[DevTools] Support multiple sessions in content/ domain handlers

content/browser/devtools/devtools_session.cc

Index: content/browser/devtools/devtools_session.cc
diff --git a/content/browser/devtools/devtools_session.cc b/content/browser/devtools/devtools_session.cc
index ffe9eb476cd8d8eba3a37cba4c59d06b421f39b2..f9dcb58e6b090f99032a52d319f33350e2c4ff6f 100644
--- a/content/browser/devtools/devtools_session.cc
+++ b/content/browser/devtools/devtools_session.cc
@@ -6,7 +6,6 @@
 
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
-#include "content/browser/devtools/devtools_agent_host_impl.h"
 #include "content/browser/devtools/devtools_manager.h"
 #include "content/browser/devtools/protocol/protocol.h"
 #include "content/public/browser/devtools_manager_delegate.h"
@@ -96,12 +95,4 @@ void DevToolsSession::sendProtocolNotification(
 void DevToolsSession::flushProtocolNotifications() {
 }
 
-protocol::DevToolsDomainHandler* DevToolsSession::GetHandlerByName(
-    const std::string& name) {
-  auto it = handlers_.find(name);
-  if (it == handlers_.end())
-    return nullptr;
-  return it->second.get();
-}
-
 }  // namespace content