[DevTools] Cleanup DevToolsTarget and DevToolsManagerDelegate after moving to devtools_discovery.

chrome/browser/devtools/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 if (!is_android) {
   import("//tools/grit/grit_rule.gni")
 }
 
 action("devtools_protocol_constants") {
   script = "devtools_protocol_constants_generator.py"
@@ skipping 12 matching lines @@
   args = [ "chrome" ]
   args += rebase_path(outputs, root_build_dir)
   args += [ rebase_path(blink_protocol, root_build_dir) ]
   args += [ rebase_path(browser_protocol, root_build_dir) ]
 }
 
 # GYP version: chrome/chrome_debugger.gypi:debugger
 static_library("devtools") {
   # Note: new sources and deps should be generally added in (!is_android) below.
   sources = [
+    "chrome_devtools_manager_delegate.cc",
+    "chrome_devtools_manager_delegate.h",
     "devtools_network_conditions.cc",
     "devtools_network_conditions.h",
     "devtools_network_controller.cc",
     "devtools_network_controller.h",
     "devtools_network_interceptor.cc",
     "devtools_network_interceptor.h",
     "devtools_network_protocol_handler.cc",
     "devtools_network_protocol_handler.h",
     "devtools_network_transaction.cc",
     "devtools_network_transaction.h",
@@ skipping 29 matching lines @@
       "//net:http_server",
       "//skia",
       "//third_party/icu",
       "//third_party/leveldatabase",
       "//third_party/libusb",
       ":webrtc_device_provider_resources",
     ]
     sources += [
       "chrome_devtools_discovery_provider.cc",
       "chrome_devtools_discovery_provider.h",
-      "chrome_devtools_manager_delegate.cc",
-      "chrome_devtools_manager_delegate.h",
       "device/adb/adb_client_socket.cc",
       "device/adb/adb_client_socket.h",
       "device/adb/adb_device_provider.cc",
       "device/adb/adb_device_provider.h",
       "device/android_device_info_query.cc",
       "device/android_device_manager.cc",
       "device/android_device_manager.h",
       "device/android_web_socket.cc",
       "device/devtools_android_bridge.cc",
       "device/devtools_android_bridge.h",
@@ skipping 47 matching lines @@
     source = "device/webrtc/resources.grd"
     output_dir = "$root_gen_dir/chrome"
     outputs = [
       "grit/webrtc_device_provider_resources.h",
       "grit/webrtc_device_provider_resources_map.cc",
       "grit/webrtc_device_provider_resources_map.h",
       "webrtc_device_provider_resources.pak",
     ]
   }
 }