Register versioned sdk dependency in module_bp_java_deps.json

java modules that link against a versioned sdk (sdk_version: <num>) get
the appropriate stub jar on its classpath, but the dependency is not
registered in its build graph. This CL registers this dependency for
module_bp_java_deps.json. Ideally, we should move this to `decodeSdkDep`
so that this dependendency becomes known to other tools that analyze
soong's module graph (e.g. soongdbg)

Test: go test ./java
Bug: 358608607
Bug: 356572093
Change-Id: Iab6efe7826d18dedfadbe4d34d78e7eb2888bd8d

java/base.go

@@ -2229,6 +2229,11 @@ func (j *Module) collectDeps(ctx android.ModuleContext) deps {
 			deps.classpath = append(deps.classpath, sdkDep.jars...)
 			deps.dexClasspath = append(deps.dexClasspath, sdkDep.jars...)
 			deps.aidlPreprocess = sdkDep.aidl
+			// Add the sdk module dependency to `compileDepNames`.
+			// This ensures that the dependency is reported in `module_bp_java_deps.json`
+			// TODO (b/358608607): Move this to decodeSdkDep
+			sdkSpec := android.SdkContext(j).SdkVersion(ctx)
+			j.compileDepNames = append(j.compileDepNames, fmt.Sprintf("sdk_%s_%s_android", sdkSpec.Kind.String(), sdkSpec.ApiLevel.String()))
 		} else {
 			deps.aidlPreprocess = sdkDep.aidl
 		}

java/jdeps_test.go

@@ -103,3 +103,23 @@ func TestCollectJavaLibraryPropertiesAddJarjarRules(t *testing.T) {
 		t.Errorf("Library.IDEInfo() Jarjar_rules = %v, want %v", dpInfo.Jarjar_rules[0], expected)
 	}
 }
+
+func TestCollectJavaLibraryLinkingAgainstVersionedSdk(t *testing.T) {
+	ctx := android.GroupFixturePreparers(
+		prepareForJavaTest,
+		FixtureWithPrebuiltApis(map[string][]string{
+			"29": {},
+		})).RunTestWithBp(t,
+		`
+		java_library {
+			name: "javalib",
+			srcs: ["foo.java"],
+			sdk_version: "29",
+		}
+	`)
+	module := ctx.ModuleForTests("javalib", "android_common").Module().(*Library)
+	dpInfo := &android.IdeInfo{}
+
+	module.IDEInfo(dpInfo)
+	android.AssertStringListContains(t, "IdeInfo.Deps should contain versioned sdk module", dpInfo.Deps, "sdk_public_29_android")
+}