Don't report exit funnels for live processes.

components/browser_watcher/exit_funnel_win.h

 // Copyright (c) 2014 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.
 
 #ifndef COMPONENTS_BROWSER_WATCHER_EXIT_FUNNEL_WIN_H_
 #define COMPONENTS_BROWSER_WATCHER_EXIT_FUNNEL_WIN_H_
 
 #include "base/macros.h"
 #include "base/process/process_handle.h"
 #include "base/strings/string16.h"
+#include "base/time/time.h"
 #include "base/win/registry.h"
 
 namespace browser_watcher {
 
 // A wrapper class that takes care of persistently recording a trace of named,
 // timed events in registry, associated with a process instance. This allows
 // reconstructing and reporting an event trace on a subsequent launch.
 // The event trace is stored in registry under a new key named
 // <pid>-<uniquifier>, where each event is a value named after the event, with
 // an associated QWORD value noting the event time.
 class ExitFunnel {
  public:
   ExitFunnel();
   ~ExitFunnel();
 
   // Initializes the exit funnel with |registry_path| and |process|.
   // |process| must be open for PROCESS_QUERY_INFORMATION at least.
   // Returns false on failure to create or open the registry path corresponding
   // to |process|.
   bool Init(const base::char16* registry_path, base::ProcessHandle process);
 
+  // Initializes the exit funnel with |registry_path|, |pid| and
+  // |creation_time|.
+  // Returns false on failure to create or open the registry path corresponding
+  // to |process|.
+  // Exposed for testing.
+  bool InitImpl(const base::char16* registry_path,
+                base::ProcessId pid,
+                base::Time creation_time);
+
   // Records |event_name| at the current time in the registry for the process
   // this instance is associated with. Returns false on failure to record the
   // event.
   bool RecordEvent(const base::char16* event_name);
 
   // Records |event_name| at the current time in the registry at |registry_path|
   // for this process.
   static bool RecordSingleEvent(const base::char16* registry_path,
                                 const base::char16* event_name);
 
  private:
   base::win::RegKey key_;
 
   DISALLOW_COPY_AND_ASSIGN(ExitFunnel);
 };
 
 }  // namespace browser_watcher
 
 #endif  // COMPONENTS_BROWSER_WATCHER_EXIT_FUNNEL_WIN_H_