Revert "Add UMA Histogram Manager to Cronet."

components/cronet/android/test/javatests/src/org/chromium/cronet_test_apk/HistogramManagerTest.java

Index: components/cronet/android/test/javatests/src/org/chromium/cronet_test_apk/HistogramManagerTest.java
diff --git a/components/cronet/android/test/javatests/src/org/chromium/cronet_test_apk/HistogramManagerTest.java b/components/cronet/android/test/javatests/src/org/chromium/cronet_test_apk/HistogramManagerTest.java
deleted file mode 100644
index 4a20c6ac11039c61739e12d183dd82e0e740463c..0000000000000000000000000000000000000000
--- a/components/cronet/android/test/javatests/src/org/chromium/cronet_test_apk/HistogramManagerTest.java
+++ /dev/null
@@ -1,34 +0,0 @@
-// 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.
-
-package org.chromium.cronet_test_apk;
-
-import android.test.suitebuilder.annotation.SmallTest;
-
-import org.chromium.base.test.util.Feature;
-import org.chromium.net.UrlRequest;
-
-/**
- * Test HistogramManager.
- */
-public class HistogramManagerTest extends CronetTestBase {
-    // URLs used for tests.
-    private static final String TEST_URL = "http://127.0.0.1:8000";
-
-    CronetTestActivity mActivity;
-
-    @SmallTest
-    @Feature({"Cronet"})
-    public void testHistogramManager() throws Exception {
-        mActivity = launchCronetTestApp();
-        byte delta1[] = mActivity.mHistogramManager.getHistogramDeltas();
-
-        TestUrlRequestListener listener = new TestUrlRequestListener();
-        UrlRequest urlRequest = mActivity.mUrlRequestContext.createRequest(
-                TEST_URL, listener, listener.getExecutor());
-        urlRequest.start();
-        listener.blockForDone();
-        byte delta2[] = mActivity.mHistogramManager.getHistogramDeltas();
-    }
-}