Creating new gn arg: enable_all_proguard_optimizations.

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 359 matching lines @@
 
 # cronet_sample_test_apk_resources is identical to
 # cronet_sample_apk_resources. The two have to be different targets because
 # targets which are common between the "instrumentation test apk" and the
 # "tested apk" are removed from the "instrumentation test apk".
 android_resources("cronet_sample_test_apk_resources") {
   resource_dirs = [ "sample/res" ]
   android_manifest = "sample/AndroidManifest.xml"
 }
 
-instrumentation_test_apk("cronet_sample_test_apk") {
-  apk_name = "CronetSampleTest"
-  apk_under_test = ":cronet_sample_apk"
-  android_manifest = "sample/javatests/AndroidManifest.xml"
-  java_files = [
-    "sample/javatests/src/org/chromium/cronet_sample_apk/Criteria.java",
-    "sample/javatests/src/org/chromium/cronet_sample_apk/CronetSampleTest.java",
-  ]
+if (!enable_all_proguard_optimizations) {
+  instrumentation_test_apk("cronet_sample_test_apk") {
+    apk_name = "CronetSampleTest"
+    apk_under_test = ":cronet_sample_apk"
+    android_manifest = "sample/javatests/AndroidManifest.xml"
+    java_files = [
+      "sample/javatests/src/org/chromium/cronet_sample_apk/Criteria.java",
+      "sample/javatests/src/org/chromium/cronet_sample_apk/CronetSampleTest.java",
+    ]
 
-  deps = [
-    ":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" ]
+    deps = [
+      ":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_override = true
-  proguard_enabled = !is_java_debug
+    run_findbugs_override = true
+    proguard_enabled = !is_java_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",
     "test/src/org/chromium/net/NativeTestServer.java",
@@ skipping 480 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",
   ]
 }