Lift BazelHandler interface into android/

Because it's commonly useful and not cc/ specific
Also export GenerateBazelBuildActions and update uses

Test: Existing tests pass
Change-Id: Ibc6858bb1129afba181a7686dda432defe33b00d
diff --git a/cc/cc.go b/cc/cc.go
index 39d89e5..e4f4761 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -589,17 +589,6 @@
 	installInRoot() bool
 }
 
-// bazelHandler is the interface for a helper object related to deferring to Bazel for
-// processing a module (during Bazel mixed builds). Individual module types should define
-// their own bazel handler if they support deferring to Bazel.
-type bazelHandler interface {
-	// Issue query to Bazel to retrieve information about Bazel's view of the current module.
-	// If Bazel returns this information, set module properties on the current module to reflect
-	// the returned information.
-	// Returns true if information was available from Bazel, false if bazel invocation still needs to occur.
-	generateBazelBuildActions(ctx android.ModuleContext, label string) bool
-}
-
 type xref interface {
 	XrefCcFiles() android.Paths
 }
@@ -796,7 +785,7 @@
 	compiler     compiler
 	linker       linker
 	installer    installer
-	bazelHandler bazelHandler
+	bazelHandler android.BazelHandler
 
 	features []feature
 	stl      *stl
@@ -1696,7 +1685,7 @@
 	bazelModuleLabel := c.GetBazelLabel(actx, c)
 	bazelActionsUsed := false
 	if c.MixedBuildsEnabled(actx) && c.bazelHandler != nil {
-		bazelActionsUsed = c.bazelHandler.generateBazelBuildActions(actx, bazelModuleLabel)
+		bazelActionsUsed = c.bazelHandler.GenerateBazelBuildActions(actx, bazelModuleLabel)
 	}
 	return bazelActionsUsed
 }
diff --git a/cc/library.go b/cc/library.go
index 51cba20..b2360e9 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -556,7 +556,7 @@
 }
 
 type ccLibraryBazelHandler struct {
-	bazelHandler
+	android.BazelHandler
 
 	module *Module
 }
@@ -642,7 +642,7 @@
 	return android.OptionalPathForPath(android.PathForBazelOut(ctx, tocFile))
 }
 
-func (handler *ccLibraryBazelHandler) generateBazelBuildActions(ctx android.ModuleContext, label string) bool {
+func (handler *ccLibraryBazelHandler) GenerateBazelBuildActions(ctx android.ModuleContext, label string) bool {
 	bazelCtx := ctx.Config().BazelContext
 	ccInfo, ok, err := bazelCtx.GetCcInfo(label, ctx.Arch().ArchType)
 	if err != nil {
diff --git a/cc/library_headers.go b/cc/library_headers.go
index e596ff7..1a276f4 100644
--- a/cc/library_headers.go
+++ b/cc/library_headers.go
@@ -44,13 +44,13 @@
 }
 
 type libraryHeaderBazelHander struct {
-	bazelHandler
+	android.BazelHandler
 
 	module  *Module
 	library *libraryDecorator
 }
 
-func (h *libraryHeaderBazelHander) generateBazelBuildActions(ctx android.ModuleContext, label string) bool {
+func (h *libraryHeaderBazelHander) GenerateBazelBuildActions(ctx android.ModuleContext, label string) bool {
 	bazelCtx := ctx.Config().BazelContext
 	ccInfo, ok, err := bazelCtx.GetCcInfo(label, ctx.Arch().ArchType)
 	if err != nil {
diff --git a/cc/object.go b/cc/object.go
index bd9f228..5952f1e 100644
--- a/cc/object.go
+++ b/cc/object.go
@@ -47,12 +47,12 @@
 }
 
 type objectBazelHandler struct {
-	bazelHandler
+	android.BazelHandler
 
 	module *Module
 }
 
-func (handler *objectBazelHandler) generateBazelBuildActions(ctx android.ModuleContext, label string) bool {
+func (handler *objectBazelHandler) GenerateBazelBuildActions(ctx android.ModuleContext, label string) bool {
 	bazelCtx := ctx.Config().BazelContext
 	objPaths, ok := bazelCtx.GetOutputFiles(label, ctx.Arch().ArchType)
 	if ok {
diff --git a/cc/prebuilt.go b/cc/prebuilt.go
index f7154ec..d324241 100644
--- a/cc/prebuilt.go
+++ b/cc/prebuilt.go
@@ -15,9 +15,10 @@
 package cc
 
 import (
-	"android/soong/android"
 	"path/filepath"
 	"strings"
+
+	"android/soong/android"
 )
 
 func init() {
@@ -321,13 +322,13 @@
 }
 
 type prebuiltStaticLibraryBazelHandler struct {
-	bazelHandler
+	android.BazelHandler
 
 	module  *Module
 	library *libraryDecorator
 }
 
-func (h *prebuiltStaticLibraryBazelHandler) generateBazelBuildActions(ctx android.ModuleContext, label string) bool {
+func (h *prebuiltStaticLibraryBazelHandler) GenerateBazelBuildActions(ctx android.ModuleContext, label string) bool {
 	bazelCtx := ctx.Config().BazelContext
 	ccInfo, ok, err := bazelCtx.GetCcInfo(label, ctx.Arch().ArchType)
 	if err != nil {