This adds some plumbing for propagating the reason for a renderer's death

chrome/common/result_codes.h

Index: chrome/common/result_codes.h
diff --git a/chrome/common/result_codes.h b/chrome/common/result_codes.h
index 6625cb09b54818dab07a6e262c4b1c42831c5052..80047d6c11ca52fea2bf20fc103516e104e5ab74 100644
--- a/chrome/common/result_codes.h
+++ b/chrome/common/result_codes.h
@@ -21,9 +21,9 @@
 class ResultCodes {
  public:
   enum ExitCode {
-    NORMAL_EXIT = base::PROCESS_END_NORMAL_TERMINATION,
-    TASKMAN_KILL = base::PROCESS_END_KILLED_BY_USER,
-    HUNG = base::PROCESS_END_PROCESS_WAS_HUNG,
+    NORMAL_EXIT = base::EXIT_CODE_NORMAL_TERMINATION,
+    TASKMAN_KILL = base::EXIT_CODE_PROCESS_WAS_KILLED,
+    HUNG = base::EXIT_CODE_PROCESS_WAS_HUNG,
     INVALID_CMDLINE_URL,        // An invalid command line url was given.
     SBOX_INIT_FAILED,           // The sandbox could not be initialized.
     GOOGLE_UPDATE_INIT_FAILED,  // The Google Update client stub init failed.