Include jacoco in the ART boot image if EMMA_INSTRUMENT_FRAMEWORK=true.

Test: aosp_walleye-userdebug boots.

Test: Coverage build boots:
  $ lunch aosp_walleye-userdebug
  $ cd $ANDROID_BUILD_TOP
  $ build/soong/soong_ui.bash --make-mode droid \
    SKIP_ABI_CHECKS=true \
    TARGET_PRODUCT=aosp_walleye \
    TARGET_BUILD_VARIANT=userdebug \
    EMMA_INSTRUMENT=true \
    NATIVE_COVERAGE=true
  $ adb reboot bootloader && fastboot flashall -w

Test: Coverage build with framework coverage boots:
  $ lunch aosp_walleye-userdebug
  $ cd $ANDROID_BUILD_TOP
  $ build/soong/soong_ui.bash --make-mode droid \
    SKIP_ABI_CHECKS=true \
    TARGET_PRODUCT=aosp_walleye \
    TARGET_BUILD_VARIANT=userdebug \
    EMMA_INSTRUMENT=true \
    EMMA_INSTRUMENT_FRAMEWORK=true \
    NATIVE_COVERAGE=true
  $ adb reboot bootloader && fastboot flashall -w

Test: Static coverage build with framework coverage boots:
  $ lunch aosp_walleye-userdebug
  $ cd $ANDROID_BUILD_TOP
  $ build/soong/soong_ui.bash --make-mode droid \
    SKIP_ABI_CHECKS=true \
    TARGET_PRODUCT=aosp_walleye \
    TARGET_BUILD_VARIANT=userdebug \
    EMMA_INSTRUMENT=true \
    EMMA_INSTRUMENT_FRAMEWORK=true \
    EMMA_INSTRUMENT_STATIC=true \
    NATIVE_COVERAGE=true
  $ adb reboot bootloader && fastboot flashall -w

Change-Id: Iaa198b8505aaff36e6685559642ff721637ce55f
diff --git a/apex/apex.go b/apex/apex.go
index b27b54e..55f67e7 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -692,6 +692,12 @@
 	ctx.AddFarVariationDependencies(ctx.Config().AndroidCommonTarget.Variations(),
 		javaLibTag, a.properties.Java_libs...)
 
+	// With EMMA_INSTRUMENT_FRAMEWORK=true the ART boot image includes jacoco library.
+	if a.artApex && ctx.Config().IsEnvTrue("EMMA_INSTRUMENT_FRAMEWORK") {
+		ctx.AddFarVariationDependencies(ctx.Config().AndroidCommonTarget.Variations(),
+			javaLibTag, "jacocoagent")
+	}
+
 	if String(a.properties.Key) == "" {
 		ctx.ModuleErrorf("key is missing")
 		return