Collect metrics on running Accessibility services on Android

content/public/android/java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityManager.java

 // Copyright 2013 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.accessibility;
 
+import android.accessibilityservice.AccessibilityServiceInfo;
 import android.annotation.SuppressLint;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.graphics.Rect;
 import android.os.Build;
 import android.os.Bundle;
 import android.provider.Settings;
 import android.text.SpannableString;
 import android.text.style.URLSpan;
 import android.view.MotionEvent;
@@ skipping 34 matching lines @@
     // Source: https://developer.android.com/reference/android/R.id.html
     protected static final int ACTION_CONTEXT_CLICK = 0x0102003c;
     protected static final int ACTION_SHOW_ON_SCREEN = 0x01020036;
     protected static final int ACTION_SCROLL_UP = 0x01020038;
     protected static final int ACTION_SCROLL_DOWN = 0x0102003a;
     protected static final int ACTION_SCROLL_LEFT = 0x01020039;
     protected static final int ACTION_SCROLL_RIGHT = 0x0102003b;
 
     private final AccessibilityNodeProvider mAccessibilityNodeProvider;
     protected ContentViewCore mContentViewCore;
-    private final AccessibilityManager mAccessibilityManager;
+    protected final AccessibilityManager mAccessibilityManager;
     private final RenderCoordinates mRenderCoordinates;
     private long mNativeObj;
     private Rect mAccessibilityFocusRect;
     private boolean mIsHovering;
     private int mLastHoverId = View.NO_ID;
     protected int mCurrentRootId;
     private final int[] mTempLocation = new int[2];
     private final ViewGroup mView;
     private boolean mUserHasTouchExplored;
     private boolean mPendingScrollToMakeNodeVisible;
@@ skipping 1134 matching lines @@
         if (BuildInfo.isAtLeastO()) {
             return (Settings.System.getInt(contentResolver, Settings.System.TEXT_SHOW_PASSWORD, 1)
                     == 1);
         }
 
         return (Settings.Secure.getInt(
                         contentResolver, Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0)
                 == 1);
     }
 
+    /**
+     * Iterate over all enabled accessibility services and return a bitmask containing the union
+     * of all event types that they listen to.
+     * @return
+     */
+    @CalledByNative
+    private int getAccessibilityServiceEventTypeMask() {
+        int eventTypeMask = 0;
+        for (AccessibilityServiceInfo service :
+                mAccessibilityManager.getEnabledAccessibilityServiceList(
+                        AccessibilityServiceInfo.FEEDBACK_ALL_MASK)) {
+            eventTypeMask |= service.eventTypes;
+        }
+        return eventTypeMask;
+    }
+
+    /**
+     * Iterate over all enabled accessibility services and return a bitmask containing the union
+     * of all feedback types that they provide.
+     * @return
+     */
+    @CalledByNative
+    private int getAccessibilityServiceFeedbackTypeMask() {
+        int feedbackTypeMask = 0;
+        for (AccessibilityServiceInfo service :
+                mAccessibilityManager.getEnabledAccessibilityServiceList(
+                        AccessibilityServiceInfo.FEEDBACK_ALL_MASK)) {
+            feedbackTypeMask |= service.feedbackType;
+        }
+        return feedbackTypeMask;
+    }
+
+    /**
+     * Iterate over all enabled accessibility services and return a bitmask containing the union
+     * of all accessibility service flags from any of them.
+     * @return
+     */
+    @CalledByNative
+    private int getAccessibilityServiceFlagsMask() {
+        int flagsMask = 0;
+        for (AccessibilityServiceInfo service :
+                mAccessibilityManager.getEnabledAccessibilityServiceList(
+                        AccessibilityServiceInfo.FEEDBACK_ALL_MASK)) {
+            flagsMask |= service.flags;
+        }
+        return flagsMask;
+    }
+
+    /**
+     * Iterate over all enabled accessibility services and return a bitmask containing the union
+     * of all service capabilities.
+     * @return
+     */
+    @CalledByNative
+    protected int getAccessibilityServiceCapabilitiesMask() {
+        // Implemented in KitKatBrowserAccessibilityManager.
+        return 0;
+    }
+
     private native void nativeOnAutofillPopupDisplayed(
             long nativeBrowserAccessibilityManagerAndroid);
     private native void nativeOnAutofillPopupDismissed(
             long nativeBrowserAccessibilityManagerAndroid);
     private native int nativeGetIdForElementAfterElementHostingAutofillPopup(
             long nativeBrowserAccessibilityManagerAndroid);
     private native int nativeGetRootId(long nativeBrowserAccessibilityManagerAndroid);
     private native boolean nativeIsNodeValid(long nativeBrowserAccessibilityManagerAndroid, int id);
     private native boolean nativeIsAutofillPopupNode(
             long nativeBrowserAccessibilityManagerAndroid, int id);
@@ skipping 33 matching lines @@
             long nativeBrowserAccessibilityManagerAndroid, int id);
     private native boolean nativeIsSlider(
             long nativeBrowserAccessibilityManagerAndroid, int id);
     private native boolean nativeScroll(
             long nativeBrowserAccessibilityManagerAndroid, int id, int direction);
     protected native String nativeGetSupportedHtmlElementTypes(
             long nativeBrowserAccessibilityManagerAndroid);
     private native void nativeShowContextMenu(
             long nativeBrowserAccessibilityManagerAndroid, int id);
 }