Add third_party_licenses for libraries that vendor Dagger. (#1897)

Additionally, clean up unused code.

Author: vkryachko

buildSrc/build.gradle

@@ -29,14 +29,6 @@ repositories {
     }
 }
 
-sourceSets {
-    main {
-        java {
-            srcDir '../third_party/jsoup/src/main/java'
-        }
-    }
-}
-
 dependencies {
     implementation 'org.jsoup:jsoup:1.11.2'
     implementation 'digital.wup:android-maven-publish:3.6.2'

buildSrc/src/main/java/com/google/firebase/gradle/plugins/VendorPlugin.kt

@@ -33,6 +33,7 @@ import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.logging.Logger
+import org.gradle.kotlin.dsl.apply
 
 class VendorPlugin : Plugin<Project> {
     override fun apply(project: Project) {
@@ -44,6 +45,7 @@ class VendorPlugin : Plugin<Project> {
     }
 
     fun configureAndroid(project: Project) {
+        project.apply(plugin = "LicenseResolverPlugin")
 
         val vendor = project.configurations.create("vendor")
         project.configurations.all {

buildSrc/src/main/java/com/google/firebase/gradle/plugins/license/ThirdPartyLicensesExtension.java

@@ -18,19 +18,16 @@
 import java.util.ArrayList;
 import java.util.List;
 
-class ThirdPartyLicensesExtension {
+public class ThirdPartyLicensesExtension {
     private final ArrayList<CustomLicense> customLicenses = new ArrayList<>();
 
-    public ThirdPartyLicensesExtension() {
-    }
-
     /** Add a library with its licenses in passed-in files(relative to rootDir). Only file URIs are supported*/
-    void add(String name, String... licenseUris) {
+    public void add(String name, String... licenseUris) {
         customLicenses.add(new CustomLicense(name, licenseUris));
     }
 
-    public static class CustomLicense implements Serializable {
-        public final String name;
+    static class CustomLicense implements Serializable {
+        final String name;
         final List<URI> licenseUris = new ArrayList<>();
 
         CustomLicense(String name, String[] licenseUris) {

firebase-inappmessaging-display/firebase-inappmessaging-display.gradle

@@ -60,6 +60,11 @@ android {
     }
 }
 
+
+thirdPartyLicenses {
+    add 'Dagger', "file://${rootDir}/third_party/licenses/apache-2.0.txt"
+}
+
 dependencies {
     implementation project(':firebase-common')
     implementation project(':firebase-components')

firebase-inappmessaging/firebase-inappmessaging.gradle

@@ -103,6 +103,11 @@ configurations.all {
     }
 }
 
+
+thirdPartyLicenses {
+    add 'Dagger', "file://${rootDir}/third_party/licenses/apache-2.0.txt"
+}
+
 dependencies {
     implementation project(':firebase-abt')
     implementation project(':firebase-common')