Re-land "Add stats to distinguish android renderer crashes."

base/android/application_status_listener.h

 // Copyright 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 BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_
 #define BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/singleton.h"
 #include "base/observer_list_threadsafe.h"
 
 namespace base {
 namespace android {
 
 // Define application state values like APPLICATION_STATE_VISIBLE in a
 // way that ensures they're always the same than their Java counterpart.
 //
 // Note that these states represent the most visible Activity state.
 // If there are activities with states paused and stopped, only
 // HAS_PAUSED_ACTIVITIES should be returned.
 //
 // A Java counterpart will be generated for this enum.
 // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.base
 enum ApplicationState {
+  APPLICATION_STATE_UNKNOWN = 0,
   APPLICATION_STATE_HAS_RUNNING_ACTIVITIES = 1,
   APPLICATION_STATE_HAS_PAUSED_ACTIVITIES = 2,
   APPLICATION_STATE_HAS_STOPPED_ACTIVITIES = 3,
   APPLICATION_STATE_HAS_DESTROYED_ACTIVITIES = 4
 };
 
 // A native helper class to listen to state changes of the Android
 // Application. This mirrors org.chromium.base.ApplicationStatus.
 // any thread.
 //
@@ skipping 26 matching lines @@
   explicit ApplicationStatusListener(
       const ApplicationStateChangeCallback& callback);
   ~ApplicationStatusListener();
 
   // Internal use: must be public to be called from base_jni_registrar.cc
   static bool RegisterBindings(JNIEnv* env);
 
   // Internal use only: must be public to be called from JNI and unit tests.
   static void NotifyApplicationStateChange(ApplicationState state);
 
+  // Expose jni call for ApplicationStatus.getStateForApplication.
+  static ApplicationState GetState();
+
  private:
   void Notify(ApplicationState state);
 
   ApplicationStateChangeCallback callback_;
 
   DISALLOW_COPY_AND_ASSIGN(ApplicationStatusListener);
 };
 
 }  // namespace android
 }  // namespace base
 
 #endif  // BASE_ANDROID_APPLICATION_STATUS_LISTENER_H_