Remove remains of webrtc/base

webrtc/rtc_base/BUILD.gn

Index: webrtc/rtc_base/BUILD.gn
diff --git a/webrtc/rtc_base/BUILD.gn b/webrtc/rtc_base/BUILD.gn
index 851973b15a07cb06ac9a8f6bb7604650c8be81c0..925f915aca4efd600f1d7adca70b55e8ca99a08c 100644
--- a/webrtc/rtc_base/BUILD.gn
+++ b/webrtc/rtc_base/BUILD.gn
@@ -203,8 +203,8 @@ rtc_static_library("rtc_base_approved") {
     # Dependency on chromium's logging (in //base).
     deps += [ "//base:base" ]
     sources += [
-      "../../webrtc_overrides/webrtc/base/logging.cc",
-      "../../webrtc_overrides/webrtc/base/logging.h",
+      "../../webrtc_overrides/webrtc/rtc_base/logging.cc",
+      "../../webrtc_overrides/webrtc/rtc_base/logging.h",
     ]
   } else {
     sources += [
@@ -301,8 +301,8 @@ rtc_static_library("rtc_task_queue") {
 
   if (build_with_chromium) {
     sources = [
-      "../../webrtc_overrides/webrtc/base/task_queue.cc",
-      "../../webrtc_overrides/webrtc/base/task_queue.h",
+      "../../webrtc_overrides/webrtc/rtc_base/task_queue.cc",
+      "../../webrtc_overrides/webrtc/rtc_base/task_queue.h",
     ]
   } else {
     sources = [
@@ -518,7 +518,7 @@ rtc_static_library("rtc_base") {
 
   if (build_with_chromium) {
     if (is_win) {
-      sources += [ "../../webrtc_overrides/webrtc/base/win32socketinit.cc" ]
+      sources += [ "../../webrtc_overrides/webrtc/rtc_base/win32socketinit.cc" ]
     }
     include_dirs = [ "../../boringssl/src/include" ]
     public_configs += [ ":rtc_base_chromium_config" ]