fix: declare API surface's dependencies as 'api'

Adding more artifacts to be declared as 'api' because they appear
in public API surface. See the comment of the following issue
for the analysis:
googleapis#1534

build.gradle

@@ -109,6 +109,7 @@ subprojects {
       'maven.io_grpc_grpc_core': "io.grpc:grpc-core:${libraries['version.io_grpc']}",
       'maven.io_grpc_grpc_context': "io.grpc:grpc-context:${libraries['version.io_grpc']}",
       'maven.io_grpc_grpc_stub': "io.grpc:grpc-stub:${libraries['version.io_grpc']}",
+      'maven.io_grpc_grpc_api': "io.grpc:grpc-api:${libraries['version.io_grpc']}",
       'maven.io_grpc_grpc_auth': "io.grpc:grpc-auth:${libraries['version.io_grpc']}",
       'maven.io_grpc_grpc_protobuf': "io.grpc:grpc-protobuf:${libraries['version.io_grpc']}",
       'maven.io_grpc_grpc_netty_shaded': "io.grpc:grpc-netty-shaded:${libraries['version.io_grpc']}",

gax-grpc/build.gradle

@@ -8,20 +8,21 @@ archivesBaseName = "gax-grpc"
 project.version = "2.6.1-SNAPSHOT" // {x-version-update:gax-grpc:current}
 
 dependencies {
-  api (project(':gax'),
-    libraries['maven.com_google_auth_google_auth_library_credentials'])
-
-  implementation(libraries['maven.io_grpc_grpc_stub'],
-    libraries['maven.io_grpc_grpc_auth'],
-    libraries['maven.io_grpc_grpc_protobuf'],
+  api(project(':gax'),
+    libraries['maven.com_google_api_api_common'],
+    libraries['maven.com_google_api_grpc_proto_google_common_protos'],
+    libraries['maven.com_google_auth_google_auth_library_credentials'],
     libraries['maven.com_google_guava_guava'],
+    libraries['maven.io_grpc_grpc_api'],
+    libraries['maven.org_threeten_threetenbp'])
+
+  implementation(libraries['maven.com_google_auth_google_auth_library_oauth2_http'],
     libraries['maven.com_google_code_findbugs_jsr305'],
-    libraries['maven.org_threeten_threetenbp'],
-    libraries['maven.com_google_auth_google_auth_library_oauth2_http'],
-    libraries['maven.com_google_api_grpc_proto_google_common_protos'],
-    libraries['maven.com_google_api_api_common'],
+    libraries['maven.io_grpc_grpc_alts'],
+    libraries['maven.io_grpc_grpc_auth'],
     libraries['maven.io_grpc_grpc_netty_shaded'],
-    libraries['maven.io_grpc_grpc_alts'])
+    libraries['maven.io_grpc_grpc_protobuf'],
+    libraries['maven.io_grpc_grpc_stub'])
 
   compileOnly libraries['maven.com_google_auto_value_auto_value']
 

gax-httpjson/build.gradle

@@ -8,24 +8,24 @@ archivesBaseName = "gax-httpjson"
 project.version = "0.91.1-SNAPSHOT" // {x-version-update:gax-httpjson:current}
 
 dependencies {
-  api ( project(':gax'),
-    libraries['maven.com_google_auth_google_auth_library_credentials'])
-
-  implementation( libraries['maven.com_google_protobuf'],
-    libraries['maven.com_google_protobuf_java_util'],
+  api(project(':gax'),
+    libraries['maven.com_google_api_api_common'],
+    libraries['maven.com_google_api_grpc_proto_google_common_protos'],
+    libraries['maven.com_google_auth_google_auth_library_credentials'],
     libraries['maven.com_google_code_gson_gson'],
     libraries['maven.com_google_guava_guava'],
-    libraries['maven.com_google_code_findbugs_jsr305'],
-    libraries['maven.org_threeten_threetenbp'],
     libraries['maven.com_google_http_client_google_http_client'],
+    libraries['maven.com_google_protobuf'],
+    libraries['maven.org_threeten_threetenbp'])
+
+  implementation(libraries['maven.com_google_auth_google_auth_library_oauth2_http'],
+    libraries['maven.com_google_code_findbugs_jsr305'],
     libraries['maven.com_google_http_client_google_http_client_gson'],
-    libraries['maven.com_google_auth_google_auth_library_oauth2_http'],
-    libraries['maven.com_google_api_grpc_proto_google_common_protos'],
-    libraries['maven.com_google_api_api_common'])
+    libraries['maven.com_google_protobuf_java_util'])
 
   compileOnly libraries['maven.com_google_auto_value_auto_value']
 
-  testImplementation( project(':gax').sourceSets.test.output,
+  testImplementation(project(':gax').sourceSets.test.output,
     libraries['maven.junit_junit'],
     libraries['maven.org_mockito_mockito_core'],
     libraries['maven.com_google_truth_truth'])

gax/build.gradle

@@ -8,21 +8,21 @@ archivesBaseName = "gax"
 project.version = "2.6.1-SNAPSHOT" // {x-version-update:gax:current}
 
 dependencies {
-  api libraries['maven.com_google_auth_google_auth_library_credentials']
+  api(libraries['maven.com_google_api_api_common'],
+    libraries['maven.com_google_auth_google_auth_library_credentials'],
+    libraries['maven.org_threeten_threetenbp'])
 
-  implementation (libraries['maven.com_google_guava_guava'],
+  implementation(libraries['maven.com_google_auth_google_auth_library_oauth2_http'],
     libraries['maven.com_google_code_findbugs_jsr305'],
-    libraries['maven.org_threeten_threetenbp'],
-    libraries['maven.com_google_auth_google_auth_library_oauth2_http'],
-    libraries['maven.com_google_api_api_common'],
+    libraries['maven.com_google_guava_guava'],
     libraries['maven.io_opencensus_opencensus_api'])
 
   compileOnly libraries['maven.com_google_auto_value_auto_value']
 
-  testImplementation( libraries['maven.junit_junit'],
+  testImplementation(libraries['maven.junit_junit'],
     libraries['maven.org_mockito_mockito_core'],
     libraries['maven.com_google_truth_truth'],
-    libraries['maven.com_google_auto_value_auto_value'] )
+    libraries['maven.com_google_auto_value_auto_value'])
 
   annotationProcessor libraries['maven.com_google_auto_value_auto_value']
   testAnnotationProcessor libraries['maven.com_google_auto_value_auto_value']