Revert of Enable HTMLMediaElement@autoplay on Android

chrome/android/java/src/org/chromium/chrome/browser/VoiceSearchTabHelper.java

Index: chrome/android/java/src/org/chromium/chrome/browser/VoiceSearchTabHelper.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/VoiceSearchTabHelper.java b/chrome/android/java/src/org/chromium/chrome/browser/VoiceSearchTabHelper.java
new file mode 100644
index 0000000000000000000000000000000000000000..1a74d5cd564b94fa7c61d37fbf2f281607d63196
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/VoiceSearchTabHelper.java
@@ -0,0 +1,32 @@
+// 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.chrome.browser;
+
+import org.chromium.content.browser.WebContentsObserverAndroid;
+import org.chromium.content_public.browser.WebContents;
+
+/**
+ * Tab helper to toggle media autoplay for voice URL searches.
+ */
+public class VoiceSearchTabHelper extends WebContentsObserverAndroid {
+    private final WebContents mWebContents;
+
+    /**
+     * Create an instance of VoiceSearchTabHelper.
+     *
+     * @param webContents WebContents to update media autoplay status.
+     */
+    public VoiceSearchTabHelper(WebContents webContents) {
+        super(webContents);
+        mWebContents = webContents;
+    }
+
+    @Override
+    public void navigationEntryCommitted() {
+        nativeUpdateAutoplayStatus(mWebContents);
+    }
+
+    private native void nativeUpdateAutoplayStatus(WebContents webContents);
+}