Remove more usage of the base::ListValue::Append(Value*) overload.

content/browser/accessibility/accessibility_ui.cc

Index: content/browser/accessibility/accessibility_ui.cc
diff --git a/content/browser/accessibility/accessibility_ui.cc b/content/browser/accessibility/accessibility_ui.cc
index 53c9863e66be8de99a0910e2c3c734d7f6397a3b..cf0db1142dd83d221b3149888007ff144c90a40f 100644
--- a/content/browser/accessibility/accessibility_ui.cc
+++ b/content/browser/accessibility/accessibility_ui.cc
@@ -4,6 +4,8 @@
 
 #include "content/browser/accessibility/accessibility_ui.h"
 
+#include <memory>
+
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/json/json_writer.h"
@@ -46,7 +48,7 @@ namespace {
 
 bool g_show_internal_accessibility_tree = false;
 
-base::DictionaryValue* BuildTargetDescriptor(
+std::unique_ptr<base::DictionaryValue> BuildTargetDescriptor(
     const GURL& url,
     const std::string& name,
     const GURL& favicon_url,
@@ -54,7 +56,8 @@ base::DictionaryValue* BuildTargetDescriptor(
     int route_id,
     AccessibilityMode accessibility_mode,
     base::ProcessHandle handle = base::kNullProcessHandle) {
-  base::DictionaryValue* target_data = new base::DictionaryValue();
+  std::unique_ptr<base::DictionaryValue> target_data(
+      new base::DictionaryValue());
   target_data->SetInteger(kProcessIdField, process_id);
   target_data->SetInteger(kRouteIdField, route_id);
   target_data->SetString(kUrlField, url.spec());
@@ -66,7 +69,8 @@ base::DictionaryValue* BuildTargetDescriptor(
   return target_data;
 }
 
-base::DictionaryValue* BuildTargetDescriptor(RenderViewHost* rvh) {
+std::unique_ptr<base::DictionaryValue> BuildTargetDescriptor(
+    RenderViewHost* rvh) {
   WebContentsImpl* web_contents = static_cast<WebContentsImpl*>(
       WebContents::FromRenderViewHost(rvh));
   AccessibilityMode accessibility_mode = AccessibilityModeOff;