Remove all blimp client code.

blimp/client/app/android/javatests/src/org/chromium/blimp/core/settings/MockPreferences.java

Index: blimp/client/app/android/javatests/src/org/chromium/blimp/core/settings/MockPreferences.java
diff --git a/blimp/client/app/android/javatests/src/org/chromium/blimp/core/settings/MockPreferences.java b/blimp/client/app/android/javatests/src/org/chromium/blimp/core/settings/MockPreferences.java
deleted file mode 100644
index cb5f384d007e7038b344f4d699a8227419e7af81..0000000000000000000000000000000000000000
--- a/blimp/client/app/android/javatests/src/org/chromium/blimp/core/settings/MockPreferences.java
+++ /dev/null
@@ -1,50 +0,0 @@
-// Copyright 2016 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.core.settings;
-
-import android.app.Activity;
-import android.app.FragmentManager;
-import android.os.Bundle;
-import android.preference.PreferenceFragment;
-import android.preference.PreferenceScreen;
-
-/**
- * Activity to hold {@link MockMainPreferences}.
- */
-public class MockPreferences extends Activity {
-
-    public static final String FRAGMENT_TAG = "TestMainPref";
-
-    /** Mock {@link MainPreferences} in Clank, this is a PreferenceFragment that holds a list of
-     * sub preferences items, including AboutBlimpPreferences.
-     */
-    @SuppressWarnings("javadoc")
-    public static class MockMainPreferences extends PreferenceFragment {
-        @Override
-        public void onCreate(Bundle savedInstanceState) {
-            super.onCreate(savedInstanceState);
-
-            // Create a PreferenceScreen in runtime, since the mock class don't load any XML
-            // resource.
-            PreferenceScreen screen = getPreferenceManager().createPreferenceScreen(getActivity());
-            setPreferenceScreen(screen);
-        }
-    }
-
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        // Attach the {@link MockMainPreferences} to this activity.
-        FragmentManager manager = getFragmentManager();
-        manager.beginTransaction().add(new MockMainPreferences(), FRAGMENT_TAG)
-            .commitAllowingStateLoss();
-        manager.executePendingTransactions();
-    }
-
-    public PreferenceFragment getMainFragment() {
-        return (PreferenceFragment) getFragmentManager().findFragmentByTag(FRAGMENT_TAG);
-    }
-}