Move gtest tool dependencies from makefile to soong

Bug: 147817558
Bug: 147819342
Test: run test individually and remove the tools directory between runs
Change-Id: Ida773d76fdeadb38695d6a2556ad4a55adb823b5
diff --git a/dexlayout/Android.bp b/dexlayout/Android.bp
index 44af58d..82fbf2b 100644
--- a/dexlayout/Android.bp
+++ b/dexlayout/Android.bp
@@ -236,6 +236,10 @@
         "libartd-dexlayout",
     ],
     srcs: ["dexlayout_test.cc"],
+    required: [
+        "dexlayoutd",
+        "dexdump",
+    ],
 }
 
 art_cc_binary {
@@ -271,4 +275,5 @@
         "art_gtest_defaults",
     ],
     srcs: ["dexdiag_test.cc"],
+    required: ["dexdiag"],
 }