DevTools: remove DevToolsTargetDescriptor and its implementations, we are now based on devtools age…

android_webview/browser/aw_dev_tools_discovery_provider.cc

Index: android_webview/browser/aw_dev_tools_discovery_provider.cc
diff --git a/android_webview/browser/aw_dev_tools_discovery_provider.cc b/android_webview/browser/aw_dev_tools_discovery_provider.cc
index 82b746c7633bfb3c3f117891feb5c89d9de766a3..aa3e44831a16ff046e8d58517dc1e974a41b8bab 100644
--- a/android_webview/browser/aw_dev_tools_discovery_provider.cc
+++ b/android_webview/browser/aw_dev_tools_discovery_provider.cc
@@ -58,17 +58,14 @@ AwDevToolsDiscoveryProvider::AwDevToolsDiscoveryProvider() {
 AwDevToolsDiscoveryProvider::~AwDevToolsDiscoveryProvider() {
 }
 
-devtools_discovery::DevToolsTargetDescriptor::List
+content::DevToolsAgentHost::List
 AwDevToolsDiscoveryProvider::GetDescriptors() {
   DevToolsAgentHost::List agent_hosts = DevToolsAgentHost::GetOrCreateAll();
-  devtools_discovery::DevToolsTargetDescriptor::List result;
-  result.reserve(agent_hosts.size());
   for (auto& agent_host : agent_hosts) {
     agent_host->SetDescriptionOverride(
         GetViewDescription(agent_host->GetWebContents()));
-    result.push_back(new devtools_discovery::BasicTargetDescriptor(agent_host));
   }
-  return result;
+  return agent_hosts;
 }
 
 }  // namespace android_webview