[Linux] Implement the crash key logging mechanism.

chrome/app/breakpad_linux_impl.h

Index: chrome/app/breakpad_linux_impl.h
diff --git a/chrome/app/breakpad_linux.h b/chrome/app/breakpad_linux_impl.h
similarity index 69%
copy from chrome/app/breakpad_linux.h
copy to chrome/app/breakpad_linux_impl.h
index 8f469261c45947d7e6d85487ecaf18a44b9c3d9c..30125300336824b0cb137c295effcb109f8ce977 100644
--- a/chrome/app/breakpad_linux.h
+++ b/chrome/app/breakpad_linux_impl.h
@@ -1,19 +1,21 @@
-// 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.
@@ -26,6 +28,15 @@ static const size_t kMaxAsanReportSize = 1 << 16;
 // 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).
@@ -49,8 +60,9 @@ struct BreakpadInfo {
   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_