Distinguish plugin disconnections from plugin crashes.

webkit/plugins/ppapi/plugin_delegate.h

Index: webkit/plugins/ppapi/plugin_delegate.h
diff --git a/webkit/plugins/ppapi/plugin_delegate.h b/webkit/plugins/ppapi/plugin_delegate.h
index 665c8028f20eaf84314c02f243c2e9b79ab1e060..6559f6841430882e387ceb47a26db5f0e6e9737b 100644
--- a/webkit/plugins/ppapi/plugin_delegate.h
+++ b/webkit/plugins/ppapi/plugin_delegate.h
@@ -12,6 +12,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/message_loop_proxy.h"
 #include "base/platform_file.h"
+#include "base/process.h"
 #include "base/shared_memory.h"
 #include "base/sync_socket.h"
 #include "base/time.h"
@@ -154,6 +155,8 @@ class PluginDelegate {
     // regular instance shutdown so the out-of-process code can clean up its
     // tracking information.
     virtual void RemoveInstance(PP_Instance instance) = 0;
+
+    virtual base::ProcessId GetPeerProcessId() = 0;
   };
 
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