Gamepad API support for chrome on android

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

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
index 2e8d56df7541aa7ac99a288fcb4175b669c4477b..7bbe211539c9ecd2c77cdc65d0a52f03e25bdc93 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
@@ -1455,6 +1455,7 @@ public class ContentViewCore
         setAccessibilityState(mAccessibilityManager.isEnabled());
 
         ScreenOrientationListener.getInstance().addObserver(this, mContext);
+        GamepadList.onAttachedToWindow(mContext);
     }
 
     /**
@@ -1469,6 +1470,7 @@ public class ContentViewCore
         unregisterAccessibilityContentObserver();
 
         ScreenOrientationListener.getInstance().removeObserver(this);
+        GamepadList.onDetachedFromWindow();
     }
 
     /**
@@ -1696,6 +1698,9 @@ public class ContentViewCore
      * @see View#dispatchKeyEvent(KeyEvent)
      */
     public boolean dispatchKeyEvent(KeyEvent event) {
+        if (GamepadList.dispatchKeyEvent(event)) {
+            return true;
+        }
         if (getContentViewClient().shouldOverrideKeyEvent(event)) {
             return mContainerViewInternals.super_dispatchKeyEvent(event);
         }
@@ -1747,6 +1752,9 @@ public class ContentViewCore
      * @see View#onGenericMotionEvent(MotionEvent)
      */
     public boolean onGenericMotionEvent(MotionEvent event) {
+        if (GamepadList.onGenericMotionEvent(event)) {
+            return true;
+        }
         if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) {
             switch (event.getAction()) {
                 case MotionEvent.ACTION_SCROLL: