[task scheduler] Move files from build_scheduler/ to task_scheduler/

task_scheduler/go/scheduling/cache_wrapper.go

-package task_scheduler
+package scheduling
 
 import (
         "fmt"
 
-        "go.skia.org/infra/build_scheduler/go/db"
+        "go.skia.org/infra/task_scheduler/go/db"
 )
 
 // cacheWrapper is an implementation of db.TaskCache which allows insertion of
 // fake Tasks. Use one per task spec.
 type cacheWrapper struct {
         byCommit map[string]*db.Task
         byId     map[string]*db.Task
         c        db.TaskCache
         known    bool
 }
@@ skipping 48 matching lines @@
 
 // insert adds a task to the cacheWrapper's fake layer so that it will be
 // included in query results but not actually inserted into the DB.
 func (c *cacheWrapper) insert(t *db.Task) {
         c.byId[t.Id] = t
         for _, commit := range t.Commits {
                 c.byCommit[commit] = t
         }
         c.known = true
 }