[DevTools] Migrate android to devtools_discovery.

components/devtools_discovery/devtools_discovery_manager.cc

Index: components/devtools_discovery/devtools_discovery_manager.cc
diff --git a/components/devtools_discovery/devtools_discovery_manager.cc b/components/devtools_discovery/devtools_discovery_manager.cc
index 3138732db0b050eddefec5aea7b304f876d6b78f..ff006bde8b1e66be6aa0abf6194d7dccab8cf702 100644
--- a/components/devtools_discovery/devtools_discovery_manager.cc
+++ b/components/devtools_discovery/devtools_discovery_manager.cc
@@ -40,6 +40,18 @@ DevToolsTargetDescriptor::List DevToolsDiscoveryManager::GetDescriptors() {
   return result;
 }
 
+void DevToolsDiscoveryManager::SetCreateCallback(
+    const CreateCallback& callback) {
+  create_callback_ = callback;
+}
+
+scoped_ptr<DevToolsTargetDescriptor>
+DevToolsDiscoveryManager::CreateNew(const GURL& url) {
+  if (create_callback_.is_null())
+    return scoped_ptr<DevToolsTargetDescriptor>();
+  return create_callback_.Run(url);
+}
+
 DevToolsTargetDescriptor::List
 DevToolsDiscoveryManager::GetDescriptorsFromProviders() {
   DevToolsTargetDescriptor::List result;