Removes usage of native base::android::GetApplicationContext()

webrtc/test/BUILD.gn

Index: webrtc/test/BUILD.gn
diff --git a/webrtc/test/BUILD.gn b/webrtc/test/BUILD.gn
index aa6f322313c113657e97e50e215b957be5c80ef0..a0d262b165583f3910ed91db6129c9376ceda479 100644
--- a/webrtc/test/BUILD.gn
+++ b/webrtc/test/BUILD.gn
@@ -532,3 +532,17 @@ rtc_source_set("audio_codec_mocks") {
     "//testing/gmock",
   ]
 }
+
+if (is_android) {
+  android_library("native_test_java") {
+    testonly = true
+    java_files = [
+      "android/org/webrtc/native_test/RTCNativeUnitTest.java",
+      "android/org/webrtc/native_test/RTCNativeUnitTestActivity.java",
+    ]
+    deps = [
+      "//testing/android/native_test:native_test_java",
+      "//webrtc/base:base_java",
+    ]
+  }
+}