API Lint: Archive lint errors

Adds reported lint errors to dist. This lets us track them and
build tooling on top.

Bug: 138440867
Test: make dist droid; ls -l out/dist/apilint
Change-Id: I75629e3d9e1a53d161d844dfac121a5998429e04

java/androidmk.go

@@ -605,10 +605,15 @@ func (dstubs *Droidstubs) AndroidMkEntries() android.AndroidMkEntries {
 
 					fmt.Fprintln(w, ".PHONY: checkapi")
 					fmt.Fprintln(w, "checkapi:",
-						dstubs.apiLintTimestamp.String())
+						dstubs.Name()+"-api-lint")
 
 					fmt.Fprintln(w, ".PHONY: droidcore")
 					fmt.Fprintln(w, "droidcore: checkapi")
+
+					if dstubs.apiLintReport != nil {
+						fmt.Fprintf(w, "$(call dist-for-goals,%s,%s:%s)\n", dstubs.Name()+"-api-lint",
+							dstubs.apiLintReport.String(), "apilint/"+dstubs.Name()+"-lint-report.txt")
+					}
 				}
 				if dstubs.checkNullabilityWarningsTimestamp != nil {
 					fmt.Fprintln(w, ".PHONY:", dstubs.Name()+"-check-nullability-warnings")

java/droiddoc.go

@@ -1183,6 +1183,7 @@ type Droidstubs struct {
 	updateCurrentApiTimestamp     android.WritablePath
 	checkLastReleasedApiTimestamp android.WritablePath
 	apiLintTimestamp              android.WritablePath
+	apiLintReport                 android.WritablePath
 
 	checkNullabilityWarningsTimestamp android.WritablePath
 
@@ -1535,6 +1536,8 @@ func (d *Droidstubs) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 		} else {
 			cmd.Flag("--api-lint")
 		}
+		d.apiLintReport = android.PathForModuleOut(ctx, "api_lint_report.txt")
+		cmd.FlagWithOutput("--report-even-if-suppressed ", d.apiLintReport)
 
 		d.inclusionAnnotationsFlags(ctx, cmd)
 		d.mergeAnnoDirFlags(ctx, cmd)