Turn components/crash into a layered component.

components/crash/app/breakpad_win.cc

Index: components/crash/app/breakpad_win.cc
diff --git a/components/crash/app/breakpad_win.cc b/components/crash/app/breakpad_win.cc
deleted file mode 100644
index 05a29ae8b7400aac30cfea3e5583c39f84d4f58b..0000000000000000000000000000000000000000
--- a/components/crash/app/breakpad_win.cc
+++ /dev/null
@@ -1,745 +0,0 @@
-// Copyright 2013 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/crash/app/breakpad_win.h"
-
-#include <windows.h>
-#include <shellapi.h>
-#include <tchar.h>
-#include <userenv.h>
-#include <winnt.h>
-
-#include <algorithm>
-#include <map>
-#include <vector>
-
-#include "base/base_switches.h"
-#include "base/basictypes.h"
-#include "base/command_line.h"
-#include "base/debug/crash_logging.h"
-#include "base/debug/dump_without_crashing.h"
-#include "base/environment.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/numerics/safe_conversions.h"
-#include "base/strings/string16.h"
-#include "base/strings/string_split.h"
-#include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/synchronization/lock.h"
-#include "base/win/metro.h"
-#include "base/win/pe_image.h"
-#include "base/win/registry.h"
-#include "base/win/win_util.h"
-#include "breakpad/src/client/windows/handler/exception_handler.h"
-#include "components/crash/app/crash_keys_win.h"
-#include "components/crash/app/crash_reporter_client.h"
-#include "components/crash/app/hard_error_handler_win.h"
-#include "content/public/common/result_codes.h"
-#include "sandbox/win/src/nt_internals.h"
-#include "sandbox/win/src/sidestep/preamble_patcher.h"
-
-// userenv.dll is required for GetProfileType().
-#pragma comment(lib, "userenv.lib")
-
-#pragma intrinsic(_AddressOfReturnAddress)
-#pragma intrinsic(_ReturnAddress)
-
-#ifdef _WIN64
-// See http://msdn.microsoft.com/en-us/library/ddssxxy8.aspx
-typedef struct _UNWIND_INFO {
-  unsigned char Version : 3;
-  unsigned char Flags : 5;
-  unsigned char SizeOfProlog;
-  unsigned char CountOfCodes;
-  unsigned char FrameRegister : 4;
-  unsigned char FrameOffset : 4;
-  ULONG ExceptionHandler;
-} UNWIND_INFO, *PUNWIND_INFO;
-#endif
-
-namespace breakpad {
-
-using crash_reporter::GetCrashReporterClient;
-
-namespace {
-
-// Minidump with stacks, PEB, TEB, and unloaded module list.
-const MINIDUMP_TYPE kSmallDumpType = static_cast<MINIDUMP_TYPE>(
-    MiniDumpWithProcessThreadData |  // Get PEB and TEB.
-    MiniDumpWithUnloadedModules);  // Get unloaded modules when available.
-
-// Minidump with all of the above, plus memory referenced from stack.
-const MINIDUMP_TYPE kLargerDumpType = static_cast<MINIDUMP_TYPE>(
-    MiniDumpWithProcessThreadData |  // Get PEB and TEB.
-    MiniDumpWithUnloadedModules |  // Get unloaded modules when available.
-    MiniDumpWithIndirectlyReferencedMemory);  // Get memory referenced by stack.
-
-// Large dump with all process memory.
-const MINIDUMP_TYPE kFullDumpType = static_cast<MINIDUMP_TYPE>(
-    MiniDumpWithFullMemory |  // Full memory from process.
-    MiniDumpWithProcessThreadData |  // Get PEB and TEB.
-    MiniDumpWithHandleData |  // Get all handle information.
-    MiniDumpWithUnloadedModules);  // Get unloaded modules when available.
-
-const char kPipeNameVar[] = "CHROME_BREAKPAD_PIPE_NAME";
-
-const wchar_t kGoogleUpdatePipeName[] = L"\\\\.\\pipe\\GoogleCrashServices\\";
-const wchar_t kChromePipeName[] = L"\\\\.\\pipe\\ChromeCrashServices";
-
-// This is the well known SID for the system principal.
-const wchar_t kSystemPrincipalSid[] =L"S-1-5-18";
-
-google_breakpad::ExceptionHandler* g_breakpad = NULL;
-google_breakpad::ExceptionHandler* g_dumphandler_no_crash = NULL;
-
-#if !defined(_WIN64)
-EXCEPTION_POINTERS g_surrogate_exception_pointers = {0};
-EXCEPTION_RECORD g_surrogate_exception_record = {0};
-CONTEXT g_surrogate_context = {0};
-#endif  // !defined(_WIN64)
-
-typedef NTSTATUS (WINAPI* NtTerminateProcessPtr)(HANDLE ProcessHandle,
-                                                 NTSTATUS ExitStatus);
-char* g_real_terminate_process_stub = NULL;
-
-}  // namespace
-
-// Dumps the current process memory.
-extern "C" void __declspec(dllexport) __cdecl DumpProcess() {
-  if (g_breakpad) {
-    g_breakpad->WriteMinidump();
-  }
-}
-
-// Used for dumping a process state when there is no crash.
-extern "C" void __declspec(dllexport) __cdecl DumpProcessWithoutCrash() {
-  if (g_dumphandler_no_crash) {
-    g_dumphandler_no_crash->WriteMinidump();
-  }
-}
-
-namespace {
-
-// We need to prevent ICF from folding DumpForHangDebuggingThread() and
-// DumpProcessWithoutCrashThread() together, since that makes them
-// indistinguishable in crash dumps. We do this by making the function
-// bodies unique, and prevent optimization from shuffling things around.
-MSVC_DISABLE_OPTIMIZE()
-MSVC_PUSH_DISABLE_WARNING(4748)
-
-DWORD WINAPI DumpProcessWithoutCrashThread(void*) {
-  DumpProcessWithoutCrash();
-  return 0;
-}
-
-// The following two functions do exactly the same thing as the two above. But
-// we want the signatures to be different so that we can easily track them in
-// crash reports.
-// TODO(yzshen): Remove when enough information is collected and the hang rate
-// of pepper/renderer processes is reduced.
-DWORD WINAPI DumpForHangDebuggingThread(void*) {
-  DumpProcessWithoutCrash();
-  VLOG(1) << "dumped for hang debugging";
-  return 0;
-}
-
-MSVC_POP_WARNING()
-MSVC_ENABLE_OPTIMIZE()
-
-}  // namespace
-
-// Injects a thread into a remote process to dump state when there is no crash.
-extern "C" HANDLE __declspec(dllexport) __cdecl
-InjectDumpProcessWithoutCrash(HANDLE process) {
-  return CreateRemoteThread(process, NULL, 0, DumpProcessWithoutCrashThread,
-                            0, 0, NULL);
-}
-
-extern "C" HANDLE __declspec(dllexport) __cdecl
-InjectDumpForHangDebugging(HANDLE process) {
-  return CreateRemoteThread(process, NULL, 0, DumpForHangDebuggingThread,
-                            0, 0, NULL);
-}
-
-// Returns a string containing a list of all modifiers for the loaded profile.
-std::wstring GetProfileType() {
-  std::wstring profile_type;
-  DWORD profile_bits = 0;
-  if (::GetProfileType(&profile_bits)) {
-    static const struct {
-      DWORD bit;
-      const wchar_t* name;
-    } kBitNames[] = {
-      { PT_MANDATORY, L"mandatory" },
-      { PT_ROAMING, L"roaming" },
-      { PT_TEMPORARY, L"temporary" },
-    };
-    for (size_t i = 0; i < arraysize(kBitNames); ++i) {
-      const DWORD this_bit = kBitNames[i].bit;
-      if ((profile_bits & this_bit) != 0) {
-        profile_type.append(kBitNames[i].name);
-        profile_bits &= ~this_bit;
-        if (profile_bits != 0)
-          profile_type.append(L", ");
-      }
-    }
-  } else {
-    DWORD last_error = ::GetLastError();
-    base::SStringPrintf(&profile_type, L"error %u", last_error);
-  }
-  return profile_type;
-}
-
-namespace {
-
-// This callback is used when we want to get a dump without crashing the
-// process.
-bool DumpDoneCallbackWhenNoCrash(const wchar_t*, const wchar_t*, void*,
-                                 EXCEPTION_POINTERS* ex_info,
-                                 MDRawAssertionInfo*, bool succeeded) {
-  GetCrashReporterClient()->RecordCrashDumpAttemptResult(
-      false /* is_real_crash */, succeeded);
-  return true;
-}
-
-// This callback is executed when the browser process has crashed, after
-// the crash dump has been created. We need to minimize the amount of work
-// done here since we have potentially corrupted process. Our job is to
-// spawn another instance of chrome which will show a 'chrome has crashed'
-// dialog. This code needs to live in the exe and thus has no access to
-// facilities such as the i18n helpers.
-bool DumpDoneCallback(const wchar_t*, const wchar_t*, void*,
-                      EXCEPTION_POINTERS* ex_info,
-                      MDRawAssertionInfo*, bool succeeded) {
-  GetCrashReporterClient()->RecordCrashDumpAttemptResult(
-      true /* is_real_crash */, succeeded);
-  // Check if the exception is one of the kind which would not be solved
-  // by simply restarting chrome. In this case we show a message box with
-  // and exit silently. Remember that chrome is in a crashed state so we
-  // can't show our own UI from this process.
-  if (HardErrorHandler(ex_info))
-    return true;
-
-  if (!GetCrashReporterClient()->AboutToRestart())
-    return true;
-
-  // Now we just start chrome browser with the same command line.
-  STARTUPINFOW si = {sizeof(si)};
-  PROCESS_INFORMATION pi;
-  if (::CreateProcessW(NULL, ::GetCommandLineW(), NULL, NULL, FALSE,
-                       CREATE_UNICODE_ENVIRONMENT, NULL, NULL, &si, &pi)) {
-    ::CloseHandle(pi.hProcess);
-    ::CloseHandle(pi.hThread);
-  }
-  // After this return we will be terminated. The actual return value is
-  // not used at all.
-  return true;
-}
-
-// flag to indicate that we are already handling an exception.
-volatile LONG handling_exception = 0;
-
-// This callback is used when there is no crash. Note: Unlike the
-// |FilterCallback| below this does not do dupe detection. It is upto the caller
-// to implement it.
-bool FilterCallbackWhenNoCrash(
-    void*, EXCEPTION_POINTERS*, MDRawAssertionInfo*) {
-  GetCrashReporterClient()->RecordCrashDumpAttempt(false);
-  return true;
-}
-
-// This callback is executed when the Chrome process has crashed and *before*
-// the crash dump is created. To prevent duplicate crash reports we
-// make every thread calling this method, except the very first one,
-// go to sleep.
-bool FilterCallback(void*, EXCEPTION_POINTERS*, MDRawAssertionInfo*) {
-  // Capture every thread except the first one in the sleep. We don't
-  // want multiple threads to concurrently report exceptions.
-  if (::InterlockedCompareExchange(&handling_exception, 1, 0) == 1) {
-    ::Sleep(INFINITE);
-  }
-  GetCrashReporterClient()->RecordCrashDumpAttempt(true);
-  return true;
-}
-
-// Previous unhandled filter. Will be called if not null when we
-// intercept a crash.
-LPTOP_LEVEL_EXCEPTION_FILTER previous_filter = NULL;
-
-// Exception filter used when breakpad is not enabled. We just display
-// the "Do you want to restart" message and then we call the previous filter.
-long WINAPI ChromeExceptionFilter(EXCEPTION_POINTERS* info) {
-  DumpDoneCallback(NULL, NULL, NULL, info, NULL, false);
-
-  if (previous_filter)
-    return previous_filter(info);
-
-  return EXCEPTION_EXECUTE_HANDLER;
-}
-
-// Exception filter for the service process used when breakpad is not enabled.
-// We just display the "Do you want to restart" message and then die
-// (without calling the previous filter).
-long WINAPI ServiceExceptionFilter(EXCEPTION_POINTERS* info) {
-  DumpDoneCallback(NULL, NULL, NULL, info, NULL, false);
-  return EXCEPTION_EXECUTE_HANDLER;
-}
-
-#if !defined(COMPONENT_BUILD)
-// Installed via base::debug::SetCrashKeyReportingFunctions.
-void SetCrashKeyValueForBaseDebug(const base::StringPiece& key,
-                                  const base::StringPiece& value) {
-  DCHECK(CrashKeysWin::keeper());
-  CrashKeysWin::keeper()->SetCrashKeyValue(base::UTF8ToUTF16(key),
-                                           base::UTF8ToUTF16(value));
-}
-
-// Installed via base::debug::SetCrashKeyReportingFunctions.
-void ClearCrashKeyForBaseDebug(const base::StringPiece& key) {
-  DCHECK(CrashKeysWin::keeper());
-  CrashKeysWin::keeper()->ClearCrashKeyValue(base::UTF8ToUTF16(key));
-}
-#endif  // !defined(COMPONENT_BUILD)
-
-}  // namespace
-
-// NOTE: This function is used by SyzyASAN to annotate crash reports. If you
-// change the name or signature of this function you will break SyzyASAN
-// instrumented releases of Chrome. Please contact syzygy-team@chromium.org
-// before doing so!
-extern "C" void __declspec(dllexport) __cdecl SetCrashKeyValueImpl(
-    const wchar_t* key, const wchar_t* value) {
-  CrashKeysWin* keeper = CrashKeysWin::keeper();
-  if (!keeper)
-    return;
-
-  // TODO(siggi): This doesn't look quite right - there's NULL deref potential
-  //    here, and an implicit std::wstring conversion. Fixme.
-  keeper->SetCrashKeyValue(key, value);
-}
-
-extern "C" void __declspec(dllexport) __cdecl ClearCrashKeyValueImpl(
-    const wchar_t* key) {
-  CrashKeysWin* keeper = CrashKeysWin::keeper();
-  if (!keeper)
-    return;
-
-  // TODO(siggi): This doesn't look quite right - there's NULL deref potential
-  //    here, and an implicit std::wstring conversion. Fixme.
-  keeper->ClearCrashKeyValue(key);
-}
-
-static bool WrapMessageBoxWithSEH(const wchar_t* text, const wchar_t* caption,
-                                  UINT flags, bool* exit_now) {
-  // We wrap the call to MessageBoxW with a SEH handler because it some
-  // machines with CursorXP, PeaDict or with FontExplorer installed it crashes
-  // uncontrollably here. Being this a best effort deal we better go away.
-  __try {
-    *exit_now = (IDOK != ::MessageBoxW(NULL, text, caption, flags));
-  } __except(EXCEPTION_EXECUTE_HANDLER) {
-    // Its not safe to continue executing, exit silently here.
-    ::TerminateProcess(::GetCurrentProcess(),
-                       GetCrashReporterClient()->GetResultCodeRespawnFailed());
-  }
-
-  return true;
-}
-
-// This function is executed by the child process that DumpDoneCallback()
-// spawned and basically just shows the 'chrome has crashed' dialog if
-// the CHROME_CRASHED environment variable is present.
-bool ShowRestartDialogIfCrashed(bool* exit_now) {
-  // If we are being launched in metro mode don't try to show the dialog.
-  if (base::win::IsMetroProcess())
-    return false;
-
-  base::string16 message;
-  base::string16 title;
-  bool is_rtl_locale;
-  if (!GetCrashReporterClient()->ShouldShowRestartDialog(
-          &title, &message, &is_rtl_locale)) {
-    return false;
-  }
-
-  // If the UI layout is right-to-left, we need to pass the appropriate MB_XXX
-  // flags so that an RTL message box is displayed.
-  UINT flags = MB_OKCANCEL | MB_ICONWARNING;
-  if (is_rtl_locale)
-    flags |= MB_RIGHT | MB_RTLREADING;
-
-  return WrapMessageBoxWithSEH(message.c_str(), title.c_str(), flags, exit_now);
-}
-
-extern "C" void __declspec(dllexport) TerminateProcessWithoutDump() {
-  // Patched stub exists based on conditions (See InitCrashReporter).
-  // As a side note this function also gets called from
-  // WindowProcExceptionFilter.
-  if (g_real_terminate_process_stub == NULL) {
-    ::TerminateProcess(::GetCurrentProcess(), content::RESULT_CODE_KILLED);
-  } else {
-    NtTerminateProcessPtr real_terminate_proc =
-        reinterpret_cast<NtTerminateProcessPtr>(
-            static_cast<char*>(g_real_terminate_process_stub));
-    real_terminate_proc(::GetCurrentProcess(), content::RESULT_CODE_KILLED);
-  }
-}
-
-// Crashes the process after generating a dump for the provided exception. Note
-// that the crash reporter should be initialized before calling this function
-// for it to do anything.
-// NOTE: This function is used by SyzyASAN to invoke a crash. If you change the
-// the name or signature of this function you will break SyzyASAN instrumented
-// releases of Chrome. Please contact syzygy-team@chromium.org before doing so!
-extern "C" int __declspec(dllexport) CrashForException(
-    EXCEPTION_POINTERS* info) {
-  if (g_breakpad) {
-    g_breakpad->WriteMinidumpForException(info);
-    TerminateProcessWithoutDump();
-  }
-  return EXCEPTION_CONTINUE_SEARCH;
-}
-
-#ifndef _WIN64
-static NTSTATUS WINAPI HookNtTerminateProcess(HANDLE ProcessHandle,
-                                              NTSTATUS ExitStatus) {
-  if (g_breakpad &&
-      (ProcessHandle == ::GetCurrentProcess() || ProcessHandle == NULL)) {
-    NT_TIB* tib = reinterpret_cast<NT_TIB*>(NtCurrentTeb());
-    void* address_on_stack = _AddressOfReturnAddress();
-    if (address_on_stack < tib->StackLimit ||
-        address_on_stack > tib->StackBase) {
-      g_surrogate_exception_record.ExceptionAddress = _ReturnAddress();
-      g_surrogate_exception_record.ExceptionCode = DBG_TERMINATE_PROCESS;
-      g_surrogate_exception_record.ExceptionFlags = EXCEPTION_NONCONTINUABLE;
-      CrashForException(&g_surrogate_exception_pointers);
-    }
-  }
-
-  NtTerminateProcessPtr real_proc =
-      reinterpret_cast<NtTerminateProcessPtr>(
-          static_cast<char*>(g_real_terminate_process_stub));
-  return real_proc(ProcessHandle, ExitStatus);
-}
-
-static void InitTerminateProcessHooks() {
-  NtTerminateProcessPtr terminate_process_func_address =
-      reinterpret_cast<NtTerminateProcessPtr>(::GetProcAddress(
-          ::GetModuleHandle(L"ntdll.dll"), "NtTerminateProcess"));
-  if (terminate_process_func_address == NULL)
-    return;
-
-  DWORD old_protect = 0;
-  if (!::VirtualProtect(terminate_process_func_address, 5,
-                        PAGE_EXECUTE_READWRITE, &old_protect))
-    return;
-
-  g_real_terminate_process_stub = reinterpret_cast<char*>(VirtualAllocEx(
-      ::GetCurrentProcess(), NULL, sidestep::kMaxPreambleStubSize,
-      MEM_COMMIT, PAGE_EXECUTE_READWRITE));
-  if (g_real_terminate_process_stub == NULL)
-    return;
-
-  g_surrogate_exception_pointers.ContextRecord = &g_surrogate_context;
-  g_surrogate_exception_pointers.ExceptionRecord =
-      &g_surrogate_exception_record;
-
-  sidestep::SideStepError patch_result =
-      sidestep::PreamblePatcher::Patch(
-          terminate_process_func_address, HookNtTerminateProcess,
-          g_real_terminate_process_stub, sidestep::kMaxPreambleStubSize);
-  if (patch_result != sidestep::SIDESTEP_SUCCESS) {
-    CHECK(::VirtualFreeEx(::GetCurrentProcess(), g_real_terminate_process_stub,
-                    0, MEM_RELEASE));
-    CHECK(::VirtualProtect(terminate_process_func_address, 5, old_protect,
-                           &old_protect));
-    return;
-  }
-
-  DWORD dummy = 0;
-  CHECK(::VirtualProtect(terminate_process_func_address,
-                         5,
-                         old_protect,
-                         &dummy));
-  CHECK(::VirtualProtect(g_real_terminate_process_stub,
-                         sidestep::kMaxPreambleStubSize,
-                         old_protect,
-                         &old_protect));
-}
-#endif
-
-static void InitPipeNameEnvVar(bool is_per_user_install) {
-  scoped_ptr<base::Environment> env(base::Environment::Create());
-  if (env->HasVar(kPipeNameVar)) {
-    // The Breakpad pipe name is already configured: nothing to do.
-    return;
-  }
-
-  // Check whether configuration management controls crash reporting.
-  bool crash_reporting_enabled = true;
-  bool controlled_by_policy =
-      GetCrashReporterClient()->ReportingIsEnforcedByPolicy(
-          &crash_reporting_enabled);
-
-  const base::CommandLine& command = *base::CommandLine::ForCurrentProcess();
-  bool use_crash_service = !controlled_by_policy &&
-                           (command.HasSwitch(switches::kNoErrorDialogs) ||
-                            GetCrashReporterClient()->IsRunningUnattended());
-
-  std::wstring pipe_name;
-  if (use_crash_service) {
-    // Crash reporting is done by crash_service.exe.
-    pipe_name = kChromePipeName;
-  } else {
-    // We want to use the Google Update crash reporting. We need to check if the
-    // user allows it first (in case the administrator didn't already decide
-    // via policy).
-    if (!controlled_by_policy)
-      crash_reporting_enabled =
-          GetCrashReporterClient()->GetCollectStatsConsent();
-
-    if (!crash_reporting_enabled) {
-      // Crash reporting is disabled, don't set the environment variable.
-      return;
-    }
-
-    // Build the pipe name. It can be either:
-    // System-wide install: "NamedPipe\GoogleCrashServices\S-1-5-18"
-    // Per-user install: "NamedPipe\GoogleCrashServices\<user SID>"
-    std::wstring user_sid;
-    if (is_per_user_install) {
-      if (!base::win::GetUserSidString(&user_sid)) {
-        return;
-      }
-    } else {
-      user_sid = kSystemPrincipalSid;
-    }
-
-    pipe_name = kGoogleUpdatePipeName;
-    pipe_name += user_sid;
-  }
-  env->SetVar(kPipeNameVar, base::UTF16ToASCII(pipe_name));
-}
-
-void InitDefaultCrashCallback(LPTOP_LEVEL_EXCEPTION_FILTER filter) {
-  previous_filter = SetUnhandledExceptionFilter(filter);
-}
-
-void InitCrashReporter(const std::string& process_type_switch) {
-  const base::CommandLine& command = *base::CommandLine::ForCurrentProcess();
-  if (command.HasSwitch(switches::kDisableBreakpad))
-    return;
-
-  // Disable the message box for assertions.
-  _CrtSetReportMode(_CRT_ASSERT, 0);
-
-  base::string16 process_type = base::ASCIIToUTF16(process_type_switch);
-  if (process_type.empty())
-    process_type = L"browser";
-
-  wchar_t exe_path[MAX_PATH];
-  exe_path[0] = 0;
-  GetModuleFileNameW(NULL, exe_path, MAX_PATH);
-
-  bool is_per_user_install =
-      GetCrashReporterClient()->GetIsPerUserInstall(base::FilePath(exe_path));
-
-  // This is intentionally leaked.
-  CrashKeysWin* keeper = new CrashKeysWin();
-
-  google_breakpad::CustomClientInfo* custom_info =
-      keeper->GetCustomInfo(exe_path, process_type, GetProfileType(),
-                            base::CommandLine::ForCurrentProcess(),
-                            GetCrashReporterClient());
-
-#if !defined(COMPONENT_BUILD)
-  // chrome/common/child_process_logging_win.cc registers crash keys for
-  // chrome.dll. In a component build, that is sufficient as chrome.dll and
-  // chrome.exe share a copy of base (in base.dll).
-  // In a static build, the EXE must separately initialize the crash keys
-  // configuration as it has its own statically linked copy of base.
-  base::debug::SetCrashKeyReportingFunctions(&SetCrashKeyValueForBaseDebug,
-                                             &ClearCrashKeyForBaseDebug);
-  GetCrashReporterClient()->RegisterCrashKeys();
-#endif
-
-  google_breakpad::ExceptionHandler::MinidumpCallback callback = NULL;
-  LPTOP_LEVEL_EXCEPTION_FILTER default_filter = NULL;
-  // We install the post-dump callback only for the browser and service
-  // processes. It spawns a new browser/service process.
-  if (process_type == L"browser") {
-    callback = &DumpDoneCallback;
-    default_filter = &ChromeExceptionFilter;
-  } else if (process_type == L"service") {
-    callback = &DumpDoneCallback;
-    default_filter = &ServiceExceptionFilter;
-  }
-
-  if (process_type == L"browser") {
-    InitPipeNameEnvVar(is_per_user_install);
-    GetCrashReporterClient()->InitBrowserCrashDumpsRegKey();
-  }
-
-  scoped_ptr<base::Environment> env(base::Environment::Create());
-  std::string pipe_name_ascii;
-  if (!env->GetVar(kPipeNameVar, &pipe_name_ascii)) {
-    // Breakpad is not enabled.  Configuration is managed or the user
-    // did not allow Google Update to send crashes.  We need to use
-    // our default crash handler instead, but only for the
-    // browser/service processes.
-    if (default_filter)
-      InitDefaultCrashCallback(default_filter);
-    return;
-  }
-  base::string16 pipe_name = base::ASCIIToUTF16(pipe_name_ascii);
-
-#ifdef _WIN64
-  // The protocol for connecting to the out-of-process Breakpad crash
-  // reporter is different for x86-32 and x86-64: the message sizes
-  // are different because the message struct contains a pointer.  As
-  // a result, there are two different named pipes to connect to.  The
-  // 64-bit one is distinguished with an "-x64" suffix.
-  pipe_name += L"-x64";
-#endif
-
-  // Get the alternate dump directory. We use the temp path.
-  wchar_t temp_dir[MAX_PATH] = {0};
-  ::GetTempPathW(MAX_PATH, temp_dir);
-
-  MINIDUMP_TYPE dump_type = kSmallDumpType;
-  // Capture full memory if explicitly instructed to.
-  if (command.HasSwitch(switches::kFullMemoryCrashReport))
-    dump_type = kFullDumpType;
-  else if (GetCrashReporterClient()->GetShouldDumpLargerDumps(
-               is_per_user_install))
-    dump_type = kLargerDumpType;
-
-  g_breakpad = new google_breakpad::ExceptionHandler(temp_dir, &FilterCallback,
-                   callback, NULL,
-                   google_breakpad::ExceptionHandler::HANDLER_ALL,
-                   dump_type, pipe_name.c_str(), custom_info);
-
-  // Now initialize the non crash dump handler.
-  g_dumphandler_no_crash = new google_breakpad::ExceptionHandler(temp_dir,
-      &FilterCallbackWhenNoCrash,
-      &DumpDoneCallbackWhenNoCrash,
-      NULL,
-      // Set the handler to none so this handler would not be added to
-      // |handler_stack_| in |ExceptionHandler| which is a list of exception
-      // handlers.
-      google_breakpad::ExceptionHandler::HANDLER_NONE,
-      dump_type, pipe_name.c_str(), custom_info);
-
-  // Set the DumpWithoutCrashingFunction for this instance of base.lib.  Other
-  // executable images linked with base should set this again for
-  // DumpWithoutCrashing to function correctly.
-  // See chrome_main.cc for example.
-  base::debug::SetDumpWithoutCrashingFunction(&DumpProcessWithoutCrash);
-
-  if (g_breakpad->IsOutOfProcess()) {
-    // Tells breakpad to handle breakpoint and single step exceptions.
-    // This might break JIT debuggers, but at least it will always
-    // generate a crashdump for these exceptions.
-    g_breakpad->set_handle_debug_exceptions(true);
-
-#ifndef _WIN64
-    if (process_type != L"browser" &&
-        !GetCrashReporterClient()->IsRunningUnattended()) {
-      // Initialize the hook TerminateProcess to catch unexpected exits.
-      InitTerminateProcessHooks();
-    }
-#endif
-  }
-}
-
-void ConsumeInvalidHandleExceptions() {
-  if (g_breakpad) {
-    g_breakpad->set_consume_invalid_handle_exceptions(true);
-  }
-  if (g_dumphandler_no_crash) {
-    g_dumphandler_no_crash->set_consume_invalid_handle_exceptions(true);
-  }
-}
-
-// If the user has disabled crash reporting uploads and restarted Chrome, the
-// restarted instance will still contain the pipe environment variable, which
-// will allow the restarted process to still upload crash reports. This function
-// clears the environment variable, so that the restarted Chrome, which inherits
-// its environment from the current Chrome, will no longer contain the variable.
-extern "C" void __declspec(dllexport) __cdecl
-      ClearBreakpadPipeEnvironmentVariable() {
-  scoped_ptr<base::Environment> env(base::Environment::Create());
-  env->UnSetVar(kPipeNameVar);
-}
-
-#ifdef _WIN64
-int CrashForExceptionInNonABICompliantCodeRange(
-    PEXCEPTION_RECORD ExceptionRecord,
-    ULONG64 EstablisherFrame,
-    PCONTEXT ContextRecord,
-    PDISPATCHER_CONTEXT DispatcherContext) {
-  EXCEPTION_POINTERS info = { ExceptionRecord, ContextRecord };
-  return CrashForException(&info);
-}
-
-struct ExceptionHandlerRecord {
-  RUNTIME_FUNCTION runtime_function;
-  UNWIND_INFO unwind_info;
-  unsigned char thunk[12];
-};
-
-extern "C" void __declspec(dllexport) __cdecl
-RegisterNonABICompliantCodeRange(void* start, size_t size_in_bytes) {
-  ExceptionHandlerRecord* record =
-      reinterpret_cast<ExceptionHandlerRecord*>(start);
-
-  // We assume that the first page of the code range is executable and
-  // committed and reserved for breakpad. What could possibly go wrong?
-
-  // All addresses are 32bit relative offsets to start.
-  record->runtime_function.BeginAddress = 0;
-  record->runtime_function.EndAddress =
-      base::checked_cast<DWORD>(size_in_bytes);
-  record->runtime_function.UnwindData =
-      offsetof(ExceptionHandlerRecord, unwind_info);
-
-  // Create unwind info that only specifies an exception handler.
-  record->unwind_info.Version = 1;
-  record->unwind_info.Flags = UNW_FLAG_EHANDLER;
-  record->unwind_info.SizeOfProlog = 0;
-  record->unwind_info.CountOfCodes = 0;
-  record->unwind_info.FrameRegister = 0;
-  record->unwind_info.FrameOffset = 0;
-  record->unwind_info.ExceptionHandler =
-      offsetof(ExceptionHandlerRecord, thunk);
-
-  // Hardcoded thunk.
-  // mov imm64, rax
-  record->thunk[0] = 0x48;
-  record->thunk[1] = 0xb8;
-  void* handler = &CrashForExceptionInNonABICompliantCodeRange;
-  memcpy(&record->thunk[2], &handler, 8);
-
-  // jmp rax
-  record->thunk[10] = 0xff;
-  record->thunk[11] = 0xe0;
-
-  // Protect reserved page against modifications.
-  DWORD old_protect;
-  CHECK(VirtualProtect(
-      start, sizeof(ExceptionHandlerRecord), PAGE_EXECUTE_READ, &old_protect));
-  CHECK(RtlAddFunctionTable(
-      &record->runtime_function, 1, reinterpret_cast<DWORD64>(start)));
-}
-
-extern "C" void __declspec(dllexport) __cdecl
-UnregisterNonABICompliantCodeRange(void* start) {
-  ExceptionHandlerRecord* record =
-      reinterpret_cast<ExceptionHandlerRecord*>(start);
-
-  CHECK(RtlDeleteFunctionTable(&record->runtime_function));
-}
-#endif
-
-}  // namespace breakpad