Remove installFiles from ModuleBase.

This is to limit the direct accesses to the internal fields of a
module in order to better support incremental caching. To access
the install files data from singleton context or other modules'
context use providers thru the provided wrapper; to access it
from the same module inside GenerateBuildActions use ctx which is
short-lived only inside this method.

Bug: 358425833
Test: CI
Change-Id: I337b07a2ef95fb2a898ac2f9277160a3f76a603c

cc/cmake_snapshot.go

@@ -476,7 +476,7 @@ func (m *CmakeSnapshot) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 		var prebuiltsList android.Paths
 
 		ctx.VisitDirectDepsWithTag(cmakeSnapshotPrebuiltTag, func(dep android.Module) {
-			for _, file := range dep.FilesToInstall() {
+			for _, file := range android.ModuleFilesToInstall(ctx, dep) {
 				prebuiltsList = append(prebuiltsList, file)
 			}
 		})