diff --git a/tools/gn2bp/Android.bp.swp b/tools/gn2bp/Android.bp.swp
index 78ae260..3e521bf 100644
--- a/tools/gn2bp/Android.bp.swp
+++ b/tools/gn2bp/Android.bp.swp
@@ -5759,7 +5759,6 @@
         "base/android/java/src/org/chromium/base/RadioUtils.java",
         "base/android/java/src/org/chromium/base/StreamUtil.java",
         "base/android/java/src/org/chromium/base/StrictModeContext.java",
-        "base/android/java/src/org/chromium/base/SysUtils.java",
         "base/android/java/src/org/chromium/base/ThreadUtils.java",
         "base/android/java/src/org/chromium/base/TimeUtils.java",
         "base/android/java/src/org/chromium/base/TimezoneUtils.java",
@@ -5802,8 +5801,6 @@
         "base/android/java/src/org/chromium/base/jank_tracker/JankTracker.java",
         "base/android/java/src/org/chromium/base/jank_tracker/JankTrackerImpl.java",
         "base/android/java/src/org/chromium/base/library_loader/LegacyLinker.java",
-        "base/android/java/src/org/chromium/base/library_loader/LibraryLoader.java",
-        "base/android/java/src/org/chromium/base/library_loader/LibraryPrefetcher.java",
         "base/android/java/src/org/chromium/base/library_loader/Linker.java",
         "base/android/java/src/org/chromium/base/library_loader/LinkerJni.java",
         "base/android/java/src/org/chromium/base/library_loader/LoaderErrors.java",
@@ -5834,7 +5831,6 @@
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConnection.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConstants.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessLauncher.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessService.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessServiceDelegate.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnection.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionDelegate.java",
@@ -6072,7 +6068,6 @@
         "base/android/java/src/org/chromium/base/RadioUtils.java",
         "base/android/java/src/org/chromium/base/StreamUtil.java",
         "base/android/java/src/org/chromium/base/StrictModeContext.java",
-        "base/android/java/src/org/chromium/base/SysUtils.java",
         "base/android/java/src/org/chromium/base/ThreadUtils.java",
         "base/android/java/src/org/chromium/base/TimeUtils.java",
         "base/android/java/src/org/chromium/base/TimezoneUtils.java",
@@ -6115,8 +6110,6 @@
         "base/android/java/src/org/chromium/base/jank_tracker/JankTracker.java",
         "base/android/java/src/org/chromium/base/jank_tracker/JankTrackerImpl.java",
         "base/android/java/src/org/chromium/base/library_loader/LegacyLinker.java",
-        "base/android/java/src/org/chromium/base/library_loader/LibraryLoader.java",
-        "base/android/java/src/org/chromium/base/library_loader/LibraryPrefetcher.java",
         "base/android/java/src/org/chromium/base/library_loader/Linker.java",
         "base/android/java/src/org/chromium/base/library_loader/LinkerJni.java",
         "base/android/java/src/org/chromium/base/library_loader/LoaderErrors.java",
@@ -6147,7 +6140,6 @@
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConnection.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConstants.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessLauncher.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessService.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessServiceDelegate.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnection.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionDelegate.java",
@@ -6385,7 +6377,6 @@
         "base/android/java/src/org/chromium/base/RadioUtils.java",
         "base/android/java/src/org/chromium/base/StreamUtil.java",
         "base/android/java/src/org/chromium/base/StrictModeContext.java",
-        "base/android/java/src/org/chromium/base/SysUtils.java",
         "base/android/java/src/org/chromium/base/ThreadUtils.java",
         "base/android/java/src/org/chromium/base/TimeUtils.java",
         "base/android/java/src/org/chromium/base/TimezoneUtils.java",
@@ -6428,8 +6419,6 @@
         "base/android/java/src/org/chromium/base/jank_tracker/JankTracker.java",
         "base/android/java/src/org/chromium/base/jank_tracker/JankTrackerImpl.java",
         "base/android/java/src/org/chromium/base/library_loader/LegacyLinker.java",
-        "base/android/java/src/org/chromium/base/library_loader/LibraryLoader.java",
-        "base/android/java/src/org/chromium/base/library_loader/LibraryPrefetcher.java",
         "base/android/java/src/org/chromium/base/library_loader/Linker.java",
         "base/android/java/src/org/chromium/base/library_loader/LinkerJni.java",
         "base/android/java/src/org/chromium/base/library_loader/LoaderErrors.java",
@@ -6460,7 +6449,6 @@
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConnection.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConstants.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessLauncher.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessService.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildProcessServiceDelegate.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnection.java",
         "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionDelegate.java",
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index cf8f1dd..dbfa422 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -26,7 +26,6 @@
 # libraries are also mapped to their Android equivalents -- see |builtin_deps|.
 
 import argparse
-import collections
 import json
 import logging as log
 import operator
diff --git a/tools/gn2bp/gn_utils.py b/tools/gn2bp/gn_utils.py
index 919b3e3..5f187a3 100644
--- a/tools/gn2bp/gn_utils.py
+++ b/tools/gn2bp/gn_utils.py
@@ -15,17 +15,10 @@
 # A collection of utilities for extracting build rule information from GN
 # projects.
 
-from __future__ import print_function
-import collections
-import errno
-import filecmp
 import json
 import logging as log
 import os
 import re
-import shutil
-import subprocess
-import sys
 
 BUILDFLAGS_TARGET = '//gn:gen_buildflags'
 GEN_VERSION_TARGET = '//src/base:version_gen_h'