Android accessibility should not treat whitespace-only nodes as interesting.

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 270 matching lines @@
   // Focusable nodes are always interesting. Note that IsFocusable()
   // already skips over things like iframes and child frames that are
   // technically focusable but shouldn't be exposed as focusable on Android.
   if (IsFocusable())
     return true;
 
   // If it's not focusable but has a control role, then it's interesting.
   if (IsControl())
     return true;
 
-  // Otherwise, the interesting nodes are leaf nodes with text.
-  return PlatformIsLeaf() && !GetText().empty();
+  // Otherwise, the interesting nodes are leaf nodes with non-whitespace text.
+  return PlatformIsLeaf() &&
+      !base::ContainsOnlyChars(GetText(), base::kWhitespaceUTF16);
 }
 
 const BrowserAccessibilityAndroid*
     BrowserAccessibilityAndroid::GetInterestingChild() const {
   if (IsInterestingOnAndroid())
     return this;
 
   const BrowserAccessibilityAndroid* interesting_child = nullptr;
   for (uint32_t i = 0; i < PlatformChildCount(); ++i) {
     const BrowserAccessibilityAndroid* result =
@@ skipping 1161 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