Set testonly to true for targets that depends on base_java_test_support

base/BUILD.gn

 # Copyright (c) 2013 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.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
@@ skipping 2309 matching lines @@
     # (with the actual correct values) will be created when creating an apk.
     jar_excluded_patterns = [
       "*/BuildConfig.class",
       "*/NativeLibraries.class",
       "*/NativeLibraries##*.class",
     ]
   }
 
   # GYP: //base.gyp:base_javatests
   android_library("base_javatests") {
+    testonly = true
     deps = [
       ":base_java",
       ":base_java_test_support",
     ]
     java_files = [
       "android/javatests/src/org/chromium/base/AdvancedMockContextTest.java",
       "android/javatests/src/org/chromium/base/ApiCompatibilityUtilsTest.java",
       "android/javatests/src/org/chromium/base/CommandLineInitUtilTest.java",
       "android/javatests/src/org/chromium/base/CommandLineTest.java",
       "android/javatests/src/org/chromium/base/ObserverListTest.java",
       "android/javatests/src/org/chromium/base/metrics/RecordHistogramTest.java",
     ]
   }
 
   # GYP: //base.gyp:base_java_test_support
   android_library("base_java_test_support") {
+    testonly = true
     deps = [
       ":base_java",
       "//testing/android/reporter:reporter_java",
     ]
     java_files = [
       "test/android/javatests/src/org/chromium/base/test/BaseActivityInstrumentationTestCase.java",
       "test/android/javatests/src/org/chromium/base/test/BaseChromiumInstrumentationTestRunner.java",
       "test/android/javatests/src/org/chromium/base/test/BaseInstrumentationTestRunner.java",
       "test/android/javatests/src/org/chromium/base/test/BaseTestResult.java",
       "test/android/javatests/src/org/chromium/base/test/util/AdvancedMockContext.java",
@@ skipping 76 matching lines @@
   # GYP: //base/base.gyp:base_native_libraries_gen
   java_cpp_template("base_native_libraries_gen") {
     sources = [
       "android/java/templates/NativeLibraries.template",
     ]
     package_name = "org/chromium/base/library_loader"
   }
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
+    testonly = true
     deps = [
       ":base_java",
     ]
     java_files = [
       "test/android/java/src/org/chromium/base/ContentUriTestUtils.java",
       "test/android/java/src/org/chromium/base/TestSystemMessageHandler.java",
     ]
   }
 }