Android: turn on auto-detect encoding by default

chrome/android/javatests/src/org/chromium/chrome/browser/EncodingDetectionTest.java

+// 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.chrome.browser;
+
+import android.os.Environment;
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.chromium.base.test.util.Feature;
+import org.chromium.chrome.test.ChromeActivityTestCaseBase;
+import org.chromium.net.test.EmbeddedTestServer;
+
+/**
+ * Tests text encoding detection.
+ */
+public class EncodingDetectionTest extends ChromeActivityTestCaseBase<ChromeActivity> {
+
+    // TODO(jinsukkim): Fix and enable BrowserEncodingTest::TestEncodingAutoDetect()
+    //     once auto-detection turns on for desktop platforms. Then this test can
+    //     be removed safely since the native part handling encoding detection is
+    //     shared with Android platform.
+
+    private EmbeddedTestServer mTestServer;
+
+    public EncodingDetectionTest() {
+        super(ChromeActivity.class);
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        mTestServer = EmbeddedTestServer.createAndStartFileServer(
+                getInstrumentation().getContext(), Environment.getExternalStorageDirectory());
+    }
+
+    @Override
+    protected void tearDown() throws Exception {
+        mTestServer.stopAndDestroyServer();
+        super.tearDown();
+    }
+
+    @Override
+    public void startMainActivity() throws InterruptedException {
+        startMainActivityOnBlankPage();
+    }
+
+    @SmallTest
+    @Feature({"Encoding"})
+    public void testAutodetectEncoding() throws Exception {
+
+        String testUrl = mTestServer.getURL(
+                "/chrome/test/data/encoding_tests/auto_detect/"
+                + "Big5_with_no_encoding_specified.html");
+        loadUrl(testUrl);
+        assertEquals("Wrong page encoding detected", "Big5",
+                getActivity().getCurrentContentViewCore().getWebContents().getEncoding());
+    }
+}