Include a role description string in node info for Android accessibility.

content/browser/accessibility/accessibility_tree_formatter_android.cc

Index: content/browser/accessibility/accessibility_tree_formatter_android.cc
diff --git a/content/browser/accessibility/accessibility_tree_formatter_android.cc b/content/browser/accessibility/accessibility_tree_formatter_android.cc
index 12321df619d0886d3343d298894ccbae43c4c798..24fce4d93ce590360630f14321308e8dda764c4a 100644
--- a/content/browser/accessibility/accessibility_tree_formatter_android.cc
+++ b/content/browser/accessibility/accessibility_tree_formatter_android.cc
@@ -127,6 +127,7 @@ void AccessibilityTreeFormatterAndroid::AddProperties(
 
   // String attributes.
   dict->SetString("name", android_node->GetText());
+  dict->SetString("role_description", android_node->GetRoleDescription());
 
   // Int attributes.
   dict->SetInteger("item_index", android_node->GetItemIndex());
@@ -171,6 +172,15 @@ base::string16 AccessibilityTreeFormatterAndroid::ToString(
   dict.GetString("class", &class_value);
   WriteAttribute(true, base::UTF16ToUTF8(class_value), &line);
 
+  std::string role_description;
+  dict.GetString("role_description", &role_description);
+  if (!role_description.empty()) {
+    WriteAttribute(
+        true,
+        StringPrintf("role_description='%s'", role_description.c_str()),
+        &line);
+  }
+
   for (unsigned i = 0; i < arraysize(BOOL_ATTRIBUTES); i++) {
     const char* attribute_name = BOOL_ATTRIBUTES[i];
     bool value;