[DevTools] devtools_session.{h,cc}: Remove unused private method.

Change-Id: I152eb8755d68470f176a5715bd2d3da4cfdcee70
Reviewed-on: https://chromium-review.googlesource.com/c/1309175Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Commit-Queue: Johannes Henkel <johannes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#604437}

content/browser/devtools/devtools_agent_host_impl.cc

@@ -9,7 +9,6 @@
 
 #include "base/bind.h"
 #include "base/json/json_reader.h"
-#include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/observer_list.h"
 #include "content/browser/devtools/devtools_manager.h"

content/browser/devtools/devtools_session.cc

@@ -4,8 +4,6 @@
 
 #include "content/browser/devtools/devtools_session.h"
 
-#include "base/json/json_reader.h"
-#include "base/json/json_writer.h"
 #include "content/browser/devtools/devtools_manager.h"
 #include "content/browser/devtools/protocol/devtools_domain_handler.h"
 #include "content/browser/devtools/protocol/protocol.h"
@@ -99,14 +97,6 @@ void DevToolsSession::AttachToAgent(blink::mojom::DevToolsAgent* agent) {
     session_state_cookie_ = blink::mojom::DevToolsSessionState::New();
 }
 
-void DevToolsSession::SendResponse(
-    std::unique_ptr<base::DictionaryValue> response) {
-  std::string json;
-  base::JSONWriter::Write(*response.get(), &json);
-  client_->DispatchProtocolMessage(agent_host_, json);
-  // |this| may be deleted at this point.
-}
-
 void DevToolsSession::MojoConnectionDestroyed() {
   binding_.Close();
   session_ptr_.reset();

content/browser/devtools/devtools_session.h

@@ -53,7 +53,6 @@ class DevToolsSession : public protocol::FrontendChannel,
   HandlersMap& handlers() { return handlers_; }
 
  private:
-  void SendResponse(std::unique_ptr<base::DictionaryValue> response);
   void MojoConnectionDestroyed();
   void DispatchProtocolMessageToAgent(int call_id,
                                       const std::string& method,