Expect added members for instrumented modules

hiddenapi expects that all members in a class to have corresponding hidden
API flags. However, this can't be satisfied when the java module having
the class is instrumented; JaCoCo added a few number of synthetic
members. In this case, give 'no-force-assign-all' option to the hidden
api tool so that it doesn't complain about the synthetic methods.

Also, disabling instrumenting jacocoagent itself, because it doesn't
make sense.

Exempt-From-Owner-Approval: PS3 fixes a typo in a comment. PS2 got ORV.

Bug: 149353192
Test: SKIP_ABI_CHECKS=true EMMA_INSTRUMENT=true
EMMA_INSTRUMENT_FRAMEWORK=true SKIP_BOOT_JARS_CHECK=true m
out/soong/.intermediates/external/apache-xml/apache-xml/android_common_com.android.art.debug/hiddenapi/unaligned/unaligned.jar
Change-Id: Ibaf383c439945ab664e885af319548b56e2c8cb6

java/hiddenapi.go

@@ -159,9 +159,21 @@ func hiddenAPIEncodeDex(ctx android.ModuleContext, output android.WritablePath,
 		tmpOutput = android.PathForModuleOut(ctx, "hiddenapi", "unaligned", "unaligned.jar")
 		tmpDir = android.PathForModuleOut(ctx, "hiddenapi", "unaligned")
 	}
+
+	enforceHiddenApiFlagsToAllMembers := true
 	// If frameworks/base doesn't exist we must be building with the 'master-art' manifest.
 	// Disable assertion that all methods/fields have hidden API flags assigned.
 	if !ctx.Config().FrameworksBaseDirExists(ctx) {
+		enforceHiddenApiFlagsToAllMembers = false
+	}
+	// b/149353192: when a module is instrumented, jacoco adds synthetic members
+	// $jacocoData and $jacocoInit. Since they don't exist when building the hidden API flags,
+	// don't complain when we don't find hidden API flags for the synthetic members.
+	if j, ok := ctx.Module().(*Library); ok && j.shouldInstrument(ctx) {
+		enforceHiddenApiFlagsToAllMembers = false
+	}
+
+	if !enforceHiddenApiFlagsToAllMembers {
 		hiddenapiFlags = "--no-force-assign-all"
 	}