Restructure contents of blimp/client.

blimp/client/android/java/src/org/chromium/blimp/session/BlimpClientSession.java

-// 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.
-
-package org.chromium.blimp.session;
-
-import org.chromium.base.annotations.CalledByNative;
-import org.chromium.base.annotations.JNINamespace;
-
-/**
- * The Java representation of a native BlimpClientSession.  This is primarily used to provide access
- * to the native session methods and to facilitate passing a BlimpClientSession object between Java
- * classes with native counterparts.
- */
-@JNINamespace("blimp::client")
-public class BlimpClientSession {
-    private long mNativeBlimpClientSessionAndroidPtr;
-
-    public BlimpClientSession() {
-        mNativeBlimpClientSessionAndroidPtr = nativeInit();
-    }
-
-    /**
-     * Destroys the native BlimpClientSession.  This class should not be used after this is called.
-     */
-    public void destroy() {
-        if (mNativeBlimpClientSessionAndroidPtr == 0) return;
-
-        nativeDestroy(mNativeBlimpClientSessionAndroidPtr);
-        mNativeBlimpClientSessionAndroidPtr = 0;
-    }
-
-    // Methods that are called by native via JNI.
-    @CalledByNative
-    private long getNativePtr() {
-        assert mNativeBlimpClientSessionAndroidPtr != 0;
-        return mNativeBlimpClientSessionAndroidPtr;
-    }
-
-    private native long nativeInit();
-    private native void nativeDestroy(long nativeBlimpClientSessionAndroid);
-}