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

content/browser/devtools/devtools_agent_host_impl.h

Index: content/browser/devtools/devtools_agent_host_impl.h
diff --git a/content/browser/devtools/devtools_agent_host_impl.h b/content/browser/devtools/devtools_agent_host_impl.h
index c99c76450da34ab099b350068490007e90820d2e..e49d1cb12ece8e05623c30b13d5f457f0aec9459 100644
--- a/content/browser/devtools/devtools_agent_host_impl.h
+++ b/content/browser/devtools/devtools_agent_host_impl.h
@@ -45,7 +45,6 @@ class CONTENT_EXPORT DevToolsAgentHostImpl : public DevToolsAgentHost,
   std::string GetId() override;
   std::string GetParentId() override;
   std::string GetDescription() override;
-  void SetDescriptionOverride(const std::string& description) override;
   GURL GetFaviconURL() override;
   base::TimeTicks GetLastActivityTime() override;
   BrowserContext* GetBrowserContext() override;
@@ -81,7 +80,6 @@ class CONTENT_EXPORT DevToolsAgentHostImpl : public DevToolsAgentHost,
 
   const std::string id_;
   int session_id_;
-  std::string description_;
   DevToolsAgentHostClient* client_;
   devtools::DevToolsIOContext io_context_;
 };