upon
-// the first creation call.
-static base::PlatformThreadId g_plugin_thread_id = 0;
-static MessageLoop* g_plugin_thread_loop = NULL;
-
-static bool IsSingleProcessMode() {
-  // We don't support ChromePlugins in single-process mode.
-  return CommandLine::ForCurrentProcess()->HasSwitch(switches::kSingleProcess);
-}
-
-// static
-bool ChromePluginLib::IsInitialized() {
-  return (g_loaded_libs != NULL);
-}
-
-// static
-ChromePluginLib* ChromePluginLib::Create(const FilePath& filename,
-                                         const CPBrowserFuncs* bfuncs) {
-  // Keep a map of loaded plugins to ensure we only load each library once.
-  if (!g_loaded_libs) {
-    g_loaded_libs = new PluginMap();
-    g_plugin_thread_id = base::PlatformThread::CurrentId();
-    g_plugin_thread_loop = MessageLoop::current();
-  }
-  DCHECK(IsPluginThread());
-
-  PluginMap::const_iterator iter = g_loaded_libs->find(filename);
-  if (iter != g_loaded_libs->end())
-    return iter->second;
-
-  scoped_refptr<ChromePluginLib> plugin(new ChromePluginLib(filename));
-  if (!plugin->CP_Initialize(bfuncs))
-    return NULL;
-
-  (*g_loaded_libs)[filename] = plugin;
-  return plugin;
-}
-
-// static
-ChromePluginLib* ChromePluginLib::Find(const FilePath& filename) {
-  if (g_loaded_libs) {
-    PluginMap::const_iterator iter = g_loaded_libs->find(filename);
-    if (iter != g_loaded_libs->end())
-      return iter->second;
-  }
-  return NULL;
-}
-
-// static
-void ChromePluginLib::Destroy(const FilePath& filename) {
-  DCHECK(g_loaded_libs);
-  PluginMap::iterator iter = g_loaded_libs->find(filename);
-  if (iter != g_loaded_libs->end()) {
-    iter->second->Unload();
-    g_loaded_libs->erase(iter);
-  }
-}
-
-// static
-bool ChromePluginLib::IsPluginThread() {
-  return base::PlatformThread::CurrentId() == g_plugin_thread_id;
-}
-
-// static
-MessageLoop* ChromePluginLib::GetPluginThreadLoop() {
-  return g_plugin_thread_loop;
-}
-
-// static
-void ChromePluginLib::RegisterPluginsWithNPAPI() {
-  // We don't support ChromePlugins in single-process mode.
-  if (IsSingleProcessMode())
-    return;
-
-  FilePath path;
-  // Register Gears, if available.
-  if (PathService::Get(chrome::FILE_GEARS_PLUGIN, &path))
-    webkit::npapi::PluginList::Singleton()->AddExtraPluginPath(path);
-}
-
-static void LogPluginLoadTime(const TimeDelta &time) {
-  UMA_HISTOGRAM_TIMES("Gears.LoadTime", time);
-}
-
-// static
-void ChromePluginLib::LoadChromePlugins(const CPBrowserFuncs* bfuncs) {
-  static bool loaded = false;
-  if (loaded)
-    return;
-  loaded = true;
-
-  // We don't support ChromePlugins in single-process mode.
-  if (IsSingleProcessMode())
-    return;
-
-  FilePath path;
-  if (!PathService::Get(chrome::FILE_GEARS_PLUGIN, &path))
-    return;
-
-  PerfTimer timer;
-  ChromePluginLib::Create(path, bfuncs);
-  LogPluginLoadTime(timer.Elapsed());
-
-  // TODO(mpcomplete): disabled loading of plugins from the registry until we
-  // phase out registry keys from the gears installer.
-#if 0
-  for (RegistryKeyIterator iter(HKEY_CURRENT_USER, kRegistryChromePlugins);
-       iter.Valid(); ++iter) {
-    // Use the registry to gather plugin across the file system.
-    std::wstring reg_path = kRegistryChromePlugins;
-    reg_path.append(L"\\");
-    reg_path.append(iter.Name());
-    base::win::RegKey key(HKEY_CURRENT_USER, reg_path.c_str());
-
-    DWORD is_persistent = 0;
-    key.ReadValueDW(kRegistryLoadOnStartup, &is_persistent);
-    if (is_persistent) {
-      std::wstring path;
-      if (key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS) {
-        ChromePluginLib::Create(path, bfuncs);
-      }
-    }
-  }
-#endif
-}
-
-// static
-void ChromePluginLib::UnloadAllPlugins() {
-  if (g_loaded_libs) {
-    PluginMap::iterator it;
-    for (PluginMap::iterator it = g_loaded_libs->begin();
-         it != g_loaded_libs->end(); ++it) {
-      it->second->Unload();
-    }
-    delete g_loaded_libs;
-    g_loaded_libs = NULL;
-  }
-}
-
-const CPPluginFuncs& ChromePluginLib::functions() const {
-  DCHECK(initialized_);
-  DCHECK(IsPluginThread());
-  return plugin_funcs_;
-}
-
-ChromePluginLib::ChromePluginLib(const FilePath& filename)
-    : filename_(filename),
-#if defined(OS_WIN)
-      module_(0),
-#endif
-      initialized_(false),
-      CP_VersionNegotiate_(NULL),
-      CP_Initialize_(NULL),
-      CP_Test_(NULL) {
-  memset((void*)&plugin_funcs_, 0, sizeof(plugin_funcs_));
-}
-
-ChromePluginLib::~ChromePluginLib() {
-}
-
-bool ChromePluginLib::CP_Initialize(const CPBrowserFuncs* bfuncs) {
-  VLOG(1) << "ChromePluginLib::CP_Initialize(" << filename_.value()
-          << "): initialized=" << initialized_;
-  if (initialized_)
-    return true;
-
-  if (!Load())
-    return false;
-
-  if (CP_VersionNegotiate_) {
-    uint16 selected_version = 0;
-    CPError rv = CP_VersionNegotiate_(CP_VERSION, CP_VERSION,
-                                      &selected_version);
-    if ((rv != CPERR_SUCCESS) || (selected_version != CP_VERSION))
-      return false;
-  }
-
-  plugin_funcs_.size = sizeof(plugin_funcs_);
-  CPError rv = CP_Initialize_(cpid(), bfuncs, &plugin_funcs_);
-  initialized_ = (rv == CPERR_SUCCESS) &&
-      (CP_GET_MAJOR_VERSION(plugin_funcs_.version) == CP_MAJOR_VERSION) &&
-      (CP_GET_MINOR_VERSION(plugin_funcs_.version) <= CP_MINOR_VERSION);
-  VLOG(1) << "ChromePluginLib::CP_Initialize(" << filename_.value()
-          << "): initialized=" << initialized_ << "): result=" << rv;
-
-  return initialized_;
-}
-
-void ChromePluginLib::CP_Shutdown() {
-  DCHECK(initialized_);
-  functions().shutdown();
-  initialized_ = false;
-  memset((void*)&plugin_funcs_, 0, sizeof(plugin_funcs_));
-}
-
-int ChromePluginLib::CP_Test(void* param) {
-  DCHECK(initialized_);
-  if (!CP_Test_)
-    return -1;
-  return CP_Test_(param);
-}
-
-bool ChromePluginLib::Load() {
-#if !defined(OS_WIN)
-  // Mac and Linux won't implement Gears.
-  return false;
-#else
-  DCHECK(module_ == 0);
-
-  module_ = LoadLibrary(filename_.value().c_str());
-  if (module_ == 0)
-    return false;
-
-  // required initialization function
-  CP_Initialize_ = reinterpret_cast<CP_InitializeFunc>
-      (GetProcAddress(module_, "CP_Initialize"));
-
-  if (!CP_Initialize_) {
-    FreeLibrary(module_);
-    module_ = 0;
-    return false;
-  }
-
-  // optional version negotiation function
-  CP_VersionNegotiate_ = reinterpret_cast<CP_VersionNegotiateFunc>
-      (GetProcAddress(module_, "CP_VersionNegotiate"));
-
-  // optional test function
-  CP_Test_ = reinterpret_cast<CP_TestFunc>
-      (GetProcAddress(module_, "CP_Test"));
-
-  return true;
-#endif
-}
-
-void ChromePluginLib::Unload() {
-  NotificationService::current()->Notify(
-      NotificationType::CHROME_PLUGIN_UNLOADED,
-      Source<ChromePluginLib>(this),
-      NotificationService::NoDetails());
-
-  if (initialized_)
-    CP_Shutdown();
-
-#if defined(OS_WIN)
-  if (module_) {
-    FreeLibrary(module_);
-    module_ = 0;
-  }
-#endif
-}