Move all ProvisionFetcher classes out of android/ subdirectories.

media/mojo/interfaces/BUILD.gn

Index: media/mojo/interfaces/BUILD.gn
diff --git a/media/mojo/interfaces/BUILD.gn b/media/mojo/interfaces/BUILD.gn
index 23349c328d96fba7cec732294d8afedd98460efa..4a003f61b688ba48e708194434141ab047fecdf5 100644
--- a/media/mojo/interfaces/BUILD.gn
+++ b/media/mojo/interfaces/BUILD.gn
@@ -16,6 +16,7 @@ mojom("interfaces") {
     "media_service.mojom",
     "media_types.mojom",
     "output_protection.mojom",
+    "provision_fetcher.mojom",
     "renderer.mojom",
     "video_decoder.mojom",
   ]
@@ -24,10 +25,6 @@ mojom("interfaces") {
     sources += [ "platform_verification.mojom" ]
   }
 
-  if (is_android) {
-    sources += [ "provision_fetcher.mojom" ]
-  }
-
   public_deps = [
     "//mojo/common:common_custom_types",
     "//services/service_manager/public/interfaces",