Don't use merged manifest for android_library modules

Don't use the merged manifest for android_library modules.  We
still have to run manifest merger for android_library modules
because Make can't handle transitive dependencies, so it will
continue to merge the manifests at each library, and then merge
the manifests of direct dependencies into the final application.

Bug: 113294940
Test: m checkbuild
Change-Id: Ia8f9f910bd0a134730ddf2d542460eeddbc0a075
diff --git a/java/android_manifest.go b/java/android_manifest.go
index 8dc3b47..92a4b77 100644
--- a/java/android_manifest.go
+++ b/java/android_manifest.go
@@ -41,8 +41,9 @@
 	},
 	"libs")
 
-func manifestMerger(ctx android.ModuleContext, manifest android.Path, sdkContext sdkContext,
-	staticLibManifests android.Paths, isLibrary, uncompressedJNI, useEmbeddedDex, usesNonSdkApis bool) android.Path {
+// Uses manifest_fixer.py to inject minSdkVersion, etc. into an AndroidManifest.xml
+func manifestFixer(ctx android.ModuleContext, manifest android.Path, sdkContext sdkContext,
+	isLibrary, uncompressedJNI, usesNonSdkApis, useEmbeddedDex bool) android.Path {
 
 	var args []string
 	if isLibrary {
@@ -79,35 +80,35 @@
 		deps = append(deps, apiFingerprint)
 	}
 
-	// Inject minSdkVersion into the manifest
 	fixedManifest := android.PathForModuleOut(ctx, "manifest_fixer", "AndroidManifest.xml")
 	ctx.Build(pctx, android.BuildParams{
-		Rule:      manifestFixerRule,
-		Input:     manifest,
-		Implicits: deps,
-		Output:    fixedManifest,
+		Rule:        manifestFixerRule,
+		Description: "fix manifest",
+		Input:       manifest,
+		Implicits:   deps,
+		Output:      fixedManifest,
 		Args: map[string]string{
 			"minSdkVersion":    sdkVersionOrDefault(ctx, sdkContext.minSdkVersion()),
 			"targetSdkVersion": targetSdkVersion,
 			"args":             strings.Join(args, " "),
 		},
 	})
-	manifest = fixedManifest
 
-	// Merge static aar dependency manifests if necessary
-	if len(staticLibManifests) > 0 {
-		mergedManifest := android.PathForModuleOut(ctx, "manifest_merger", "AndroidManifest.xml")
-		ctx.Build(pctx, android.BuildParams{
-			Rule:      manifestMergerRule,
-			Input:     manifest,
-			Implicits: staticLibManifests,
-			Output:    mergedManifest,
-			Args: map[string]string{
-				"libs": android.JoinWithPrefix(staticLibManifests.Strings(), "--libs "),
-			},
-		})
-		manifest = mergedManifest
-	}
+	return fixedManifest
+}
 
-	return manifest
+func manifestMerger(ctx android.ModuleContext, manifest android.Path, staticLibManifests android.Paths) android.Path {
+	mergedManifest := android.PathForModuleOut(ctx, "manifest_merger", "AndroidManifest.xml")
+	ctx.Build(pctx, android.BuildParams{
+		Rule:        manifestMergerRule,
+		Description: "merge manifest",
+		Input:       manifest,
+		Implicits:   staticLibManifests,
+		Output:      mergedManifest,
+		Args: map[string]string{
+			"libs": android.JoinWithPrefix(staticLibManifests.Strings(), "--libs "),
+		},
+	})
+
+	return mergedManifest
 }