Fix JAVA_HOME on osx for gradle invocations

Bug: 230005411
Change-Id: I80564694295b608bae9ae4ecc7d9b0ce4a5d3648
diff --git a/tools/gradle.py b/tools/gradle.py
index 19fa773..92503a7 100755
--- a/tools/gradle.py
+++ b/tools/gradle.py
@@ -59,10 +59,10 @@
     GRADLE, GRADLE_TGZ, GRADLE_SHA1, 'Gradle binary')
 
 def EnsureJdk():
-  jdkHome = jdk.GetJdkHome()
-  jdkTgz = jdkHome + '.tar.gz'
+  jdkRoot = jdk.GetJdkRoot()
+  jdkTgz = jdkRoot + '.tar.gz'
   jdkSha1 = jdkTgz + '.sha1'
-  utils.EnsureDepFromGoogleCloudStorage(jdkHome, jdkTgz, jdkSha1, 'JDK')
+  utils.EnsureDepFromGoogleCloudStorage(jdkRoot, jdkTgz, jdkSha1, 'JDK')
 
 def EnsureDeps():
   EnsureGradle()