Add commands to manage tabs and contexts to Browser Domain

content/shell/browser/shell_devtools_manager_delegate.cc

Index: content/shell/browser/shell_devtools_manager_delegate.cc
diff --git a/content/shell/browser/shell_devtools_manager_delegate.cc b/content/shell/browser/shell_devtools_manager_delegate.cc
index c360d970c4663df851016373be4d7624d2b4aedd..9361e9a53cab2b5a3563dd93e23c3bb3ec5fe640 100644
--- a/content/shell/browser/shell_devtools_manager_delegate.cc
+++ b/content/shell/browser/shell_devtools_manager_delegate.cc
@@ -229,8 +229,11 @@ ShellDevToolsManagerDelegate::~ShellDevToolsManagerDelegate() {
 
 base::DictionaryValue* ShellDevToolsManagerDelegate::HandleCommand(
     DevToolsAgentHost* agent_host,
-    base::DictionaryValue* command) {
-  return NULL;
+    base::DictionaryValue* command_dict) {
+  std::unique_ptr<base::DictionaryValue> result =
+      devtools_discovery::DevToolsDiscoveryManager::GetInstance()
+          ->HandleNewTargetCommand(command_dict);
+  return result.release();  // Caller takes ownership.
 }
 
 }  // namespace content