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 some new enum values to TerminationStatus enum (and named it)
in process_util.h, so it can be used as the status returned by
WhatHappenedToProcess.
- 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.

[This change was previously reviewed and LGTM'd:
http://codereview.chromium.org/3386014/show
but due to issues with "git cl push" was never committed to the tree.]

BUG=none
TEST=ran new unit test. Test passes on try servers.

Review URL: http://codereview.chromium.org/3869001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@63067 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 2 deletions

diff --git a/chrome/browser/utility_process_host.h b/chrome/browser/utility_process_host.h
index 48d5e38..da2a05a 100644
--- a/chrome/browser/utility_process_host.h
+++ b/chrome/browser/utility_process_host.h
@@ -39,7 +39,7 @@ class UtilityProcessHost : public BrowserChildProcessHost {
     Client() {}
 
     // Called when the process has crashed.
-    virtual void OnProcessCrashed() {}
+    virtual void OnProcessCrashed(int exit_code) {}
 
     // Called when the extension has unpacked successfully.  |manifest| is the
     // parsed manifest.json file.  |catalogs| contains list of all parsed
@@ -153,7 +153,7 @@ class UtilityProcessHost : public BrowserChildProcessHost {
   void OnMessageReceived(const IPC::Message& message);
 
   // BrowserChildProcessHost:
-  virtual void OnProcessCrashed();
+  virtual void OnProcessCrashed(int exit_code);
   virtual bool CanShutdown() { return true; }
   virtual URLRequestContext* GetRequestContext(
       uint32 request_id,