This adds some plumbing for propagating the status and error code of a renderer process that went away so that we can tell at the UI level what happened to the tab: did it crash, or was it killed by the OOM killer (or some other reason). This is in preparation for implementing a new UI for when a process is killed by the OOM on ChromeOS which handles it differently from a crash.

Most of the changes are modifications of the argument list to include a status and error code for the exited process, but in addition the following was done:

- Changed the name of DidProcessCrash to GetTerminationStatus.
- Added TerminationStatus enum in process_util.h, so it can be used as the status returned by GetTerminationStatus.
- Improved process_util_unittest to actually test for crashing and terminated processes on all platforms.
- Added a new notification for renderers that were killed.
- Added error code information to crash notification.
- Added status and error code information to renderer IPC message for RenderViewGone.
- Added a UMA histogram count for number of renderer kills.

BUG=http://crosbug.com/8505
TEST=ran new unit test. Test passes on try servers.

Review URL: http://codereview.chromium.org/5172009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@69082 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 5 insertions, 2 deletions

diff --git a/chrome/browser/child_process_launcher.h b/chrome/browser/child_process_launcher.h
index 95fb6ea..a3add53 100644
--- a/chrome/browser/child_process_launcher.h
+++ b/chrome/browser/child_process_launcher.h
@@ -50,8 +50,11 @@ class ChildProcessLauncher {
   // Getter for the process handle.  Only call after the process has started.
   base::ProcessHandle GetHandle();
 
-  // Call this when the process exits to know if a process crashed or not.
-  bool DidProcessCrash();
+  // Call this when the child process exits to know what happened to
+  // it.  |exit_code| is the exit code of the process if it exited
+  // (e.g. status from waitpid if on posix, from GetExitCodeProcess on
+  // Windows). |exit_code| may be NULL.
+  base::TerminationStatus GetChildTerminationStatus(int* exit_code);
 
   // Changes whether the process runs in the background or not.  Only call
   // this after the process has started.