DevTools: merge devtools_http_handler into content - it is used in all the embedders anyways.

headless/lib/browser/headless_devtools.h

Index: headless/lib/browser/headless_devtools.h
diff --git a/headless/lib/browser/headless_devtools.h b/headless/lib/browser/headless_devtools.h
index cf6b9c421abf34e45f729683def0ac8ee99ebc28..eccdd088806253945097ec31ec001f7fd78b7f94 100644
--- a/headless/lib/browser/headless_devtools.h
+++ b/headless/lib/browser/headless_devtools.h
@@ -9,16 +9,12 @@
 
 #include "headless/public/headless_browser.h"
 
-namespace devtools_http_handler {
-class DevToolsHttpHandler;
-}
-
 namespace headless {
 
 // Starts a DevTools HTTP handler on the loopback interface on the port
 // configured by HeadlessBrowser::Options.
-std::unique_ptr<devtools_http_handler::DevToolsHttpHandler>
-CreateLocalDevToolsHttpHandler(HeadlessBrowser::Options* options);
+void StartLocalDevToolsHttpHandler(HeadlessBrowser::Options* options);
+void StopLocalDevToolsHttpHandler();
 
 }  // namespace headless