Stop passing raw pointers to base::Value API in c/b/chromeos and c/b/extensions

chrome/browser/devtools/devtools_window.cc

Index: chrome/browser/devtools/devtools_window.cc
diff --git a/chrome/browser/devtools/devtools_window.cc b/chrome/browser/devtools/devtools_window.cc
index aed1cc7cb4d16634db1cab9d7857e81cfdc57638..02b60bd174f8931cbc9f1e192529714ad3a9843e 100644
--- a/chrome/browser/devtools/devtools_window.cc
+++ b/chrome/browser/devtools/devtools_window.cc
@@ -1307,14 +1307,14 @@ void DevToolsWindow::CreateDevToolsBrowser() {
   if (!prefs->GetDictionary(prefs::kAppWindowPlacement)->HasKey(kDevToolsApp)) {
     DictionaryPrefUpdate update(prefs, prefs::kAppWindowPlacement);
     base::DictionaryValue* wp_prefs = update.Get();
-    base::DictionaryValue* dev_tools_defaults = new base::DictionaryValue;
-    wp_prefs->Set(kDevToolsApp, dev_tools_defaults);
+    auto dev_tools_defaults = base::MakeUnique<base::DictionaryValue>();
     dev_tools_defaults->SetInteger("left", 100);
     dev_tools_defaults->SetInteger("top", 100);
     dev_tools_defaults->SetInteger("right", 740);
     dev_tools_defaults->SetInteger("bottom", 740);
     dev_tools_defaults->SetBoolean("maximized", false);
     dev_tools_defaults->SetBoolean("always_on_top", false);
+    wp_prefs->Set(kDevToolsApp, std::move(dev_tools_defaults));
   }
 
   browser_ = new Browser(Browser::CreateParams::CreateForDevTools(profile_));