--- a/mobile/android/base/Makefile.in
+++ b/mobile/android/base/Makefile.in
@@ -304,17 +304,16 @@ ANNOTATION_PROCESSOR_JAR_FILES := $(DEPT
 # This annotation processing step also generates
 # GeneratedJNIWrappers.h and GeneratedJNINatives.h
 GeneratedJNIWrappers.cpp: $(ANNOTATION_PROCESSOR_JAR_FILES)
 GeneratedJNIWrappers.cpp: $(ALL_JARS)
 	$(JAVA) -classpath constants.jar:$(JAVA_BOOTCLASSPATH):$(JAVA_CLASSPATH):$(ANNOTATION_PROCESSOR_JAR_FILES) org.mozilla.gecko.annotationProcessors.AnnotationProcessor $(ALL_JARS)
 
 manifest := \
   AndroidManifest.xml.in \
-  fennec_ids.txt.in \
   $(NULL)
 
 PP_TARGETS += manifest
 
 # Certain source files need to be preprocessed.  This special rule
 # generates these files into generated/org/mozilla/gecko for
 # consumption by the build system and IDEs.
 
@@ -565,12 +564,10 @@ libs:: jni-stubs.inc GeneratedJNIWrapper
 	  echo && \
 	  echo '  make -C $(CURDIR) update-generated-wrappers' && \
 	  echo && \
 	  echo '* Repeat the build, and check in any changes.       *' && \
 	  echo '*****************************************************' && \
 	  exit 1)
 endif
 
-libs:: $(CURDIR)/fennec_ids.txt
-
 libs:: classes.dex
 	$(INSTALL) classes.dex $(FINAL_TARGET)

deleted file mode 100644
--- a/mobile/android/base/fennec_ids.txt.in
+++ /dev/null
@@ -1,2 +0,0 @@
-#filter slashslash
-// fennec_ids.txt needs to exist (for automation) but contains no content.

--- a/testing/testsuite-targets.mk
+++ b/testing/testsuite-targets.mk
@@ -264,17 +264,16 @@ stage-config: make-stage-dir
 stage-mach: make-stage-dir
 	@(cd $(topsrcdir)/python/mach && tar $(TAR_CREATE_FLAGS) - *) | (cd $(PKG_STAGE)/tools/mach && tar -xf -)
 	cp $(topsrcdir)/testing/tools/mach_test_package_bootstrap.py $(PKG_STAGE)/tools/mach_bootstrap.py
 	cp $(topsrcdir)/mach $(PKG_STAGE)
 
 stage-mochitest: make-stage-dir
 ifeq ($(MOZ_BUILD_APP),mobile/android)
 	$(MAKE) -C $(DEPTH)/testing/mochitest stage-package
-	$(NSINSTALL) $(DEPTH)/mobile/android/base/fennec_ids.txt $(PKG_STAGE)/mochitest
 endif
 
 stage-jstests: make-stage-dir
 	$(MAKE) -C $(DEPTH)/js/src/tests stage-package
 
 stage-gtest: make-stage-dir
 # FIXME: (bug 1200311) We should be generating the gtest xul as part of the build.
 	$(MAKE) -C $(DEPTH)/testing/gtest gtest

--- a/toolkit/mozapps/installer/upload-files-APK.mk
+++ b/toolkit/mozapps/installer/upload-files-APK.mk
@@ -64,34 +64,29 @@ UPLOAD_EXTRA_FILES += gecko-unsigned-una
 DIST_FILES += $(MOZ_CHILD_PROCESS_NAME)
 
 GECKO_APP_AP_PATH = $(topobjdir)/mobile/android/base
 
 ifdef ENABLE_TESTS
 INNER_ROBOCOP_PACKAGE=true
 ifeq ($(MOZ_BUILD_APP),mobile/android)
 UPLOAD_EXTRA_FILES += robocop.apk
-UPLOAD_EXTRA_FILES += fennec_ids.txt
 UPLOAD_EXTRA_FILES += geckoview_library/geckoview_library.zip
 UPLOAD_EXTRA_FILES += geckoview_library/geckoview_assets.zip
 
 # Robocop/Robotium tests, Android Background tests, and Fennec need to
 # be signed with the same key, which means release signing them all.
 
 ifndef MOZ_BUILD_MOBILE_ANDROID_WITH_GRADLE
 robocop_apk := $(topobjdir)/mobile/android/tests/browser/robocop/robocop-debug-unsigned-unaligned.apk
 else
 robocop_apk := $(topobjdir)/gradle/build/mobile/android/app/outputs/apk/app-automation-debug-androidTest-unaligned.apk
 endif
 
-# Normally, $(NSINSTALL) would be used instead of cp, but INNER_ROBOCOP_PACKAGE
-# is used in a series of commands that run under a "cd something", while
-# $(NSINSTALL) is relative.
 INNER_ROBOCOP_PACKAGE= \
-  cp $(GECKO_APP_AP_PATH)/fennec_ids.txt $(ABS_DIST) && \
   $(call RELEASE_SIGN_ANDROID_APK,$(robocop_apk),$(ABS_DIST)/robocop.apk)
 endif
 else
 INNER_ROBOCOP_PACKAGE=echo 'Testing is disabled - No Android Robocop for you'
 endif
 
 ifdef MOZ_ANDROID_PACKAGE_INSTALL_BOUNCER
 INNER_INSTALL_BOUNCER_PACKAGE=true