When building AutoFactory, pick up AutoService via `<annotationProces…

…sorPaths>`.

The annotation dependency for `@AutoService` is now a regular compile-scoped dependency. This prevents errors from overeager consumers that can't deal with missing annotation class files.

This change is equivalent to the one we made for AutoValue in #1046.

Fixes #744.

RELNOTES=AutoService dependency is now a regular compile-scoped dependency.
PiperOrigin-RevId: 367219456

factory/pom.xml

@@ -36,6 +36,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <auto-service.version>1.0</auto-service.version>
     <auto-value.version>1.8</auto-value.version>
     <java.version>1.8</java.version>
     <guava.version>30.1.1-jre</guava.version>
@@ -77,17 +78,10 @@
       <artifactId>auto-value-annotations</artifactId>
       <version>${auto-value.version}</version>
     </dependency>
-    <dependency>
-      <groupId>com.google.auto.value</groupId>
-      <artifactId>auto-value</artifactId>
-      <version>${auto-value.version}</version>
-      <scope>provided</scope>
-    </dependency>
     <dependency>
       <groupId>com.google.auto.service</groupId>
-      <artifactId>auto-service</artifactId>
-      <version>1.0</version>
-      <scope>provided</scope>
+      <artifactId>auto-service-annotations</artifactId>
+      <version>${auto-service.version}</version>
     </dependency>
     <dependency>
       <groupId>net.ltgt.gradle.incap</groupId>
@@ -160,6 +154,18 @@
           <compilerArgument>-Xlint:all</compilerArgument>
           <showWarnings>true</showWarnings>
           <showDeprecation>true</showDeprecation>
+          <annotationProcessorPaths>
+            <path>
+              <groupId>com.google.auto.service</groupId>
+              <artifactId>auto-service</artifactId>
+              <version>${auto-service.version}</version>
+            </path>
+            <path>
+              <groupId>com.google.auto.value</groupId>
+              <artifactId>auto-value</artifactId>
+              <version>${auto-value.version}</version>
+            </path>
+          </annotationProcessorPaths>
         </configuration>
         <dependencies>
           <dependency>