Breakpad Linux: Add some debug logging for crash id generation failures.

components/crash/app/breakpad_linux.cc

 // 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/app/breakpad_linux.h"
 
 #include <fcntl.h>
@@ skipping 1064 matching lines @@
   return true;
 #endif
 }
 
 // |buf| should be |expected_len| + 1 characters in size and NULL 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[] = "Crash_reporter failed to process crash report";

[vapier, 2014/09/19 16:14:23]

might rephrase this to:

 system crash-reporter failed to process crash report

[Lei Zhang, 2014/09/19 18:26:09]

Done.

 #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);
@@ skipping 507 matching lines @@
     }
   }
 }
 #endif  // OS_ANDROID
 
 bool IsCrashReporterEnabled() {
   return g_is_crash_reporter_enabled;
 }
 
 }  // namespace breakpad