DevTools: untangle device discovery request from the devtools android bridge.

headless/lib/browser/headless_devtools_manager_delegate.h

Index: headless/lib/browser/headless_devtools_manager_delegate.h
diff --git a/headless/lib/browser/headless_devtools_manager_delegate.h b/headless/lib/browser/headless_devtools_manager_delegate.h
index 088c247e5c95197b6a994c6772e0ce46bfc69bd6..4d43fc76b79559b3bb0e054110a7be9632858903 100644
--- a/headless/lib/browser/headless_devtools_manager_delegate.h
+++ b/headless/lib/browser/headless_devtools_manager_delegate.h
@@ -27,9 +27,6 @@ class HeadlessDevToolsManagerDelegate
   ~HeadlessDevToolsManagerDelegate() override;
 
   // DevToolsManagerDelegate implementation:
-  void Inspect(content::DevToolsAgentHost* agent_host) override {}
-  void DevToolsAgentStateChanged(content::DevToolsAgentHost* agent_host,
-                                 bool attached) override{};
   base::DictionaryValue* HandleCommand(content::DevToolsAgentHost* agent_host,
                                        base::DictionaryValue* command) override;
   std::string GetDiscoveryPageHTML() override;