Add Accessibility name for native buttons.

views/controls/button/checkbox.cc

Index: views/controls/button/checkbox.cc
diff --git a/views/controls/button/checkbox.cc b/views/controls/button/checkbox.cc
index ac756cd64ad8659ec2d1c4ee02dfca4e54ea0cd0..196f40e134d91ceea71b2f3642e234115b75946c 100644
--- a/views/controls/button/checkbox.cc
+++ b/views/controls/button/checkbox.cc
@@ -160,12 +160,6 @@ bool Checkbox::GetAccessibleRole(AccessibilityTypes::Role* role) {
   return true;
 }
 
-bool Checkbox::GetAccessibleName(std::wstring* name) {
-  DCHECK(name);
-  *name = label_->GetText();
-  return !name->empty();
-}
-
 std::string Checkbox::GetClassName() const {
   return kViewClassName;
 }