Don't expose Android set selection accessibility action for empty text fields

content/browser/accessibility/browser_accessibility_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_android.h"
 
 #include "base/i18n/break_iterator.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 1325 matching lines @@
   for (uint32_t i = 0; i < InternalChildCount(); i++) {
     BrowserAccessibility* child = InternalGetChild(i);
     if (child->HasState(ui::AX_STATE_FOCUSABLE))
       return true;
     if (static_cast<BrowserAccessibilityAndroid*>(child)->HasFocusableChild())
       return true;
   }
   return false;
 }
 
+bool BrowserAccessibilityAndroid::HasNonEmptyValue() const {
+  return IsEditableText() && !GetValue().empty();
+}
+
 bool BrowserAccessibilityAndroid::HasOnlyTextChildren() const {
   // This is called from PlatformIsLeaf, so don't call PlatformChildCount
   // from within this!
   for (uint32_t i = 0; i < InternalChildCount(); i++) {
     BrowserAccessibility* child = InternalGetChild(i);
     if (!child->IsTextOnlyObject())
       return false;
   }
   return true;
 }
@@ skipping 64 matching lines @@
 int BrowserAccessibilityAndroid::CountChildrenWithRole(ui::AXRole role) const {
   int count = 0;
   for (uint32_t i = 0; i < PlatformChildCount(); i++) {
     if (PlatformGetChild(i)->GetRole() == role)
       count++;
   }
   return count;
 }
 
 }  // namespace content