Linux: preload ffmpeg in the zygote.

chrome/browser/zygote_main_linux.cc

 // Copyright (c) 2009 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 <unistd.h>
 #include <sys/epoll.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/signal.h>
 #include <sys/prctl.h>
 #include <sys/wait.h>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/eintr_wrapper.h"
 #include "base/global_descriptors_posix.h"
+#include "base/path_service.h"
 #include "base/pickle.h"
 #include "base/rand_util.h"
 #include "base/unix_domain_socket_posix.h"
 
 #include "chrome/browser/zygote_host_linux.h"
 #include "chrome/common/chrome_descriptors.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/main_function_params.h"
 #include "chrome/common/process_watcher.h"
 #include "chrome/common/sandbox_methods_linux.h"
 
+#include "media/base/media.h"
+
 #include "skia/ext/SkFontHost_fontconfig_control.h"
 
 // http://code.google.com/p/chromium/wiki/LinuxZygote
 
 static const int kMagicSandboxIPCDescriptor = 5;
 
 // This is the object which implements the zygote. The ZygoteMain function,
 // which is called from ChromeMain, at the the bottom and simple constructs one
 // of these objects and runs it.
 class Zygote {
@@ skipping 278 matching lines @@
     // WebCore String out of the renderer and using string16 in place of
     // FilePath for IPC.
     const char* locale = setlocale(LC_ALL, "");
     LOG_IF(WARNING, locale == NULL) << "setlocale failed.";
 
 #if defined(ARCH_CPU_X86)
     PATCH_GLOBAL_OFFSET_TABLE(localtime, sandbox_wrapper::localtime);
     PATCH_GLOBAL_OFFSET_TABLE(localtime_r, sandbox_wrapper::localtime_r);
 #endif
 
+    FilePath module_path;
+    if (PathService::Get(base::DIR_MODULE, &module_path))
+      media::InitializeMediaLibrary(module_path);
+
     static const char kChrootMe = 'C';
     static const char kChrootMeSuccess = 'O';
 
     if (HANDLE_EINTR(write(fd, &kChrootMe, 1)) != 1) {
       LOG(ERROR) << "Failed to write to chroot pipe: " << errno;
       return false;
     }
 
     // We need to reap the chroot helper process in any event:
     wait(NULL);
@@ skipping 46 matching lines @@
 bool ZygoteMain(const MainFunctionParams& params) {
   if (!MaybeEnterChroot()) {
     LOG(FATAL) << "Failed to enter sandbox. Fail safe abort. (errno: "
                << errno << ")";
     return false;
   }
 
   Zygote zygote;
   return zygote.ProcessRequests();
 }