Begin optionalizing lb policies: initial code movement
diff --git a/package.xml b/package.xml
index a40cd16..9975360 100644
--- a/package.xml
+++ b/package.xml
@@ -200,9 +200,9 @@
     <file baseinstalldir="/" name="src/core/lib/client_config/client_config.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/connector.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/initial_connect_string.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/client_config/lb_policies/load_balancer_api.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/client_config/lb_policies/pick_first.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/client_config/lb_policies/round_robin.h" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/load_balancer_api.h" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/pick_first/pick_first.h" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/round_robin/round_robin.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/lb_policy.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/lb_policy_factory.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/lb_policy_registry.h" role="src" />
@@ -262,7 +262,7 @@
     <file baseinstalldir="/" name="src/core/lib/json/json_common.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/json/json_reader.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/json/json_writer.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/proto/grpc/lb/v0/load_balancer.pb.h" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/auth_filters.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/b64.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/credentials.h" role="src" />
@@ -349,9 +349,9 @@
     <file baseinstalldir="/" name="src/core/lib/client_config/connector.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/default_initial_connect_string.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/initial_connect_string.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/client_config/lb_policies/load_balancer_api.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/client_config/lb_policies/pick_first.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/client_config/lb_policies/round_robin.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/load_balancer_api.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/pick_first/pick_first.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/round_robin/round_robin.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/lb_policy.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/lb_policy_factory.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/lb_policy_registry.c" role="src" />
@@ -417,7 +417,7 @@
     <file baseinstalldir="/" name="src/core/lib/json/json_reader.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/json/json_string.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/json/json_writer.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/proto/grpc/lb/v0/load_balancer.pb.c" role="src" />
+    <file baseinstalldir="/" name="src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/b64.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/client_auth_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/security/credentials.c" role="src" />