Allow the user to explicitly set the java Uncompress_dex property.

ART tests need to explicitly control the compression.

Bug: 157239179
Test: "atest ArtGtestsTarget" with http://go/aog/1302773
Change-Id: I4490aa0a61fa71f830feb6a46dffd8d20fccfc66

java/dex.go

@@ -18,6 +18,7 @@ import (
 	"strings"
 
 	"github.com/google/blueprint"
+	"github.com/google/blueprint/proptools"
 
 	"android/soong/android"
 )
@@ -177,7 +178,7 @@ func (j *Module) compileDex(ctx android.ModuleContext, flags javaBuilderFlags,
 	outDir := android.PathForModuleOut(ctx, "dex")
 
 	zipFlags := "--ignore_missing_files"
-	if j.deviceProperties.UncompressDex {
+	if proptools.Bool(j.deviceProperties.Uncompress_dex) {
 		zipFlags += " -L 0"
 	}
 
@@ -214,7 +215,7 @@ func (j *Module) compileDex(ctx android.ModuleContext, flags javaBuilderFlags,
 			},
 		})
 	}
-	if j.deviceProperties.UncompressDex {
+	if proptools.Bool(j.deviceProperties.Uncompress_dex) {
 		alignedJavalibJar := android.PathForModuleOut(ctx, "aligned", jarName)
 		TransformZipAlign(ctx, alignedJavalibJar, javalibJar)
 		javalibJar = alignedJavalibJar