Don't send extra text changed AX events on Android

content/browser/accessibility/browser_accessibility_manager_android.cc

 // 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.
 
 #include "content/browser/accessibility/browser_accessibility_manager_android.h"
 
 #include <cmath>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 158 matching lines @@
               env, android_node->GetText()).obj());
       break;
     }
     case ui::AX_EVENT_TEXT_SELECTION_CHANGED:
       Java_BrowserAccessibilityManager_handleTextSelectionChanged(
           env, obj.obj(), node->GetId());
       break;
     case ui::AX_EVENT_CHILDREN_CHANGED:
     case ui::AX_EVENT_TEXT_CHANGED:
     case ui::AX_EVENT_VALUE_CHANGED:
-      if (node->IsEditableText()) {
+      if (node->IsEditableText() && GetFocus(GetRoot()) == node) {
         Java_BrowserAccessibilityManager_handleEditableTextChanged(
             env, obj.obj(), node->GetId());
       } else if (android_node->IsSlider()) {
         Java_BrowserAccessibilityManager_handleSliderChanged(
             env, obj.obj(), node->GetId());
       }
       break;
     default:
       // There are some notifications that aren't meaningful on Android.
       // It's okay to skip them.
@@ skipping 551 matching lines @@
 BrowserAccessibilityManagerAndroid::UseRootScrollOffsetsWhenComputingBounds() {
   // The Java layer handles the root scroll offset.
   return false;
 }
 
 bool RegisterBrowserAccessibilityManager(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content