[DevTools] Remove old generator in content.

content/browser/BUILD.gn

Index: content/browser/BUILD.gn
diff --git a/content/browser/BUILD.gn b/content/browser/BUILD.gn
index 6ee33f44a54c3bc923e22b7c4d51a04fd2aed77f..97996b9e90da59cfc34434e27aaf3b2800f96690 100644
--- a/content/browser/BUILD.gn
+++ b/content/browser/BUILD.gn
@@ -56,7 +56,6 @@ source_set("browser") {
     "//content/app/strings",
     "//content/browser/background_sync:background_sync_proto",
     "//content/browser/cache_storage:cache_storage_proto",
-    "//content/browser/devtools:gen_devtools_protocol_handler",
     "//content/browser/devtools:protocol_sources",
     "//content/browser/devtools:resources",
     "//content/browser/notifications:notification_proto",
@@ -159,10 +158,6 @@ source_set("browser") {
   ]
 
   sources = [
-    # devtools_protocol_dispatcher.* is generated by
-    # //content/browser/devtools:gen_devtools_protocol_handler.
-    "$root_gen_dir/content/browser/devtools/protocol/devtools_protocol_dispatcher.cc",
-    "$root_gen_dir/content/browser/devtools/protocol/devtools_protocol_dispatcher.h",
     "$target_gen_dir/devtools/protocol/dom.cc",
     "$target_gen_dir/devtools/protocol/dom.h",
     "$target_gen_dir/devtools/protocol/emulation.cc",
@@ -458,8 +453,6 @@ source_set("browser") {
     "devtools/devtools_io_context.h",
     "devtools/devtools_manager.cc",
     "devtools/devtools_manager.h",
-    "devtools/devtools_protocol_handler.cc",
-    "devtools/devtools_protocol_handler.h",
     "devtools/devtools_session.cc",
     "devtools/devtools_session.h",
     "devtools/forwarding_agent_host.cc",
@@ -468,9 +461,6 @@ source_set("browser") {
     "devtools/page_navigation_throttle.h",
     "devtools/protocol/color_picker.cc",
     "devtools/protocol/color_picker.h",
-    "devtools/protocol/devtools_protocol_client.cc",
-    "devtools/protocol/devtools_protocol_client.h",
-    "devtools/protocol/devtools_protocol_delegate.h",
     "devtools/protocol/dom_handler.cc",
     "devtools/protocol/dom_handler.h",
     "devtools/protocol/emulation_handler.cc",