GN: forward_variables_from shouldn't clobber vars.

components/cronet/android/BUILD.gn

 # Copyright 2015 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.
 
 import("//build/buildflag_header.gni")
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/util/version.gni")
 import("//chrome/version.gni")
 import("//testing/test.gni")
@@ skipping 249 matching lines @@
   ]
 
   srcjar_deps = [
     ":cronet_version_srcjar",
     ":http_cache_type_java",
     ":url_request_error_java",
     ":load_states_list",
     ":network_quality_observations_java",
   ]
 
-  run_findbugs = true
+  run_findbugs_override = true
 }
 
 android_library("cronet_java") {
   java_files = [
     "java/src/org/chromium/net/ChromiumUrlRequest.java",
     "java/src/org/chromium/net/ChromiumUrlRequestContext.java",
     "java/src/org/chromium/net/ChromiumUrlRequestFactory.java",
     "java/src/org/chromium/net/CronetBidirectionalStream.java",
     "java/src/org/chromium/net/CronetLibraryLoader.java",
     "java/src/org/chromium/net/CronetUploadDataStream.java",
@@ skipping 16 matching lines @@
     "//net/android:net_java",
     "//third_party/android_tools:android_support_annotations_javalib",
     "//third_party/jsr-305:jsr_305_javalib",
   ]
 
   srcjar_deps = [
     ":chromium_url_request_java",
     ":net_request_priority_java",
   ]
 
-  run_findbugs = true
+  run_findbugs_override = true
 }
 
 android_resources("cronet_sample_apk_resources") {
   resource_dirs = [ "sample/res" ]
   android_manifest = "sample/AndroidManifest.xml"
 }
 
 android_library("cronet_sample_apk_java") {
   java_files = [
     "sample/src/org/chromium/cronet_sample_apk/CronetSampleActivity.java",
     "sample/src/org/chromium/cronet_sample_apk/CronetSampleApplication.java",
   ]
 
   deps = [
     ":cronet_api",
     ":cronet_java",
     ":cronet_sample_apk_resources",
     "//base:base_java",
   ]
 
-  run_findbugs = true
+  run_findbugs_override = true
 }
 
 android_apk("cronet_sample_apk") {
   apk_name = "CronetSample"
   android_manifest = "sample/AndroidManifest.xml"
   native_libs = [ "libcronet.so" ]
 
   deps = [
     ":cronet",
     ":cronet_sample_apk_java",
     ":cronet_sample_apk_resources",
     "//base:base_java",
     "//third_party/jsr-305:jsr_305_javalib",
   ]
 
-  run_findbugs = true
+  run_findbugs_override = true
   if (!is_debug) {
     proguard_enabled = true
     proguard_configs = [
       "proguard.cfg",
       "sample/javatests/proguard.cfg",
     ]
   }
 }
 
 # cronet_sample_test_apk_resources is identical to
@@ skipping 18 matching lines @@
     ":cronet_api",
     ":cronet_java",
     ":cronet_sample_apk_java",
     ":cronet_sample_test_apk_resources",
     "//base:base_java",
     "//base:base_java_test_support",
     "//net/android:net_java_test_support",
   ]
   additional_apks = [ "//net/android:net_test_support_apk" ]
 
-  run_findbugs = true
+  run_findbugs_override = true
   proguard_enabled = !is_debug
 }
 
 generate_jni("cronet_tests_jni_headers") {
   testonly = true
   sources = [
     "test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.java",
     "test/src/org/chromium/net/CronetTestUtil.java",
     "test/src/org/chromium/net/MockCertVerifier.java",
     "test/src/org/chromium/net/MockUrlRequestJobFactory.java",
@@ skipping 84 matching lines @@
 
   deps = [
     ":cronet_api",
     ":cronet_java",
     "//base:base_java",
     "//net/android:net_java_test_support",
     "//third_party/netty-tcnative:netty-tcnative",
     "//third_party/netty4:netty_all",
   ]
 
-  run_findbugs = true
+  run_findbugs_override = true
 }
 
 android_assets("cronet_test_apk_assets") {
   testonly = true
 
   # Need to use renaming_sources to maintain subdirectories.
   renaming_sources = [
     "test/assets/test/cacheable.txt",
     "test/assets/test/cacheable.txt.mock-http-headers",
     "test/assets/test/content_length_mismatch.html",
@@ skipping 38 matching lines @@
 
   deps = [
     ":cronet_test_apk_assets",
     ":cronet_test_apk_java",
     ":cronet_test_apk_resources",
     ":cronet_tests",
     "//base:base_java",
     "//third_party/netty-tcnative:netty-tcnative_all",
   ]
 
-  run_findbugs = true
+  run_findbugs_override = true
 }
 
 android_library("cronet_javatests") {
   testonly = true
 
   java_files = [
     "test/javatests/src/org/chromium/net/BidirectionalStreamQuicTest.java",
     "test/javatests/src/org/chromium/net/BidirectionalStreamTest.java",
     "test/javatests/src/org/chromium/net/ChromiumUrlRequestTest.java",
     "test/javatests/src/org/chromium/net/ChunkedWritableByteChannelTest.java",
@@ skipping 32 matching lines @@
   deps = [
     ":cronet_api",
     ":cronet_java",
     ":cronet_test_apk_java",
     "//base:base_java",
     "//base:base_java_test_support",
     "//net/android:net_java",
     "//net/android:net_java_test_support",
   ]
 
-  run_findbugs = true
+  run_findbugs_override = true
 }
 
 instrumentation_test_apk("cronet_test_instrumentation_apk") {
   apk_name = "CronetTestInstrumentation"
   apk_under_test = ":cronet_test_apk"
   android_manifest = "test/javatests/AndroidManifest.xml"
 
   deps = [
     ":cronet_api",
     ":cronet_java",
     ":cronet_javatests",
     ":cronet_test_apk_java",
     "//base:base_java",
     "//base:base_java_test_support",
     "//net/android:net_java",
     "//net/android:net_java_test_support",
   ]
   additional_apks = [ "//net/android:net_test_support_apk" ]
 
   data = [
     "//net/data/ssl/certificates/quic_test.example.com.crt",
     "//net/data/ssl/certificates/quic_test.example.com.key",
     "//net/data/ssl/certificates/quic_test.example.com.key.pkcs8",
     "//net/data/ssl/certificates/quic_test.example.com.key.sct",
   ]
 
   # TODO(jbudorick): Remove this once GN uses the generated .isolate files.
   isolate_file = "cronet_test_instrumentation_apk.isolate"
 
-  run_findbugs = true
+  run_findbugs_override = true
 }
 
 android_library("cronet_perf_test_apk_java") {
   testonly = true
   java_files =
       [ "test/javaperftests/src/org/chromium/net/CronetPerfTestActivity.java" ]
 
   deps = [
     ":cronet_api",
     ":cronet_java",
     ":cronet_javatests",
     ":cronet_test_apk_java",
     "//base:base_java",
   ]
 
-  run_findbugs = true
+  run_findbugs_override = true
 }
 
 android_apk("cronet_perf_test_apk") {
   testonly = true
   apk_name = "CronetPerfTest"
   android_manifest = "test/javaperftests/AndroidManifest.xml"
   native_libs = [ "libcronet_tests.so" ]
 
   deps = [
     ":cronet_perf_test_apk_java",
     ":cronet_test_apk_java",
     ":cronet_tests",
     "//base:base_java",
   ]
 
-  run_findbugs = true
+  run_findbugs_override = true
   proguard_enabled = true
   proguard_configs = [
     "proguard.cfg",
     "test/javaperftests/proguard.cfg",
   ]
 }
 
 test("cronet_unittests") {
   sources = [
     "//components/cronet/histogram_manager_unittest.cc",
@@ skipping 196 matching lines @@
     ":cronet_package_copy_native_lib",
     ":cronet_package_copy_native_lib_unstripped",
     ":generate_javadoc",
     ":generate_licenses",
     ":jar_cronet_api_source",
     ":jar_cronet_other_source",
     ":jar_cronet_sample_source",
     ":repackage_extracted_jars",
   ]
 }