Reland: Added a debug info UI for Blimp

blimp/client/app/android/blimp_client_session_android.h

 // Copyright 2015 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 BLIMP_CLIENT_APP_ANDROID_BLIMP_CLIENT_SESSION_ANDROID_H_
 #define BLIMP_CLIENT_APP_ANDROID_BLIMP_CLIENT_SESSION_ANDROID_H_
 
 #include "base/android/jni_android.h"
+#include "base/android/jni_array.h"
 #include "base/macros.h"
 #include "blimp/client/session/blimp_client_session.h"
 
 namespace blimp {
 namespace client {
 
 class AssignmentSource;
 
 class BlimpClientSessionAndroid : public BlimpClientSession {
  public:
   static bool RegisterJni(JNIEnv* env);
   static BlimpClientSessionAndroid* FromJavaObject(JNIEnv* env, jobject jobj);
 
   BlimpClientSessionAndroid(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& jobj,
       const base::android::JavaParamRef<jstring>& jassigner_url);
 
   // Methods called from Java via JNI.
   // |jclient_auth_token| is an OAuth2 access token created by GoogleAuthUtil.
   // See BlimpClientSession::Connect() for more information.
   void Connect(JNIEnv* env,
                const base::android::JavaParamRef<jobject>& jobj,
                const base::android::JavaParamRef<jstring>& jclient_auth_token);
 
   void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& jobj);
 
+  // Returns an integer array to Java representing blimp debug statistics which
+  // contain bytes received, bytes sent, number of commits in order.
+  base::android::ScopedJavaLocalRef<jintArray> GetDebugInfo(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& jobj);
+
  private:
   ~BlimpClientSessionAndroid() override;
 
   // BlimpClientSession implementation.
   void OnAssignmentConnectionAttempted(AssignmentSource::Result result,
                                        const Assignment& assignment) override;
 
   // NetworkEventObserver implementation.
   void OnConnected() override;
   void OnDisconnected(int error_code) override;
 
   // Reference to the Java object which owns this class.
   base::android::ScopedJavaGlobalRef<jobject> java_obj_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpClientSessionAndroid);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_APP_ANDROID_BLIMP_CLIENT_SESSION_ANDROID_H_