Only set accessibility focus on page load for browser tabs, not web views.

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.content.Context;
 import android.graphics.Rect;
 import android.os.Build;
 import android.os.Bundle;
@@ skipping 352 matching lines @@
 
     private boolean isFrameInfoInitialized() {
         return mRenderCoordinates.getContentWidthCss() != 0.0 ||
                mRenderCoordinates.getContentHeightCss() != 0.0;
     }
 
     @CalledByNative
     private void handlePageLoaded(int id) {
         if (mUserHasTouchExplored) return;
 
-        mAccessibilityFocusId = id;
-        sendAccessibilityEvent(id, AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED);
+        if (mContentViewCore.shouldSetAccessibilityFocusOnPageLoad()) {
+            mAccessibilityFocusId = id;
+            sendAccessibilityEvent(id, AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED);
+        }
     }
 
     @CalledByNative
     private void handleFocusChanged(int id) {
         sendAccessibilityEvent(id, AccessibilityEvent.TYPE_VIEW_FOCUSED);
 
         // Update accessibility focus if not already set to this node.
         if (mAccessibilityFocusId != id) {
             sendAccessibilityEvent(id, AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED);
             mAccessibilityFocusId = id;
@@ skipping 308 matching lines @@
         long nativeBrowserAccessibilityManagerAndroid, AccessibilityEvent event, int id,
         int eventType);
     private native void nativeClick(long nativeBrowserAccessibilityManagerAndroid, int id);
     private native void nativeFocus(long nativeBrowserAccessibilityManagerAndroid, int id);
     private native void nativeBlur(long nativeBrowserAccessibilityManagerAndroid);
     private native void nativeScrollToMakeNodeVisible(
             long nativeBrowserAccessibilityManagerAndroid, int id);
     private native int nativeFindElementType(long nativeBrowserAccessibilityManagerAndroid,
             int startId, String elementType, boolean forwards);
 }