[DevTools] Move IO and Tracing to new generator.

content/browser/devtools/browser_devtools_agent_host.h

Index: content/browser/devtools/browser_devtools_agent_host.h
diff --git a/content/browser/devtools/browser_devtools_agent_host.h b/content/browser/devtools/browser_devtools_agent_host.h
index 527fc5f00c7f3af07fd98440d74fafae5d1fbdd2..7dde71004714c494052b30b01a15f4d8ab3f0abf 100644
--- a/content/browser/devtools/browser_devtools_agent_host.h
+++ b/content/browser/devtools/browser_devtools_agent_host.h
@@ -12,13 +12,16 @@ namespace content {
 class DevToolsProtocolHandler;
 
 namespace devtools {
-namespace io { class IOHandler; }
 namespace memory { class MemoryHandler; }
 namespace system_info { class SystemInfoHandler; }
 namespace tethering { class TetheringHandler; }
-namespace tracing { class TracingHandler; }
 }  // namespace devtools
 
+namespace protocol {
+class IOHandler;
+class TracingHandler;
+}  // namespace protocol
+
 class BrowserDevToolsAgentHost : public DevToolsAgentHostImpl {
  private:
   friend class DevToolsAgentHost;
@@ -40,12 +43,12 @@ class BrowserDevToolsAgentHost : public DevToolsAgentHostImpl {
   bool Close() override;
   bool DispatchProtocolMessage(const std::string& message) override;
 
-  std::unique_ptr<devtools::io::IOHandler> io_handler_;
+  std::unique_ptr<protocol::IOHandler> io_handler_;
   std::unique_ptr<devtools::memory::MemoryHandler> memory_handler_;
   std::unique_ptr<devtools::system_info::SystemInfoHandler>
       system_info_handler_;
   std::unique_ptr<devtools::tethering::TetheringHandler> tethering_handler_;
-  std::unique_ptr<devtools::tracing::TracingHandler> tracing_handler_;
+  std::unique_ptr<protocol::TracingHandler> tracing_handler_;
   std::unique_ptr<DevToolsProtocolHandler> protocol_handler_;
 };