[Android] Suppress findbugs hardcoded filename warning.

We use a hardcoded file to determine timeout scaling. Suppressing
findbugs warning about using the hardcoded filename in the
OnDeviceInstrumentationDriver class.

BUG=
TBR=nyquist@chromium.org

Review URL: https://codereview.chromium.org/1510493013

Cr-Commit-Position: refs/heads/master@{#364483}

testing/android/driver/BUILD.gn

@@ -11,6 +11,7 @@ android_apk("driver_apk") {
   testonly = true
 
   deps = [
+    "//base:base_java",
     "//base:base_java_test_support",
     "//testing/android/appurify_support:appurify_support_java",
     "//testing/android/broker:broker_java",

testing/android/driver/java/src/org/chromium/test/driver/OnDeviceInstrumentationDriver.java

@@ -13,6 +13,7 @@ import android.os.Environment;
 import android.test.InstrumentationTestRunner;
 import android.util.Log;
 
+import org.chromium.base.annotations.SuppressFBWarnings;
 import org.chromium.base.test.util.ScalableTimeout;
 import org.chromium.test.broker.OnDeviceInstrumentationBroker;
 import org.chromium.test.reporter.TestStatusReceiver;
@@ -66,6 +67,7 @@ public class OnDeviceInstrumentationDriver extends Instrumentation {
         @param arguments The arguments to parse.
      */
     @Override
+    @SuppressFBWarnings("DMI_HARDCODED_ABSOLUTE_FILENAME")
     public void onCreate(Bundle arguments) {
         mTargetArgs = new Bundle(arguments);
         mTargetPackage = arguments.getString(EXTRA_TARGET_PACKAGE);
@@ -145,6 +147,7 @@ public class OnDeviceInstrumentationDriver extends Instrumentation {
 
     /** Clean up the reporting service. */
     @Override
+    @SuppressFBWarnings("DMI_HARDCODED_ABSOLUTE_FILENAME")
     public void onDestroy() {
         super.onDestroy();
         if (mTimeoutScale != null) {