Add source file provider for genrule/srcs, python libraries and rust libraries.

Change-Id: I2d7d4684a10c15aeecc27b8db800ab27a807d2e2
diff --git a/python/python.go b/python/python.go
index 7d77ca7..b4617c8 100644
--- a/python/python.go
+++ b/python/python.go
@@ -430,6 +430,7 @@
 // GenerateAndroidBuildActions performs build actions common to all Python modules
 func (p *PythonLibraryModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	expandedSrcs := android.PathsForModuleSrcExcludes(ctx, p.properties.Srcs, p.properties.Exclude_srcs)
+	ctx.SetProvider(blueprint.SrcsFileProviderKey, blueprint.SrcsFileProviderData{SrcPaths: expandedSrcs.Strings()})
 
 	// expand data files from "data" property.
 	expandedData := android.PathsForModuleSrc(ctx, p.properties.Data)