Revert of GN: Enable proguard for apks

chrome/android/BUILD.gn

Index: chrome/android/BUILD.gn
diff --git a/chrome/android/BUILD.gn b/chrome/android/BUILD.gn
index 2e42ba84e94c3e11d318969c831cfc5d98d59d50..31c4d25c8018389fd2f99659e67dedd6a7ae9f1c 100644
--- a/chrome/android/BUILD.gn
+++ b/chrome/android/BUILD.gn
@@ -455,6 +455,7 @@
 
 # GYP: //chrome/android/chrome_apk.gyp:chrome_public_test_apk
 instrumentation_test_apk("chrome_public_test_apk") {
+  # TODO(GYP,cjhopman): Does this need version code/name?
   apk_name = "ChromePublicTest"
   apk_under_test = ":chrome_public_apk"
   android_manifest = chrome_public_test_apk_manifest
@@ -463,5 +464,4 @@
     "//chrome/android:chrome_shared_test_java",
   ]
   isolate_file = "../chrome_public_test_apk.isolate"
-  proguard_enabled = !is_debug
-}
+}