Add GenerateAndroidBuildActions to DefaultsModuleBase

Add an empty GenerateAndroidBuildActiosn to DefaultsModuleBase
so that every defaults module doesn't need to provide one.  This
will also allow adding an implementation in the next patch.

Test: m checkbuild
Change-Id: I13554bdb3a287c2f18e1efab74d4f08a1ba8620c

android/defaults.go

@@ -80,6 +80,9 @@ func (d *DefaultsModuleBase) properties() []interface{} {
 	return d.defaultableProperties
 }
 
+func (d *DefaultsModuleBase) GenerateAndroidBuildActions(ctx ModuleContext) {
+}
+
 func InitDefaultsModule(module DefaultableModule) {
 	module.AddProperties(
 		&hostAndDeviceProperties{},

android/visibility_test.go

@@ -759,6 +759,3 @@ func defaultsFactory() Module {
 	InitDefaultsModule(m)
 	return m
 }
-
-func (*mockDefaults) GenerateAndroidBuildActions(ctx ModuleContext) {
-}

apex/apex.go

@@ -1295,9 +1295,6 @@ type Defaults struct {
 	android.DefaultsModuleBase
 }
 
-func (*Defaults) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-}
-
 func defaultsFactory() android.Module {
 	return DefaultsFactory()
 }

cc/cc.go

@@ -2036,9 +2036,6 @@ type Defaults struct {
 	android.ApexModuleBase
 }
 
-func (*Defaults) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-}
-
 // cc_defaults provides a set of properties that can be inherited by other cc
 // modules. A module can use the properties from a cc_defaults using
 // `defaults: ["<:default_module_name>"]`. Properties of both modules are

genrule/genrule.go

@@ -582,9 +582,6 @@ type Defaults struct {
 	android.DefaultsModuleBase
 }
 
-func (*Defaults) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-}
-
 func defaultsFactory() android.Module {
 	return DefaultsFactory()
 }

java/droiddoc.go

@@ -1808,9 +1808,6 @@ type DocDefaults struct {
 	android.DefaultsModuleBase
 }
 
-func (*DocDefaults) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-}
-
 func DocDefaultsFactory() android.Module {
 	module := &DocDefaults{}
 

java/java.go

@@ -2131,9 +2131,6 @@ type Defaults struct {
 	android.DefaultsModuleBase
 }
 
-func (*Defaults) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-}
-
 // java_defaults provides a set of properties that can be inherited by other java or android modules.
 //
 // A module can use the properties from a java_defaults module using `defaults: ["defaults_module_name"]`.  Each