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

build_scheduler/go/task_scheduler/cache_wrapper.go

Index: build_scheduler/go/task_scheduler/cache_wrapper.go
diff --git a/build_scheduler/go/task_scheduler/cache_wrapper.go b/build_scheduler/go/task_scheduler/cache_wrapper.go
deleted file mode 100644
index 2d3506031cd5902ac17f0dd93b4600c180f6d080..0000000000000000000000000000000000000000
--- a/build_scheduler/go/task_scheduler/cache_wrapper.go
+++ /dev/null
@@ -1,74 +0,0 @@
-package task_scheduler
-
-import (
-	"fmt"
-
-	"go.skia.org/infra/build_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
-}
-
-func newCacheWrapper(c db.TaskCache) *cacheWrapper {
-	return &cacheWrapper{
-		byCommit: map[string]*db.Task{},
-		byId:     map[string]*db.Task{},
-		c:        c,
-		known:    false,
-	}
-}
-
-// See documentation for TaskCache interface.
-func (c *cacheWrapper) GetTask(id string) (*db.Task, error) {
-	if t, ok := c.byId[id]; ok {
-		return t, nil
-	}
-	return c.c.GetTask(id)
-}
-
-// See documentation for TaskCache interface.
-func (c *cacheWrapper) GetTaskForCommit(repo, commit, name string) (*db.Task, error) {
-	if t, ok := c.byCommit[commit]; ok {
-		return t, nil
-	}
-	return c.c.GetTaskForCommit(repo, commit, name)
-}
-
-// See documentation for TaskCache interface.
-func (c *cacheWrapper) GetTasksForCommits(string, []string) (map[string]map[string]*db.Task, error) {
-	return nil, fmt.Errorf("cacheWrapper.GetTasksForCommits not implemented.")
-}
-
-// See documentation for TaskCache interface.
-func (c *cacheWrapper) KnownTaskName(repo, name string) bool {
-	if c.known {
-		return true
-	}
-	return c.c.KnownTaskName(repo, name)
-}
-
-// See documentation for TaskCache interface.
-func (c *cacheWrapper) UnfinishedTasks() ([]*db.Task, error) {
-	return nil, fmt.Errorf("cacheWrapper.UnfinishedTasks not implemented.")
-}
-
-// See documentation for TaskCache interface.
-func (c *cacheWrapper) Update() error {
-	return fmt.Errorf("cacheWrapper.Update not implemented.")
-}
-
-// 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
-}