[Linux] Implement the crash key logging mechanism.

chrome/app/breakpad_linux_impl.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 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.
 
-#ifndef CHROME_APP_BREAKPAD_LINUX_H_
-#define CHROME_APP_BREAKPAD_LINUX_H_
+// Internal header file for the Linux breakpad implementation. This file is
+// shared between crash_handler_host_linux.cc and breakpad_linux.cc. It should
+// only be used in files compiled with linux_breakpad=1.
+
+#ifndef CHROME_APP_BREAKPAD_LINUX_IMPL_H_
+#define CHROME_APP_BREAKPAD_LINUX_IMPL_H_
 
 #include <sys/types.h>
 
 #include "base/basictypes.h"
+#include "breakpad/src/common/simple_string_dictionary.h"
+#include "chrome/app/breakpad_linux.h"
 
-extern void InitCrashReporter();
-#if defined(OS_ANDROID)
-extern void InitNonBrowserCrashReporterForAndroid();
-#endif
-bool IsCrashReporterEnabled();
+typedef google_breakpad::NonAllocatingMap<256, 256, 64> CrashKeyStorage;
 
 static const size_t kMaxActiveURLSize = 1024;
 static const size_t kGuidSize = 32;  // 128 bits = 32 chars in hex.
 static const size_t kDistroSize = 128;
 #if defined(ADDRESS_SANITIZER)
 static const size_t kMaxAsanReportSize = 1 << 16;
 #endif
 // Define a preferred limit on minidump sizes, because Crash Server currently
 // throws away any larger than 1.2MB (1.2 * 1024 * 1024).  A value of -1 means
 // no limit.
 static const off_t kMaxMinidumpFileSize = 1258291;
 
+// The size of the iovec used to transfer crash data from a child back to the
+// browser.
+#if !defined(ADDRESS_SANITIZER)
+const size_t kCrashIovSize = 9;
+#else
+// Additional field to pass the AddressSanitizer log to the crash handler.
+const size_t kCrashIovSize = 10;
+#endif
+
 // BreakpadInfo describes a crash report.
 // The minidump information can either be contained in a file descriptor (fd) or
 // in a file (whose path is in filename).
 struct BreakpadInfo {
   int fd;                          // File descriptor to the Breakpad dump data.
   const char* filename;            // Path to the Breakpad dump data.
 #if defined(ADDRESS_SANITIZER)
   const char* log_filename;        // Path to the ASan log file.
   const char* asan_report_str;     // ASan report.
   unsigned asan_report_length;     // Length of |asan_report_length|.
 #endif
   const char* process_type;        // Process type, e.g. "renderer".
   unsigned process_type_length;    // Length of |process_type|.
   const char* crash_url;           // Active URL in the crashing process.
   unsigned crash_url_length;       // Length of |crash_url|.
   const char* guid;                // Client ID.
   unsigned guid_length;            // Length of |guid|.
   const char* distro;              // Linux distro string.
   unsigned distro_length;          // Length of |distro|.
   bool upload;                     // Whether to upload or save crash dump.
   uint64_t process_start_time;     // Uptime of the crashing process.
   size_t oom_size;                 // Amount of memory requested if OOM.
   uint64_t pid;                    // PID where applicable.
+  CrashKeyStorage* crash_keys;
 };
 
 extern void HandleCrashDump(const BreakpadInfo& info);
 
-#endif  // CHROME_APP_BREAKPAD_LINUX_H_
+#endif  // CHROME_APP_BREAKPAD_LINUX_IMPL_H_