Revert of Turn components/crash into a layered component.

components/crash/content/app/breakpad_linux.cc

Index: components/crash/content/app/breakpad_linux.cc
diff --git a/components/crash/content/app/breakpad_linux.cc b/components/crash/content/app/breakpad_linux.cc
deleted file mode 100644
index c08a7f9039d32c49040415f73dcd7ee19fcb4353..0000000000000000000000000000000000000000
--- a/components/crash/content/app/breakpad_linux.cc
+++ /dev/null
@@ -1,1760 +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.
-
-// For linux_syscall_support.h. This makes it safe to call embedded system
-// calls when in seccomp mode.
-
-#include "components/crash/content/app/breakpad_linux.h"
-
-#include <fcntl.h>
-#include <poll.h>
-#include <signal.h>
-#include <stdlib.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/wait.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <algorithm>
-#include <string>
-
-#include "base/base_switches.h"
-#include "base/command_line.h"
-#include "base/debug/crash_logging.h"
-#include "base/debug/dump_without_crashing.h"
-#include "base/files/file_path.h"
-#include "base/linux_util.h"
-#include "base/path_service.h"
-#include "base/posix/eintr_wrapper.h"
-#include "base/posix/global_descriptors.h"
-#include "base/process/memory.h"
-#include "base/strings/string_util.h"
-#include "breakpad/src/client/linux/crash_generation/crash_generation_client.h"
-#include "breakpad/src/client/linux/handler/exception_handler.h"
-#include "breakpad/src/client/linux/minidump_writer/directory_reader.h"
-#include "breakpad/src/common/linux/linux_libc_support.h"
-#include "breakpad/src/common/memory.h"
-#include "build/build_config.h"
-#include "components/crash/content/app/breakpad_linux_impl.h"
-#include "components/crash/content/app/crash_reporter_client.h"
-#include "content/public/common/content_descriptors.h"
-
-#if defined(OS_ANDROID)
-#include <android/log.h>
-#include <sys/stat.h>
-
-#include "base/android/build_info.h"
-#include "base/android/path_utils.h"
-#include "base/debug/leak_annotations.h"
-#endif
-#include "third_party/lss/linux_syscall_support.h"
-
-#if defined(ADDRESS_SANITIZER)
-#include <ucontext.h>  // for getcontext().
-#endif
-
-#if defined(OS_ANDROID)
-#define STAT_STRUCT struct stat
-#define FSTAT_FUNC fstat
-#else
-#define STAT_STRUCT struct kernel_stat
-#define FSTAT_FUNC sys_fstat
-#endif
-
-// Some versions of gcc are prone to warn about unused return values. In cases
-// where we either a) know the call cannot fail, or b) there is nothing we
-// can do when a call fails, we mark the return code as ignored. This avoids
-// spurious compiler warnings.
-#define IGNORE_RET(x) do { if (x); } while (0)
-
-using crash_reporter::GetCrashReporterClient;
-using google_breakpad::ExceptionHandler;
-using google_breakpad::MinidumpDescriptor;
-
-namespace breakpad {
-
-namespace {
-
-#if !defined(OS_CHROMEOS)
-const char kUploadURL[] = "https://clients2.google.com/cr/report";
-#endif
-
-bool g_is_crash_reporter_enabled = false;
-uint64_t g_process_start_time = 0;
-pid_t g_pid = 0;
-char* g_crash_log_path = nullptr;
-ExceptionHandler* g_breakpad = nullptr;
-
-#if defined(ADDRESS_SANITIZER)
-const char* g_asan_report_str = nullptr;
-#endif
-#if defined(OS_ANDROID)
-char* g_process_type = nullptr;
-ExceptionHandler* g_microdump = nullptr;
-const char* g_microdump_build_fingerprint = nullptr;
-const char* g_microdump_product_info = nullptr;
-#endif
-
-CrashKeyStorage* g_crash_keys = nullptr;
-
-// Writes the value |v| as 16 hex characters to the memory pointed at by
-// |output|.
-void write_uint64_hex(char* output, uint64_t v) {
-  static const char hextable[] = "0123456789abcdef";
-
-  for (int i = 15; i >= 0; --i) {
-    output[i] = hextable[v & 15];
-    v >>= 4;
-  }
-}
-
-// The following helper functions are for calculating uptime.
-
-// Converts a struct timeval to milliseconds.
-uint64_t timeval_to_ms(struct timeval *tv) {
-  uint64_t ret = tv->tv_sec;  // Avoid overflow by explicitly using a uint64_t.
-  ret *= 1000;
-  ret += tv->tv_usec / 1000;
-  return ret;
-}
-
-// Converts a struct timeval to milliseconds.
-uint64_t kernel_timeval_to_ms(struct kernel_timeval *tv) {
-  uint64_t ret = tv->tv_sec;  // Avoid overflow by explicitly using a uint64_t.
-  ret *= 1000;
-  ret += tv->tv_usec / 1000;
-  return ret;
-}
-
-// String buffer size to use to convert a uint64_t to string.
-const size_t kUint64StringSize = 21;
-
-void SetProcessStartTime() {
-  // Set the base process start time value.
-  struct timeval tv;
-  if (!gettimeofday(&tv, nullptr))
-    g_process_start_time = timeval_to_ms(&tv);
-  else
-    g_process_start_time = 0;
-}
-
-// uint64_t version of my_int_len() from
-// breakpad/src/common/linux/linux_libc_support.h. Return the length of the
-// given, non-negative integer when expressed in base 10.
-unsigned my_uint64_len(uint64_t i) {
-  if (!i)
-    return 1;
-
-  unsigned len = 0;
-  while (i) {
-    len++;
-    i /= 10;
-  }
-
-  return len;
-}
-
-// uint64_t version of my_uitos() from
-// breakpad/src/common/linux/linux_libc_support.h. Convert a non-negative
-// integer to a string (not null-terminated).
-void my_uint64tos(char* output, uint64_t i, unsigned i_len) {
-  for (unsigned index = i_len; index; --index, i /= 10)
-    output[index - 1] = '0' + (i % 10);
-}
-
-#if !defined(OS_CHROMEOS)
-bool my_isxdigit(char c) {
-  return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f');
-}
-#endif
-
-size_t LengthWithoutTrailingSpaces(const char* str, size_t len) {
-  while (len > 0 && str[len - 1] == ' ') {
-    len--;
-  }
-  return len;
-}
-
-void SetClientIdFromCommandLine(const base::CommandLine& command_line) {
-  // Get the guid from the command line switch.
-  std::string switch_value =
-      command_line.GetSwitchValueASCII(switches::kEnableCrashReporter);
-  GetCrashReporterClient()->SetCrashReporterClientIdFromGUID(switch_value);
-}
-
-// MIME substrings.
-#if defined(OS_CHROMEOS)
-const char g_sep[] = ":";
-#endif
-const char g_rn[] = "\r\n";
-const char g_form_data_msg[] = "Content-Disposition: form-data; name=\"";
-const char g_quote_msg[] = "\"";
-const char g_dashdash_msg[] = "--";
-const char g_dump_msg[] = "upload_file_minidump\"; filename=\"dump\"";
-#if defined(ADDRESS_SANITIZER)
-const char g_log_msg[] = "upload_file_log\"; filename=\"log\"";
-#endif
-const char g_content_type_msg[] = "Content-Type: application/octet-stream";
-
-// MimeWriter manages an iovec for writing MIMEs to a file.
-class MimeWriter {
- public:
-  static const int kIovCapacity = 30;
-  static const size_t kMaxCrashChunkSize = 64;
-
-  MimeWriter(int fd, const char* const mime_boundary);
-  ~MimeWriter();
-
-  // Append boundary.
-  virtual void AddBoundary();
-
-  // Append end of file boundary.
-  virtual void AddEnd();
-
-  // Append key/value pair with specified sizes.
-  virtual void AddPairData(const char* msg_type,
-                           size_t msg_type_size,
-                           const char* msg_data,
-                           size_t msg_data_size);
-
-  // Append key/value pair.
-  void AddPairString(const char* msg_type,
-                     const char* msg_data) {
-    AddPairData(msg_type, my_strlen(msg_type), msg_data, my_strlen(msg_data));
-  }
-
-  // Append key/value pair, splitting value into chunks no larger than
-  // |chunk_size|. |chunk_size| cannot be greater than |kMaxCrashChunkSize|.
-  // The msg_type string will have a counter suffix to distinguish each chunk.
-  virtual void AddPairDataInChunks(const char* msg_type,
-                                   size_t msg_type_size,
-                                   const char* msg_data,
-                                   size_t msg_data_size,
-                                   size_t chunk_size,
-                                   bool strip_trailing_spaces);
-
-  // Add binary file contents to be uploaded with the specified filename.
-  virtual void AddFileContents(const char* filename_msg,
-                               uint8_t* file_data,
-                               size_t file_size);
-
-  // Flush any pending iovecs to the output file.
-  void Flush() {
-    IGNORE_RET(sys_writev(fd_, iov_, iov_index_));
-    iov_index_ = 0;
-  }
-
- protected:
-  void AddItem(const void* base, size_t size);
-  // Minor performance trade-off for easier-to-maintain code.
-  void AddString(const char* str) {
-    AddItem(str, my_strlen(str));
-  }
-  void AddItemWithoutTrailingSpaces(const void* base, size_t size);
-
-  struct kernel_iovec iov_[kIovCapacity];
-  int iov_index_;
-
-  // Output file descriptor.
-  int fd_;
-
-  const char* const mime_boundary_;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MimeWriter);
-};
-
-MimeWriter::MimeWriter(int fd, const char* const mime_boundary)
-    : iov_index_(0),
-      fd_(fd),
-      mime_boundary_(mime_boundary) {
-}
-
-MimeWriter::~MimeWriter() {
-}
-
-void MimeWriter::AddBoundary() {
-  AddString(mime_boundary_);
-  AddString(g_rn);
-}
-
-void MimeWriter::AddEnd() {
-  AddString(mime_boundary_);
-  AddString(g_dashdash_msg);
-  AddString(g_rn);
-}
-
-void MimeWriter::AddPairData(const char* msg_type,
-                             size_t msg_type_size,
-                             const char* msg_data,
-                             size_t msg_data_size) {
-  AddString(g_form_data_msg);
-  AddItem(msg_type, msg_type_size);
-  AddString(g_quote_msg);
-  AddString(g_rn);
-  AddString(g_rn);
-  AddItem(msg_data, msg_data_size);
-  AddString(g_rn);
-}
-
-void MimeWriter::AddPairDataInChunks(const char* msg_type,
-                                     size_t msg_type_size,
-                                     const char* msg_data,
-                                     size_t msg_data_size,
-                                     size_t chunk_size,
-                                     bool strip_trailing_spaces) {
-  if (chunk_size > kMaxCrashChunkSize)
-    return;
-
-  unsigned i = 0;
-  size_t done = 0, msg_length = msg_data_size;
-
-  while (msg_length) {
-    char num[kUint64StringSize];
-    const unsigned num_len = my_uint_len(++i);
-    my_uitos(num, i, num_len);
-
-    size_t chunk_len = std::min(chunk_size, msg_length);
-
-    AddString(g_form_data_msg);
-    AddItem(msg_type, msg_type_size);
-    AddItem(num, num_len);
-    AddString(g_quote_msg);
-    AddString(g_rn);
-    AddString(g_rn);
-    if (strip_trailing_spaces) {
-      AddItemWithoutTrailingSpaces(msg_data + done, chunk_len);
-    } else {
-      AddItem(msg_data + done, chunk_len);
-    }
-    AddString(g_rn);
-    AddBoundary();
-    Flush();
-
-    done += chunk_len;
-    msg_length -= chunk_len;
-  }
-}
-
-void MimeWriter::AddFileContents(const char* filename_msg, uint8_t* file_data,
-                                 size_t file_size) {
-  AddString(g_form_data_msg);
-  AddString(filename_msg);
-  AddString(g_rn);
-  AddString(g_content_type_msg);
-  AddString(g_rn);
-  AddString(g_rn);
-  AddItem(file_data, file_size);
-  AddString(g_rn);
-}
-
-void MimeWriter::AddItem(const void* base, size_t size) {
-  // Check if the iovec is full and needs to be flushed to output file.
-  if (iov_index_ == kIovCapacity) {
-    Flush();
-  }
-  iov_[iov_index_].iov_base = const_cast<void*>(base);
-  iov_[iov_index_].iov_len = size;
-  ++iov_index_;
-}
-
-void MimeWriter::AddItemWithoutTrailingSpaces(const void* base, size_t size) {
-  AddItem(base, LengthWithoutTrailingSpaces(static_cast<const char*>(base),
-                                            size));
-}
-
-#if defined(OS_CHROMEOS)
-// This subclass is used on Chromium OS to report crashes in a format easy for
-// the central crash reporting facility to understand.
-// Format is <name>:<data length in decimal>:<data>
-class CrashReporterWriter : public MimeWriter {
- public:
-  explicit CrashReporterWriter(int fd);
-
-  void AddBoundary() override;
-
-  void AddEnd() override;
-
-  void AddPairData(const char* msg_type,
-                   size_t msg_type_size,
-                   const char* msg_data,
-                   size_t msg_data_size) override;
-
-  void AddPairDataInChunks(const char* msg_type,
-                           size_t msg_type_size,
-                           const char* msg_data,
-                           size_t msg_data_size,
-                           size_t chunk_size,
-                           bool strip_trailing_spaces) override;
-
-  void AddFileContents(const char* filename_msg,
-                       uint8_t* file_data,
-                       size_t file_size) override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(CrashReporterWriter);
-};
-
-
-CrashReporterWriter::CrashReporterWriter(int fd) : MimeWriter(fd, "") {}
-
-// No-ops.
-void CrashReporterWriter::AddBoundary() {}
-void CrashReporterWriter::AddEnd() {}
-
-void CrashReporterWriter::AddPairData(const char* msg_type,
-                                      size_t msg_type_size,
-                                      const char* msg_data,
-                                      size_t msg_data_size) {
-  char data[kUint64StringSize];
-  const unsigned data_len = my_uint_len(msg_data_size);
-  my_uitos(data, msg_data_size, data_len);
-
-  AddItem(msg_type, msg_type_size);
-  AddString(g_sep);
-  AddItem(data, data_len);
-  AddString(g_sep);
-  AddItem(msg_data, msg_data_size);
-  Flush();
-}
-
-void CrashReporterWriter::AddPairDataInChunks(const char* msg_type,
-                                              size_t msg_type_size,
-                                              const char* msg_data,
-                                              size_t msg_data_size,
-                                              size_t chunk_size,
-                                              bool strip_trailing_spaces) {
-  if (chunk_size > kMaxCrashChunkSize)
-    return;
-
-  unsigned i = 0;
-  size_t done = 0;
-  size_t msg_length = msg_data_size;
-
-  while (msg_length) {
-    char num[kUint64StringSize];
-    const unsigned num_len = my_uint_len(++i);
-    my_uitos(num, i, num_len);
-
-    size_t chunk_len = std::min(chunk_size, msg_length);
-
-    size_t write_len = chunk_len;
-    if (strip_trailing_spaces) {
-      // Take care of this here because we need to know the exact length of
-      // what is going to be written.
-      write_len = LengthWithoutTrailingSpaces(msg_data + done, write_len);
-    }
-
-    char data[kUint64StringSize];
-    const unsigned data_len = my_uint_len(write_len);
-    my_uitos(data, write_len, data_len);
-
-    AddItem(msg_type, msg_type_size);
-    AddItem(num, num_len);
-    AddString(g_sep);
-    AddItem(data, data_len);
-    AddString(g_sep);
-    AddItem(msg_data + done, write_len);
-    Flush();
-
-    done += chunk_len;
-    msg_length -= chunk_len;
-  }
-}
-
-void CrashReporterWriter::AddFileContents(const char* filename_msg,
-                                          uint8_t* file_data,
-                                          size_t file_size) {
-  char data[kUint64StringSize];
-  const unsigned data_len = my_uint_len(file_size);
-  my_uitos(data, file_size, data_len);
-
-  AddString(filename_msg);
-  AddString(g_sep);
-  AddItem(data, data_len);
-  AddString(g_sep);
-  AddItem(file_data, file_size);
-  Flush();
-}
-#endif  // defined(OS_CHROMEOS)
-
-void DumpProcess() {
-  if (g_breakpad)
-    g_breakpad->WriteMinidump();
-
-#if defined(OS_ANDROID)
-  // If microdumps are enabled write also a microdump on the system log.
-  if (g_microdump)
-    g_microdump->WriteMinidump();
-#endif
-}
-
-#if defined(OS_ANDROID)
-const char kGoogleBreakpad[] = "google-breakpad";
-#endif
-
-size_t WriteLog(const char* buf, size_t nbytes) {
-#if defined(OS_ANDROID)
-  return __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad, buf);
-#else
-  return sys_write(2, buf, nbytes);
-#endif
-}
-
-size_t WriteNewline() {
-  return WriteLog("\n", 1);
-}
-
-#if defined(OS_ANDROID)
-void AndroidLogWriteHorizontalRule() {
-  __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad,
-                      "### ### ### ### ### ### ### ### ### ### ### ### ###");
-}
-
-// Android's native crash handler outputs a diagnostic tombstone to the device
-// log. By returning false from the HandlerCallbacks, breakpad will reinstall
-// the previous (i.e. native) signal handlers before returning from its own
-// handler. A Chrome build fingerprint is written to the log, so that the
-// specific build of Chrome and the location of the archived Chrome symbols can
-// be determined directly from it.
-bool FinalizeCrashDoneAndroid(bool is_browser_process) {
-  base::android::BuildInfo* android_build_info =
-      base::android::BuildInfo::GetInstance();
-
-  AndroidLogWriteHorizontalRule();
-  __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad,
-                      "Chrome build fingerprint:");
-  __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad,
-                      android_build_info->package_version_name());
-  __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad,
-                      android_build_info->package_version_code());
-  __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad,
-                      CHROME_BUILD_ID);
-  AndroidLogWriteHorizontalRule();
-
-  if (!is_browser_process &&
-      android_build_info->sdk_int() >= 18 &&
-      my_strcmp(android_build_info->build_type(), "eng") != 0 &&
-      my_strcmp(android_build_info->build_type(), "userdebug") != 0) {
-    // On JB MR2 and later, the system crash handler displays a dialog. For
-    // renderer crashes, this is a bad user experience and so this is disabled
-    // for user builds of Android.
-    // TODO(cjhopman): There should be some way to recover the crash stack from
-    // non-uploading user clients. See http://crbug.com/273706.
-    __android_log_write(ANDROID_LOG_WARN,
-                        kGoogleBreakpad,
-                        "Tombstones are disabled on JB MR2+ user builds.");
-    AndroidLogWriteHorizontalRule();
-    return true;
-  }
-  return false;
-}
-#endif
-
-bool CrashDone(const MinidumpDescriptor& minidump,
-               const bool upload,
-               const bool succeeded) {
-  // WARNING: this code runs in a compromised context. It may not call into
-  // libc nor allocate memory normally.
-  if (!succeeded) {
-    const char msg[] = "Failed to generate minidump.";
-    WriteLog(msg, sizeof(msg) - 1);
-    return false;
-  }
-
-  DCHECK(!minidump.IsFD());
-
-  BreakpadInfo info = {0};
-  info.filename = minidump.path();
-  info.fd = minidump.fd();
-#if defined(ADDRESS_SANITIZER)
-  google_breakpad::PageAllocator allocator;
-  const size_t log_path_len = my_strlen(minidump.path());
-  char* log_path = reinterpret_cast<char*>(allocator.Alloc(log_path_len + 1));
-  my_memcpy(log_path, minidump.path(), log_path_len);
-  my_memcpy(log_path + log_path_len - 4, ".log", 4);
-  log_path[log_path_len] = '\0';
-  info.log_filename = log_path;
-#endif
-  info.process_type = "browser";
-  info.process_type_length = 7;
-  info.distro = base::g_linux_distro;
-  info.distro_length = my_strlen(base::g_linux_distro);
-  info.upload = upload;
-  info.process_start_time = g_process_start_time;
-  info.oom_size = base::g_oom_size;
-  info.pid = g_pid;
-  info.crash_keys = g_crash_keys;
-  HandleCrashDump(info);
-#if defined(OS_ANDROID)
-  return FinalizeCrashDoneAndroid(true /* is_browser_process */);
-#else
-  return true;
-#endif
-}
-
-// Wrapper function, do not add more code here.
-bool CrashDoneNoUpload(const MinidumpDescriptor& minidump,
-                       void* context,
-                       bool succeeded) {
-  return CrashDone(minidump, false, succeeded);
-}
-
-#if !defined(OS_ANDROID)
-// Wrapper function, do not add more code here.
-bool CrashDoneUpload(const MinidumpDescriptor& minidump,
-                     void* context,
-                     bool succeeded) {
-  return CrashDone(minidump, true, succeeded);
-}
-#endif
-
-#if defined(ADDRESS_SANITIZER)
-extern "C"
-void __asan_set_error_report_callback(void (*cb)(const char*));
-
-extern "C"
-void AsanLinuxBreakpadCallback(const char* report) {
-  g_asan_report_str = report;
-  // Send minidump here.
-  g_breakpad->SimulateSignalDelivery(SIGKILL);
-}
-#endif
-
-void EnableCrashDumping(bool unattended) {
-  g_is_crash_reporter_enabled = true;
-
-  base::FilePath tmp_path("/tmp");
-  PathService::Get(base::DIR_TEMP, &tmp_path);
-
-  base::FilePath dumps_path(tmp_path);
-  if (GetCrashReporterClient()->GetCrashDumpLocation(&dumps_path)) {
-    base::FilePath logfile =
-        dumps_path.Append(GetCrashReporterClient()->GetReporterLogFilename());
-    std::string logfile_str = logfile.value();
-    const size_t crash_log_path_len = logfile_str.size() + 1;
-    g_crash_log_path = new char[crash_log_path_len];
-    strncpy(g_crash_log_path, logfile_str.c_str(), crash_log_path_len);
-  }
-  DCHECK(!g_breakpad);
-  MinidumpDescriptor minidump_descriptor(dumps_path.value());
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kFullMemoryCrashReport)) {
-    minidump_descriptor.set_size_limit(-1);  // unlimited.
-  } else {
-    minidump_descriptor.set_size_limit(kMaxMinidumpFileSize);
-  }
-#if defined(OS_ANDROID)
-  unattended = true;  // Android never uploads directly.
-#endif
-  if (unattended) {
-    g_breakpad = new ExceptionHandler(
-        minidump_descriptor,
-        nullptr,
-        CrashDoneNoUpload,
-        nullptr,
-        true,  // Install handlers.
-        -1);   // Server file descriptor. -1 for in-process.
-    return;
-  }
-
-#if !defined(OS_ANDROID)
-  // Attended mode
-  g_breakpad = new ExceptionHandler(
-      minidump_descriptor,
-      nullptr,
-      CrashDoneUpload,
-      nullptr,
-      true,  // Install handlers.
-      -1);   // Server file descriptor. -1 for in-process.
-#endif
-}
-
-#if defined(OS_ANDROID)
-bool MicrodumpCrashDone(const MinidumpDescriptor& minidump,
-                        void* context,
-                        bool succeeded) {
-  // WARNING: this code runs in a compromised context. It may not call into
-  // libc nor allocate memory normally.
-  if (!succeeded) {
-    static const char msg[] = "Microdump crash handler failed.\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    return false;
-  }
-
-  const bool is_browser_process = (context != nullptr);
-  return FinalizeCrashDoneAndroid(is_browser_process);
- }
-
-// The microdump handler does NOT upload anything. It just dumps out on the
-// system console (logcat) a restricted and serialized variant of a minidump.
-// See crbug.com/410294 for more details.
-void InitMicrodumpCrashHandlerIfNecessary(const std::string& process_type) {
-  if (!GetCrashReporterClient()->ShouldEnableBreakpadMicrodumps())
-    return;
-
-  VLOG(1) << "Enabling microdumps crash handler (process_type:"
-          << process_type << ")";
-
-  // The exception handler runs in a compromised context and cannot use c_str()
-  // as that would require the heap. Therefore, we have to guarantee that the
-  // build fingerprint and product info pointers are always valid.
-  const char* product_name = nullptr;
-  const char* product_version = nullptr;
-  GetCrashReporterClient()->GetProductNameAndVersion(&product_name,
-                                                     &product_version);
-
-  MinidumpDescriptor descriptor(MinidumpDescriptor::kMicrodumpOnConsole);
-
-  if (product_name && product_version) {
-    g_microdump_product_info = strdup(
-        (product_name + std::string(":") + product_version).c_str());
-    ANNOTATE_LEAKING_OBJECT_PTR(g_microdump_product_info);
-    descriptor.SetMicrodumpProductInfo(g_microdump_product_info);
-  }
-
-  const char* android_build_fp =
-      base::android::BuildInfo::GetInstance()->android_build_fp();
-  if (android_build_fp) {
-    g_microdump_build_fingerprint = strdup(android_build_fp);
-    ANNOTATE_LEAKING_OBJECT_PTR(g_microdump_build_fingerprint);
-    descriptor.SetMicrodumpBuildFingerprint(g_microdump_build_fingerprint);
-  }
-
-  DCHECK(!g_microdump);
-  bool is_browser_process = process_type.empty() || process_type == "webview";
-  g_microdump = new ExceptionHandler(
-        descriptor,
-        nullptr,
-        MicrodumpCrashDone,
-        reinterpret_cast<void*>(is_browser_process),
-        true,  // Install handlers.
-        -1);   // Server file descriptor. -1 for in-process.
-    return;
-}
-
-bool CrashDoneInProcessNoUpload(
-    const google_breakpad::MinidumpDescriptor& descriptor,
-    void* context,
-    const bool succeeded) {
-  // WARNING: this code runs in a compromised context. It may not call into
-  // libc nor allocate memory normally.
-  if (!succeeded) {
-    static const char msg[] = "Crash dump generation failed.\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    return false;
-  }
-
-  // Start constructing the message to send to the browser.
-  BreakpadInfo info = {0};
-  info.filename = nullptr;
-  info.fd = descriptor.fd();
-  info.process_type = g_process_type;
-  info.process_type_length = my_strlen(g_process_type);
-  info.distro = nullptr;
-  info.distro_length = 0;
-  info.upload = false;
-  info.process_start_time = g_process_start_time;
-  info.pid = g_pid;
-  info.crash_keys = g_crash_keys;
-  HandleCrashDump(info);
-  return FinalizeCrashDoneAndroid(false /* is_browser_process */);
-}
-
-void EnableNonBrowserCrashDumping(const std::string& process_type,
-                                  int minidump_fd) {
-  // This will guarantee that the BuildInfo has been initialized and subsequent
-  // calls will not require memory allocation.
-  base::android::BuildInfo::GetInstance();
-  SetClientIdFromCommandLine(*base::CommandLine::ForCurrentProcess());
-
-  // On Android, the current sandboxing uses process isolation, in which the
-  // child process runs with a different UID. That breaks the normal crash
-  // reporting where the browser process generates the minidump by inspecting
-  // the child process. This is because the browser process now does not have
-  // the permission to access the states of the child process (as it has a
-  // different UID).
-  // TODO(jcivelli): http://b/issue?id=6776356 we should use a watchdog
-  // process forked from the renderer process that generates the minidump.
-  if (minidump_fd == -1) {
-    LOG(ERROR) << "Minidump file descriptor not found, crash reporting will "
-        " not work.";
-    return;
-  }
-  SetProcessStartTime();
-  g_pid = getpid();
-
-  g_is_crash_reporter_enabled = true;
-  // Save the process type (it is leaked).
-  const size_t process_type_len = process_type.size() + 1;
-  g_process_type = new char[process_type_len];
-  strncpy(g_process_type, process_type.c_str(), process_type_len);
-  new google_breakpad::ExceptionHandler(MinidumpDescriptor(minidump_fd),
-      nullptr, CrashDoneInProcessNoUpload, nullptr, true, -1);
-}
-#else
-// Non-Browser = Extension, Gpu, Plugins, Ppapi and Renderer
-class NonBrowserCrashHandler : public google_breakpad::CrashGenerationClient {
- public:
-  NonBrowserCrashHandler()
-      : server_fd_(base::GlobalDescriptors::GetInstance()->Get(
-            kCrashDumpSignal)) {
-  }
-
-  ~NonBrowserCrashHandler() override {}
-
-  bool RequestDump(const void* crash_context,
-                   size_t crash_context_size) override {
-    int fds[2] = { -1, -1 };
-    if (sys_socketpair(AF_UNIX, SOCK_STREAM, 0, fds) < 0) {
-      static const char msg[] = "Failed to create socket for crash dumping.\n";
-      WriteLog(msg, sizeof(msg) - 1);
-      return false;
-    }
-
-    // Start constructing the message to send to the browser.
-    char b;  // Dummy variable for sys_read below.
-    const char* b_addr = &b;  // Get the address of |b| so we can create the
-                              // expected /proc/[pid]/syscall content in the
-                              // browser to convert namespace tids.
-
-    // The length of the control message:
-    static const unsigned kControlMsgSize = sizeof(int);
-    static const unsigned kControlMsgSpaceSize = CMSG_SPACE(kControlMsgSize);
-    static const unsigned kControlMsgLenSize = CMSG_LEN(kControlMsgSize);
-
-    struct kernel_msghdr msg;
-    my_memset(&msg, 0, sizeof(struct kernel_msghdr));
-    struct kernel_iovec iov[kCrashIovSize];
-    iov[0].iov_base = const_cast<void*>(crash_context);
-    iov[0].iov_len = crash_context_size;
-    iov[1].iov_base = &b_addr;
-    iov[1].iov_len = sizeof(b_addr);
-    iov[2].iov_base = &fds[0];
-    iov[2].iov_len = sizeof(fds[0]);
-    iov[3].iov_base = &g_process_start_time;
-    iov[3].iov_len = sizeof(g_process_start_time);
-    iov[4].iov_base = &base::g_oom_size;
-    iov[4].iov_len = sizeof(base::g_oom_size);
-    google_breakpad::SerializedNonAllocatingMap* serialized_map;
-    iov[5].iov_len = g_crash_keys->Serialize(
-        const_cast<const google_breakpad::SerializedNonAllocatingMap**>(
-            &serialized_map));
-    iov[5].iov_base = serialized_map;
-#if !defined(ADDRESS_SANITIZER)
-    static_assert(5 == kCrashIovSize - 1, "kCrashIovSize should equal 6");
-#else
-    iov[6].iov_base = const_cast<char*>(g_asan_report_str);
-    iov[6].iov_len = kMaxAsanReportSize + 1;
-    static_assert(6 == kCrashIovSize - 1, "kCrashIovSize should equal 7");
-#endif
-
-    msg.msg_iov = iov;
-    msg.msg_iovlen = kCrashIovSize;
-    char cmsg[kControlMsgSpaceSize];
-    my_memset(cmsg, 0, kControlMsgSpaceSize);
-    msg.msg_control = cmsg;
-    msg.msg_controllen = sizeof(cmsg);
-
-    struct cmsghdr *hdr = CMSG_FIRSTHDR(&msg);
-    hdr->cmsg_level = SOL_SOCKET;
-    hdr->cmsg_type = SCM_RIGHTS;
-    hdr->cmsg_len = kControlMsgLenSize;
-    ((int*)CMSG_DATA(hdr))[0] = fds[1];
-
-    if (HANDLE_EINTR(sys_sendmsg(server_fd_, &msg, 0)) < 0) {
-      static const char errmsg[] = "Failed to tell parent about crash.\n";
-      WriteLog(errmsg, sizeof(errmsg) - 1);
-      IGNORE_RET(sys_close(fds[0]));
-      IGNORE_RET(sys_close(fds[1]));
-      return false;
-    }
-    IGNORE_RET(sys_close(fds[1]));
-
-    if (HANDLE_EINTR(sys_read(fds[0], &b, 1)) != 1) {
-      static const char errmsg[] = "Parent failed to complete crash dump.\n";
-      WriteLog(errmsg, sizeof(errmsg) - 1);
-    }
-    IGNORE_RET(sys_close(fds[0]));
-
-    return true;
-  }
-
- private:
-  // The pipe FD to the browser process, which will handle the crash dumping.
-  const int server_fd_;
-
-  DISALLOW_COPY_AND_ASSIGN(NonBrowserCrashHandler);
-};
-
-void EnableNonBrowserCrashDumping() {
-  g_is_crash_reporter_enabled = true;
-  // We deliberately leak this object.
-  DCHECK(!g_breakpad);
-
-  g_breakpad = new ExceptionHandler(
-      MinidumpDescriptor("/tmp"),  // Unused but needed or Breakpad will assert.
-      nullptr,
-      nullptr,
-      nullptr,
-      true,
-      -1);
-  g_breakpad->set_crash_generation_client(new NonBrowserCrashHandler());
-}
-#endif  // defined(OS_ANDROID)
-
-void SetCrashKeyValue(const base::StringPiece& key,
-                      const base::StringPiece& value) {
-  g_crash_keys->SetKeyValue(key.data(), value.data());
-}
-
-void ClearCrashKey(const base::StringPiece& key) {
-  g_crash_keys->RemoveKey(key.data());
-}
-
-// GetCrashReporterClient() cannot call any Set methods until after
-// InitCrashKeys().
-void InitCrashKeys() {
-  g_crash_keys = new CrashKeyStorage;
-  GetCrashReporterClient()->RegisterCrashKeys();
-  base::debug::SetCrashKeyReportingFunctions(&SetCrashKeyValue, &ClearCrashKey);
-}
-
-// Miscellaneous initialization functions to call after Breakpad has been
-// enabled.
-void PostEnableBreakpadInitialization() {
-  SetProcessStartTime();
-  g_pid = getpid();
-
-  base::debug::SetDumpWithoutCrashingFunction(&DumpProcess);
-#if defined(ADDRESS_SANITIZER)
-  // Register the callback for AddressSanitizer error reporting.
-  __asan_set_error_report_callback(AsanLinuxBreakpadCallback);
-#endif
-}
-
-}  // namespace
-
-void LoadDataFromFD(google_breakpad::PageAllocator& allocator,
-                    int fd, bool close_fd, uint8_t** file_data, size_t* size) {
-  STAT_STRUCT st;
-  if (FSTAT_FUNC(fd, &st) != 0) {
-    static const char msg[] = "Cannot upload crash dump: stat failed\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    if (close_fd)
-      IGNORE_RET(sys_close(fd));
-    return;
-  }
-
-  *file_data = reinterpret_cast<uint8_t*>(allocator.Alloc(st.st_size));
-  if (!(*file_data)) {
-    static const char msg[] = "Cannot upload crash dump: cannot alloc\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    if (close_fd)
-      IGNORE_RET(sys_close(fd));
-    return;
-  }
-  my_memset(*file_data, 0xf, st.st_size);
-
-  *size = st.st_size;
-  int byte_read = sys_read(fd, *file_data, *size);
-  if (byte_read == -1) {
-    static const char msg[] = "Cannot upload crash dump: read failed\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    if (close_fd)
-      IGNORE_RET(sys_close(fd));
-    return;
-  }
-
-  if (close_fd)
-    IGNORE_RET(sys_close(fd));
-}
-
-void LoadDataFromFile(google_breakpad::PageAllocator& allocator,
-                      const char* filename,
-                      int* fd, uint8_t** file_data, size_t* size) {
-  // WARNING: this code runs in a compromised context. It may not call into
-  // libc nor allocate memory normally.
-  *fd = sys_open(filename, O_RDONLY, 0);
-  *size = 0;
-
-  if (*fd < 0) {
-    static const char msg[] = "Cannot upload crash dump: failed to open\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    return;
-  }
-
-  LoadDataFromFD(allocator, *fd, true, file_data, size);
-}
-
-// Spawn the appropriate upload process for the current OS:
-// - generic Linux invokes wget.
-// - ChromeOS invokes crash_reporter.
-// |dumpfile| is the path to the dump data file.
-// |mime_boundary| is only used on Linux.
-// |exe_buf| is only used on CrOS and is the crashing process' name.
-void ExecUploadProcessOrTerminate(const BreakpadInfo& info,
-                                  const char* dumpfile,
-                                  const char* mime_boundary,
-                                  const char* exe_buf,
-                                  google_breakpad::PageAllocator* allocator) {
-#if defined(OS_CHROMEOS)
-  // CrOS uses crash_reporter instead of wget to report crashes,
-  // it needs to know where the crash dump lives and the pid and uid of the
-  // crashing process.
-  static const char kCrashReporterBinary[] = "/sbin/crash_reporter";
-
-  char pid_buf[kUint64StringSize];
-  uint64_t pid_str_length = my_uint64_len(info.pid);
-  my_uint64tos(pid_buf, info.pid, pid_str_length);
-  pid_buf[pid_str_length] = '\0';
-
-  char uid_buf[kUint64StringSize];
-  uid_t uid = geteuid();
-  uint64_t uid_str_length = my_uint64_len(uid);
-  my_uint64tos(uid_buf, uid, uid_str_length);
-  uid_buf[uid_str_length] = '\0';
-
-  const char kChromeFlag[] = "--chrome=";
-  size_t buf_len = my_strlen(dumpfile) + sizeof(kChromeFlag);
-  char* chrome_flag = reinterpret_cast<char*>(allocator->Alloc(buf_len));
-  chrome_flag[0] = '\0';
-  my_strlcat(chrome_flag, kChromeFlag, buf_len);
-  my_strlcat(chrome_flag, dumpfile, buf_len);
-
-  const char kPidFlag[] = "--pid=";
-  buf_len = my_strlen(pid_buf) + sizeof(kPidFlag);
-  char* pid_flag = reinterpret_cast<char*>(allocator->Alloc(buf_len));
-  pid_flag[0] = '\0';
-  my_strlcat(pid_flag, kPidFlag, buf_len);
-  my_strlcat(pid_flag, pid_buf, buf_len);
-
-  const char kUidFlag[] = "--uid=";
-  buf_len = my_strlen(uid_buf) + sizeof(kUidFlag);
-  char* uid_flag = reinterpret_cast<char*>(allocator->Alloc(buf_len));
-  uid_flag[0] = '\0';
-  my_strlcat(uid_flag, kUidFlag, buf_len);
-  my_strlcat(uid_flag, uid_buf, buf_len);
-
-  const char kExeBuf[] = "--exe=";
-  buf_len = my_strlen(exe_buf) + sizeof(kExeBuf);
-  char* exe_flag = reinterpret_cast<char*>(allocator->Alloc(buf_len));
-  exe_flag[0] = '\0';
-  my_strlcat(exe_flag, kExeBuf, buf_len);
-  my_strlcat(exe_flag, exe_buf, buf_len);
-
-  const char* args[] = {
-    kCrashReporterBinary,
-    chrome_flag,
-    pid_flag,
-    uid_flag,
-    exe_flag,
-    nullptr,
-  };
-  static const char msg[] = "Cannot upload crash dump: cannot exec "
-                            "/sbin/crash_reporter\n";
-#else
-  // Compress |dumpfile| with gzip.
-  const pid_t gzip_child = sys_fork();
-  if (gzip_child < 0) {
-    static const char msg[] = "sys_fork() for gzip process failed.\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    sys__exit(1);
-  }
-  if (!gzip_child) {
-    // gzip process.
-    const char* args[] = {
-      "/bin/gzip",
-      "-f",  // Do not prompt to verify before overwriting.
-      dumpfile,
-      nullptr,
-    };
-    execve(args[0], const_cast<char**>(args), environ);
-    static const char msg[] = "Cannot exec gzip.\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    sys__exit(1);
-  }
-  // Wait for gzip process.
-  int status = 0;
-  if (sys_waitpid(gzip_child, &status, 0) != gzip_child ||
-      !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
-    static const char msg[] = "sys_waitpid() for gzip process failed.\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    sys_kill(gzip_child, SIGKILL);
-    sys__exit(1);
-  }
-
-  static const char kGzipExtension[] = ".gz";
-  const size_t gzip_file_size = my_strlen(dumpfile) + sizeof(kGzipExtension);
-  char* const gzip_file = reinterpret_cast<char*>(allocator->Alloc(
-      gzip_file_size));
-  my_strlcpy(gzip_file, dumpfile, gzip_file_size);
-  my_strlcat(gzip_file, kGzipExtension, gzip_file_size);
-
-  // Rename |gzip_file| to |dumpfile| (the original file was deleted by gzip).
-  if (rename(gzip_file, dumpfile)) {
-    static const char msg[] = "Failed to rename gzipped file.\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    sys__exit(1);
-  }
-
-  // The --header argument to wget looks like:
-  //   --header=Content-Encoding: gzip
-  //   --header=Content-Type: multipart/form-data; boundary=XYZ
-  // where the boundary has two fewer leading '-' chars
-  static const char header_content_encoding[] =
-      "--header=Content-Encoding: gzip";
-  static const char header_msg[] =
-      "--header=Content-Type: multipart/form-data; boundary=";
-  const size_t header_content_type_size =
-      sizeof(header_msg) - 1 + my_strlen(mime_boundary) - 2 + 1;
-  char* const header_content_type = reinterpret_cast<char*>(allocator->Alloc(
-      header_content_type_size));
-  my_strlcpy(header_content_type, header_msg, header_content_type_size);
-  my_strlcat(header_content_type, mime_boundary + 2, header_content_type_size);
-
-  // The --post-file argument to wget looks like:
-  //   --post-file=/tmp/...
-  static const char post_file_msg[] = "--post-file=";
-  const size_t post_file_size =
-      sizeof(post_file_msg) - 1 + my_strlen(dumpfile) + 1;
-  char* const post_file = reinterpret_cast<char*>(allocator->Alloc(
-      post_file_size));
-  my_strlcpy(post_file, post_file_msg, post_file_size);
-  my_strlcat(post_file, dumpfile, post_file_size);
-
-  static const char kWgetBinary[] = "/usr/bin/wget";
-  const char* args[] = {
-    kWgetBinary,
-    header_content_encoding,
-    header_content_type,
-    post_file,
-    kUploadURL,
-    "--timeout=10",  // Set a timeout so we don't hang forever.
-    "--tries=1",     // Don't retry if the upload fails.
-    "-O",  // output reply to fd 3
-    "/dev/fd/3",
-    nullptr,
-  };
-  static const char msg[] = "Cannot upload crash dump: cannot exec "
-                            "/usr/bin/wget\n";
-#endif
-  execve(args[0], const_cast<char**>(args), environ);
-  WriteLog(msg, sizeof(msg) - 1);
-  sys__exit(1);
-}
-
-// Runs in the helper process to wait for the upload process running
-// ExecUploadProcessOrTerminate() to finish. Returns the number of bytes written
-// to |fd| and save the written contents to |buf|.
-// |buf| needs to be big enough to hold |bytes_to_read| + 1 characters.
-size_t WaitForCrashReportUploadProcess(int fd, size_t bytes_to_read,
-                                       char* buf) {
-  size_t bytes_read = 0;
-
-  // Upload should finish in about 10 seconds. Add a few more 500 ms
-  // internals to account for process startup time.
-  for (size_t wait_count = 0; wait_count < 24; ++wait_count) {
-    struct kernel_pollfd poll_fd;
-    poll_fd.fd = fd;
-    poll_fd.events = POLLIN | POLLPRI | POLLERR;
-    int ret = sys_poll(&poll_fd, 1, 500);
-    if (ret < 0) {
-      // Error
-      break;
-    } else if (ret > 0) {
-      // There is data to read.
-      ssize_t len = HANDLE_EINTR(
-          sys_read(fd, buf + bytes_read, bytes_to_read - bytes_read));
-      if (len < 0)
-        break;
-      bytes_read += len;
-      if (bytes_read == bytes_to_read)
-        break;
-    }
-    // |ret| == 0 -> timed out, continue waiting.
-    // or |bytes_read| < |bytes_to_read| still, keep reading.
-  }
-  buf[bytes_to_read] = 0;  // Always NUL terminate the buffer.
-  return bytes_read;
-}
-
-// |buf| should be |expected_len| + 1 characters in size and nullptr terminated.
-bool IsValidCrashReportId(const char* buf, size_t bytes_read,
-                          size_t expected_len) {
-  if (bytes_read != expected_len)
-    return false;
-#if defined(OS_CHROMEOS)
-  return my_strcmp(buf, "_sys_cr_finished") == 0;
-#else
-  for (size_t i = 0; i < bytes_read; ++i) {
-    if (!my_isxdigit(buf[i]))
-      return false;
-  }
-  return true;
-#endif
-}
-
-// |buf| should be |expected_len| + 1 characters in size and nullptr terminated.
-void HandleCrashReportId(const char* buf, size_t bytes_read,
-                         size_t expected_len) {
-  WriteNewline();
-  if (!IsValidCrashReportId(buf, bytes_read, expected_len)) {
-#if defined(OS_CHROMEOS)
-    static const char msg[] =
-        "System crash-reporter failed to process crash report.";
-#else
-    static const char msg[] = "Failed to get crash dump id.";
-#endif
-    WriteLog(msg, sizeof(msg) - 1);
-    WriteNewline();
-
-    static const char id_msg[] = "Report Id: ";
-    WriteLog(id_msg, sizeof(id_msg) - 1);
-    WriteLog(buf, bytes_read);
-    WriteNewline();
-    return;
-  }
-
-#if defined(OS_CHROMEOS)
-  static const char msg[] = "Crash dump received by crash_reporter\n";
-  WriteLog(msg, sizeof(msg) - 1);
-#else
-  // Write crash dump id to stderr.
-  static const char msg[] = "Crash dump id: ";
-  WriteLog(msg, sizeof(msg) - 1);
-  WriteLog(buf, my_strlen(buf));
-  WriteNewline();
-
-  // Write crash dump id to crash log as: seconds_since_epoch,crash_id
-  struct kernel_timeval tv;
-  if (g_crash_log_path && !sys_gettimeofday(&tv, nullptr)) {
-    uint64_t time = kernel_timeval_to_ms(&tv) / 1000;
-    char time_str[kUint64StringSize];
-    const unsigned time_len = my_uint64_len(time);
-    my_uint64tos(time_str, time, time_len);
-
-    const int kLogOpenFlags = O_CREAT | O_WRONLY | O_APPEND | O_CLOEXEC;
-    int log_fd = sys_open(g_crash_log_path, kLogOpenFlags, 0600);
-    if (log_fd > 0) {
-      sys_write(log_fd, time_str, time_len);
-      sys_write(log_fd, ",", 1);
-      sys_write(log_fd, buf, my_strlen(buf));
-      sys_write(log_fd, "\n", 1);
-      IGNORE_RET(sys_close(log_fd));
-    }
-  }
-#endif
-}
-
-#if defined(OS_CHROMEOS)
-const char* GetCrashingProcessName(const BreakpadInfo& info,
-                                   google_breakpad::PageAllocator* allocator) {
-  // Symlink to process binary is at /proc/###/exe.
-  char linkpath[kUint64StringSize + sizeof("/proc/") + sizeof("/exe")] =
-    "/proc/";
-  uint64_t pid_value_len = my_uint64_len(info.pid);
-  my_uint64tos(linkpath + sizeof("/proc/") - 1, info.pid, pid_value_len);
-  linkpath[sizeof("/proc/") - 1 + pid_value_len] = '\0';
-  my_strlcat(linkpath, "/exe", sizeof(linkpath));
-
-  const int kMaxSize = 4096;
-  char* link = reinterpret_cast<char*>(allocator->Alloc(kMaxSize));
-  if (link) {
-    ssize_t size = readlink(linkpath, link, kMaxSize);
-    if (size < kMaxSize && size > 0) {
-      // readlink(2) doesn't add a terminating NUL, so do it now.
-      link[size] = '\0';
-
-      const char* name = my_strrchr(link, '/');
-      if (name)
-        return name + 1;
-      return link;
-    }
-  }
-  // Either way too long, or a read error.
-  return "chrome-crash-unknown-process";
-}
-#endif
-
-void HandleCrashDump(const BreakpadInfo& info) {
-  int dumpfd;
-  bool keep_fd = false;
-  size_t dump_size;
-  uint8_t* dump_data;
-  google_breakpad::PageAllocator allocator;
-  const char* exe_buf = nullptr;
-
-  if (GetCrashReporterClient()->HandleCrashDump(info.filename)) {
-    return;
-  }
-
-#if defined(OS_CHROMEOS)
-  // Grab the crashing process' name now, when it should still be available.
-  // If we try to do this later in our grandchild the crashing process has
-  // already terminated.
-  exe_buf = GetCrashingProcessName(info, &allocator);
-#endif
-
-  if (info.fd != -1) {
-    // Dump is provided with an open FD.
-    keep_fd = true;
-    dumpfd = info.fd;
-
-    // The FD is pointing to the end of the file.
-    // Rewind, we'll read the data next.
-    if (lseek(dumpfd, 0, SEEK_SET) == -1) {
-      static const char msg[] = "Cannot upload crash dump: failed to "
-          "reposition minidump FD\n";
-      WriteLog(msg, sizeof(msg) - 1);
-      IGNORE_RET(sys_close(dumpfd));
-      return;
-    }
-    LoadDataFromFD(allocator, info.fd, false, &dump_data, &dump_size);
-  } else {
-    // Dump is provided with a path.
-    keep_fd = false;
-    LoadDataFromFile(allocator, info.filename, &dumpfd, &dump_data, &dump_size);
-  }
-
-  // TODO(jcivelli): make log work when using FDs.
-#if defined(ADDRESS_SANITIZER)
-  int logfd;
-  size_t log_size;
-  uint8_t* log_data;
-  // Load the AddressSanitizer log into log_data.
-  LoadDataFromFile(allocator, info.log_filename, &logfd, &log_data, &log_size);
-#endif
-
-  // We need to build a MIME block for uploading to the server. Since we are
-  // going to fork and run wget, it needs to be written to a temp file.
-  const int ufd = sys_open("/dev/urandom", O_RDONLY, 0);
-  if (ufd < 0) {
-    static const char msg[] = "Cannot upload crash dump because /dev/urandom"
-                              " is missing\n";
-    WriteLog(msg, sizeof(msg) - 1);
-    return;
-  }
-
-  static const char temp_file_template[] =
-      "/tmp/chromium-upload-XXXXXXXXXXXXXXXX";
-  char temp_file[sizeof(temp_file_template)];
-  int temp_file_fd = -1;
-  if (keep_fd) {
-    temp_file_fd = dumpfd;
-    // Rewind the destination, we are going to overwrite it.
-    if (lseek(dumpfd, 0, SEEK_SET) == -1) {
-      static const char msg[] = "Cannot upload crash dump: failed to "
-          "reposition minidump FD (2)\n";
-      WriteLog(msg, sizeof(msg) - 1);
-      IGNORE_RET(sys_close(dumpfd));
-      return;
-    }
-  } else {
-    if (info.upload) {
-      my_memcpy(temp_file, temp_file_template, sizeof(temp_file_template));
-
-      for (unsigned i = 0; i < 10; ++i) {
-        uint64_t t;
-        sys_read(ufd, &t, sizeof(t));
-        write_uint64_hex(temp_file + sizeof(temp_file) - (16 + 1), t);
-
-        temp_file_fd = sys_open(temp_file, O_WRONLY | O_CREAT | O_EXCL, 0600);
-        if (temp_file_fd >= 0)
-          break;
-      }
-
-      if (temp_file_fd < 0) {
-        static const char msg[] = "Failed to create temporary file in /tmp: "
-            "cannot upload crash dump\n";
-        WriteLog(msg, sizeof(msg) - 1);
-        IGNORE_RET(sys_close(ufd));
-        return;
-      }
-    } else {
-      temp_file_fd = sys_open(info.filename, O_WRONLY, 0600);
-      if (temp_file_fd < 0) {
-        static const char msg[] = "Failed to save crash dump: failed to open\n";
-        WriteLog(msg, sizeof(msg) - 1);
-        IGNORE_RET(sys_close(ufd));
-        return;
-      }
-    }
-  }
-
-  // The MIME boundary is 28 hyphens, followed by a 64-bit nonce and a NUL.
-  char mime_boundary[28 + 16 + 1];
-  my_memset(mime_boundary, '-', 28);
-  uint64_t boundary_rand;
-  sys_read(ufd, &boundary_rand, sizeof(boundary_rand));
-  write_uint64_hex(mime_boundary + 28, boundary_rand);
-  mime_boundary[28 + 16] = 0;
-  IGNORE_RET(sys_close(ufd));
-
-  // The MIME block looks like this:
-  //   BOUNDARY \r\n
-  //   Content-Disposition: form-data; name="prod" \r\n \r\n
-  //   Chrome_Linux \r\n
-  //   BOUNDARY \r\n
-  //   Content-Disposition: form-data; name="ver" \r\n \r\n
-  //   1.2.3.4 \r\n
-  //   BOUNDARY \r\n
-  //
-  //   zero or one:
-  //   Content-Disposition: form-data; name="ptime" \r\n \r\n
-  //   abcdef \r\n
-  //   BOUNDARY \r\n
-  //
-  //   zero or one:
-  //   Content-Disposition: form-data; name="ptype" \r\n \r\n
-  //   abcdef \r\n
-  //   BOUNDARY \r\n
-  //
-  //   zero or one:
-  //   Content-Disposition: form-data; name="lsb-release" \r\n \r\n
-  //   abcdef \r\n
-  //   BOUNDARY \r\n
-  //
-  //   zero or one:
-  //   Content-Disposition: form-data; name="oom-size" \r\n \r\n
-  //   1234567890 \r\n
-  //   BOUNDARY \r\n
-  //
-  //   zero or more (up to CrashKeyStorage::num_entries = 64):
-  //   Content-Disposition: form-data; name=crash-key-name \r\n
-  //   crash-key-value \r\n
-  //   BOUNDARY \r\n
-  //
-  //   Content-Disposition: form-data; name="dump"; filename="dump" \r\n
-  //   Content-Type: application/octet-stream \r\n \r\n
-  //   <dump contents>
-  //   \r\n BOUNDARY -- \r\n
-
-#if defined(OS_CHROMEOS)
-  CrashReporterWriter writer(temp_file_fd);
-#else
-  MimeWriter writer(temp_file_fd, mime_boundary);
-#endif
-  {
-    const char* product_name = "";
-    const char* version = "";
-
-    GetCrashReporterClient()->GetProductNameAndVersion(&product_name, &version);
-
-    writer.AddBoundary();
-    writer.AddPairString("prod", product_name);
-    writer.AddBoundary();
-    writer.AddPairString("ver", version);
-    writer.AddBoundary();
-    if (info.pid > 0) {
-      char pid_value_buf[kUint64StringSize];
-      uint64_t pid_value_len = my_uint64_len(info.pid);
-      my_uint64tos(pid_value_buf, info.pid, pid_value_len);
-      static const char pid_key_name[] = "pid";
-      writer.AddPairData(pid_key_name, sizeof(pid_key_name) - 1,
-                         pid_value_buf, pid_value_len);
-      writer.AddBoundary();
-    }
-#if defined(OS_ANDROID)
-    // Addtional MIME blocks are added for logging on Android devices.
-    static const char android_build_id[] = "android_build_id";
-    static const char android_build_fp[] = "android_build_fp";
-    static const char device[] = "device";
-    static const char model[] = "model";
-    static const char brand[] = "brand";
-    static const char exception_info[] = "exception_info";
-
-    base::android::BuildInfo* android_build_info =
-        base::android::BuildInfo::GetInstance();
-    writer.AddPairString(
-        android_build_id, android_build_info->android_build_id());
-    writer.AddBoundary();
-    writer.AddPairString(
-        android_build_fp, android_build_info->android_build_fp());
-    writer.AddBoundary();
-    writer.AddPairString(device, android_build_info->device());
-    writer.AddBoundary();
-    writer.AddPairString(model, android_build_info->model());
-    writer.AddBoundary();
-    writer.AddPairString(brand, android_build_info->brand());
-    writer.AddBoundary();
-    if (android_build_info->java_exception_info() != nullptr) {
-      writer.AddPairString(exception_info,
-                           android_build_info->java_exception_info());
-      writer.AddBoundary();
-    }
-#endif
-    writer.Flush();
-  }
-
-  if (info.process_start_time > 0) {
-    struct kernel_timeval tv;
-    if (!sys_gettimeofday(&tv, nullptr)) {
-      uint64_t time = kernel_timeval_to_ms(&tv);
-      if (time > info.process_start_time) {
-        time -= info.process_start_time;
-        char time_str[kUint64StringSize];
-        const unsigned time_len = my_uint64_len(time);
-        my_uint64tos(time_str, time, time_len);
-
-        static const char process_time_msg[] = "ptime";
-        writer.AddPairData(process_time_msg, sizeof(process_time_msg) - 1,
-                           time_str, time_len);
-        writer.AddBoundary();
-        writer.Flush();
-      }
-    }
-  }
-
-  if (info.process_type_length) {
-    writer.AddPairString("ptype", info.process_type);
-    writer.AddBoundary();
-    writer.Flush();
-  }
-
-  if (info.distro_length) {
-    static const char distro_msg[] = "lsb-release";
-    writer.AddPairString(distro_msg, info.distro);
-    writer.AddBoundary();
-    writer.Flush();
-  }
-
-  if (info.oom_size) {
-    char oom_size_str[kUint64StringSize];
-    const unsigned oom_size_len = my_uint64_len(info.oom_size);
-    my_uint64tos(oom_size_str, info.oom_size, oom_size_len);
-    static const char oom_size_msg[] = "oom-size";
-    writer.AddPairData(oom_size_msg, sizeof(oom_size_msg) - 1,
-                       oom_size_str, oom_size_len);
-    writer.AddBoundary();
-    writer.Flush();
-  }
-
-  if (info.crash_keys) {
-    CrashKeyStorage::Iterator crash_key_iterator(*info.crash_keys);
-    const CrashKeyStorage::Entry* entry;
-    while ((entry = crash_key_iterator.Next())) {
-      writer.AddPairString(entry->key, entry->value);
-      writer.AddBoundary();
-      writer.Flush();
-    }
-  }
-
-  writer.AddFileContents(g_dump_msg, dump_data, dump_size);
-#if defined(ADDRESS_SANITIZER)
-  // Append a multipart boundary and the contents of the AddressSanitizer log.
-  writer.AddBoundary();
-  writer.AddFileContents(g_log_msg, log_data, log_size);
-#endif
-  writer.AddEnd();
-  writer.Flush();
-
-  IGNORE_RET(sys_close(temp_file_fd));
-
-#if defined(OS_ANDROID)
-  if (info.filename) {
-    size_t filename_length = my_strlen(info.filename);
-
-    // If this was a file, we need to copy it to the right place and use the
-    // right file name so it gets uploaded by the browser.
-    const char msg[] = "Output crash dump file:";
-    WriteLog(msg, sizeof(msg) - 1);
-    WriteLog(info.filename, filename_length);
-
-    char pid_buf[kUint64StringSize];
-    size_t pid_str_length = my_uint64_len(info.pid);
-    my_uint64tos(pid_buf, info.pid, pid_str_length);
-    pid_buf[pid_str_length] = 0;  // my_uint64tos() doesn't null-terminate.
-
-    size_t done_filename_len = filename_length + pid_str_length + 1;
-    char* done_filename = reinterpret_cast<char*>(
-        allocator.Alloc(done_filename_len));
-    // Rename the file such that the pid is the suffix in order signal to other
-    // processes that the minidump is complete. The advantage of using the pid
-    // as the suffix is that it is trivial to associate the minidump with the
-    // crashed process.
-    my_strlcpy(done_filename, info.filename, done_filename_len);
-    my_strlcat(done_filename, pid_buf, done_filename_len);
-    // Rename the minidump file to signal that it is complete.
-    if (rename(info.filename, done_filename)) {
-      const char failed_msg[] = "Failed to rename:";
-      WriteLog(failed_msg, sizeof(failed_msg) - 1);
-      WriteLog(info.filename, filename_length);
-      const char to_msg[] = "to";
-      WriteLog(to_msg, sizeof(to_msg) - 1);
-      WriteLog(done_filename, done_filename_len - 1);
-    }
-  }
-#endif
-
-  if (!info.upload)
-    return;
-
-  const pid_t child = sys_fork();
-  if (!child) {
-    // Spawned helper process.
-    //
-    // This code is called both when a browser is crashing (in which case,
-    // nothing really matters any more) and when a renderer/plugin crashes, in
-    // which case we need to continue.
-    //
-    // Since we are a multithreaded app, if we were just to fork(), we might
-    // grab file descriptors which have just been created in another thread and
-    // hold them open for too long.
-    //
-    // Thus, we have to loop and try and close everything.
-    const int fd = sys_open("/proc/self/fd", O_DIRECTORY | O_RDONLY, 0);
-    if (fd < 0) {
-      for (unsigned i = 3; i < 8192; ++i)
-        IGNORE_RET(sys_close(i));
-    } else {
-      google_breakpad::DirectoryReader reader(fd);
-      const char* name;
-      while (reader.GetNextEntry(&name)) {
-        int i;
-        if (my_strtoui(&i, name) && i > 2 && i != fd)
-          IGNORE_RET(sys_close(i));
-        reader.PopEntry();
-      }
-
-      IGNORE_RET(sys_close(fd));
-    }
-
-    IGNORE_RET(sys_setsid());
-
-    // Leave one end of a pipe in the upload process and watch for it getting
-    // closed by the upload process exiting.
-    int fds[2];
-    if (sys_pipe(fds) >= 0) {
-      const pid_t upload_child = sys_fork();
-      if (!upload_child) {
-        // Upload process.
-        IGNORE_RET(sys_close(fds[0]));
-        IGNORE_RET(sys_dup2(fds[1], 3));
-        ExecUploadProcessOrTerminate(info, temp_file, mime_boundary, exe_buf,
-                                     &allocator);
-      }
-
-      // Helper process.
-      if (upload_child > 0) {
-        IGNORE_RET(sys_close(fds[1]));
-
-        const size_t kCrashIdLength = 16;
-        char id_buf[kCrashIdLength + 1];
-        size_t bytes_read =
-            WaitForCrashReportUploadProcess(fds[0], kCrashIdLength, id_buf);
-        HandleCrashReportId(id_buf, bytes_read, kCrashIdLength);
-
-        if (sys_waitpid(upload_child, nullptr, WNOHANG) == 0) {
-          // Upload process is still around, kill it.
-          sys_kill(upload_child, SIGKILL);
-        }
-      }
-    }
-
-    // Helper process.
-    IGNORE_RET(sys_unlink(info.filename));
-#if defined(ADDRESS_SANITIZER)
-    IGNORE_RET(sys_unlink(info.log_filename));
-#endif
-    IGNORE_RET(sys_unlink(temp_file));
-    sys__exit(0);
-  }
-
-  // Main browser process.
-  if (child <= 0)
-    return;
-  (void) HANDLE_EINTR(sys_waitpid(child, nullptr, 0));
-}
-
-void InitCrashReporter(const std::string& process_type) {
-#if defined(OS_ANDROID)
-  // This will guarantee that the BuildInfo has been initialized and subsequent
-  // calls will not require memory allocation.
-  base::android::BuildInfo::GetInstance();
-
-  // Handler registration is LIFO. Install the microdump handler first, such
-  // that if conventional minidump crash reporting is enabled below, it takes
-  // precedence (i.e. its handler is run first) over the microdump handler.
-  InitMicrodumpCrashHandlerIfNecessary(process_type);
-#endif
-  // Determine the process type and take appropriate action.
-  const base::CommandLine& parsed_command_line =
-      *base::CommandLine::ForCurrentProcess();
-  if (parsed_command_line.HasSwitch(switches::kDisableBreakpad))
-    return;
-
-  if (process_type.empty()) {
-    bool enable_breakpad = GetCrashReporterClient()->GetCollectStatsConsent() ||
-                           GetCrashReporterClient()->IsRunningUnattended();
-    enable_breakpad &=
-        !parsed_command_line.HasSwitch(switches::kDisableBreakpad);
-    if (!enable_breakpad) {
-      enable_breakpad = parsed_command_line.HasSwitch(
-          switches::kEnableCrashReporterForTesting);
-    }
-    if (!enable_breakpad) {
-      VLOG(1) << "Breakpad disabled";
-      return;
-    }
-
-    InitCrashKeys();
-    EnableCrashDumping(GetCrashReporterClient()->IsRunningUnattended());
-  } else if (GetCrashReporterClient()->EnableBreakpadForProcess(process_type)) {
-#if defined(OS_ANDROID)
-    NOTREACHED() << "Breakpad initialized with InitCrashReporter() instead of "
-      "InitNonBrowserCrashReporter in " << process_type << " process.";
-    return;
-#else
-    // We might be chrooted in a zygote or renderer process so we cannot call
-    // GetCollectStatsConsent because that needs access the the user's home
-    // dir. Instead, we set a command line flag for these processes.
-    // Even though plugins are not chrooted, we share the same code path for
-    // simplicity.
-    if (!parsed_command_line.HasSwitch(switches::kEnableCrashReporter))
-      return;
-    InitCrashKeys();
-    SetClientIdFromCommandLine(parsed_command_line);
-    EnableNonBrowserCrashDumping();
-    VLOG(1) << "Non Browser crash dumping enabled for: " << process_type;
-#endif  // #if defined(OS_ANDROID)
-  }
-
-  PostEnableBreakpadInitialization();
-}
-
-#if defined(OS_ANDROID)
-void InitNonBrowserCrashReporterForAndroid(const std::string& process_type) {
-  const base::CommandLine* command_line =
-      base::CommandLine::ForCurrentProcess();
-
-  // Handler registration is LIFO. Install the microdump handler first, such
-  // that if conventional minidump crash reporting is enabled below, it takes
-  // precedence (i.e. its handler is run first) over the microdump handler.
-  InitMicrodumpCrashHandlerIfNecessary(process_type);
-
-  if (command_line->HasSwitch(switches::kEnableCrashReporter)) {
-    // On Android we need to provide a FD to the file where the minidump is
-    // generated as the renderer and browser run with different UIDs
-    // (preventing the browser from inspecting the renderer process).
-    int minidump_fd = base::GlobalDescriptors::GetInstance()->MaybeGet(
-        GetCrashReporterClient()->GetAndroidMinidumpDescriptor());
-    if (minidump_fd < 0) {
-      NOTREACHED() << "Could not find minidump FD, crash reporting disabled.";
-    } else {
-      InitCrashKeys();
-      EnableNonBrowserCrashDumping(process_type, minidump_fd);
-    }
-  }
-}
-#endif  // OS_ANDROID
-
-bool IsCrashReporterEnabled() {
-  return g_is_crash_reporter_enabled;
-}
-
-}  // namespace breakpad