Revert^2 "Rename DexJar interface method to DexJarBuildPath."

This reverts commit b0dc851ff4eca650042b52ce4ff06cb7e0312b77.

Reason for revert: relanding original change. Build failures were
  caused by a race with another CL: https://r.android.com/1320920

Test: lunch aosp_cf_x86_phone-userdebug && m
Change-Id: Ic9016582dae7773b4d4f84a63425f1ef7a5d061f
diff --git a/java/java.go b/java/java.go
index eaf0fe9..368dcc6 100644
--- a/java/java.go
+++ b/java/java.go
@@ -501,7 +501,7 @@
 	ImplementationJars() android.Paths
 	ResourceJars() android.Paths
 	ImplementationAndResourcesJars() android.Paths
-	DexJar() android.Path
+	DexJarBuildPath() android.Path
 	AidlIncludeDirs() android.Paths
 	ExportedSdkLibs() []string
 	ExportedPlugins() (android.Paths, []string)
@@ -1739,7 +1739,7 @@
 	return android.Paths{j.implementationJarFile}
 }
 
-func (j *Module) DexJar() android.Path {
+func (j *Module) DexJarBuildPath() android.Path {
 	return j.dexJarFile
 }
 
@@ -2565,7 +2565,7 @@
 	return android.Paths{j.combinedClasspathFile}
 }
 
-func (j *Import) DexJar() android.Path {
+func (j *Import) DexJarBuildPath() android.Path {
 	return nil
 }
 
@@ -2752,7 +2752,7 @@
 		j.Stem()+".jar", dexOutputFile)
 }
 
-func (j *DexImport) DexJar() android.Path {
+func (j *DexImport) DexJarBuildPath() android.Path {
 	return j.dexJarFile
 }