Handle UI operations through gamepad

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

 // Copyright 2012 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.content.browser;
 
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.Activity;
 import android.app.SearchManager;
@@ skipping 1156 matching lines @@
         return mHasSelection ? mFocusedNodeEditable : false;
     }
 
     /**
      * @return Whether the current focused node is editable.
      */
     public boolean isFocusedNodeEditable() {
         return mFocusedNodeEditable;
     }
 
+    /**
+     * @return Whether the HTML5 gamepad API is active.
+     */
+    public boolean isGamepadAPIActive() {
+        return GamepadList.isGamepadAccessed();
+    }
+
     // End FrameLayout overrides.
 
     /**
      * @see View#onTouchEvent(MotionEvent)
      */
     public boolean onTouchEvent(MotionEvent event) {
         final boolean isTouchHandleEvent = false;
         return onTouchEventImpl(event, isTouchHandleEvent);
     }
 
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     private native void nativeSetTextTrackSettings(long nativeContentViewCoreImpl,
             boolean textTracksEnabled, String textTrackBackgroundColor, String textTrackFontFamily,
             String textTrackFontStyle, String textTrackFontVariant, String textTrackTextColor,
             String textTrackTextShadow, String textTrackTextSize);
 
     private native void nativeExtractSmartClipData(long nativeContentViewCoreImpl,
             int x, int y, int w, int h);
 
     private native void nativeSetBackgroundOpaque(long nativeContentViewCoreImpl, boolean opaque);
 }