Rename two mojo interfaces ServiceWorkerProvider/ProviderHost

ServiceWorkerProvider/ProviderHost interfaces naming is somehow confusing
what "provider" means, because both of them mainly serve for the functionality
implementations of the javascript interface ServiceWorkerContainer,
see https://w3c.github.io/ServiceWorker/#serviceworkercontainer.

This CL renames these two interfaces to ServiceWorkerContainer/ContainerHost.

BUG=755861, 629701

Change-Id: I7595d7ec4e9ea4f7db091e5c17f262c2d6150177
Reviewed-on: https://chromium-review.googlesource.com/615094
Commit-Queue: Xiaofeng Zhang <[email protected]>
Reviewed-by: Nasko Oskov <[email protected]>
Reviewed-by: Matt Falkenhagen <[email protected]>
Reviewed-by: Makoto Shimazu <[email protected]>
Cr-Commit-Position: refs/heads/master@{#498374}
diff --git a/content/common/BUILD.gn b/content/common/BUILD.gn
index 119a5b7..6060e6eeb 100644
--- a/content/common/BUILD.gn
+++ b/content/common/BUILD.gn
@@ -628,10 +628,10 @@
     "renderer_host.mojom",
     "service_worker/embedded_worker.mojom",
     "service_worker/service_worker.mojom",
+    "service_worker/service_worker_container.mojom",
     "service_worker/service_worker_event_dispatcher.mojom",
     "service_worker/service_worker_installed_scripts_manager.mojom",
     "service_worker/service_worker_provider.mojom",
-    "service_worker/service_worker_provider_interfaces.mojom",
     "service_worker/service_worker_types.mojom",
     "storage_partition_service.mojom",
     "video_capture.mojom",