Bazel: Add fixes for --incompatible_disallow_legacy_java_provider

In some places the old style, string-indexed Starlark ‘java’ provider
was already replaced with new style javaInfo in: I1d5afb8b022. But some
other places were missed to be replaced.

Change-Id: Ie5ee9eed689793f532f99aeaa38f12ec87a709e1

tools/bzl/classpath.bzl

diff --git a/tools/bzl/classpath.bzl b/tools/bzl/classpath.bzl
index 55479c5..682ee3c 100644
--- a/tools/bzl/classpath.bzl
+++ b/tools/bzl/classpath.bzl
@@ -1,9 +1,9 @@
 def _classpath_collector(ctx):
     all = []
     for d in ctx.attr.deps:
-        if hasattr(d, "java"):
-            all.append(d.java.transitive_runtime_deps)
-            all.append(d.java.compilation_info.runtime_classpath)
+        if JavaInfo in d:
+            all.append(d[JavaInfo].transitive_runtime_deps)
+            all.append(d[JavaInfo].compilation_info.runtime_classpath)
         elif hasattr(d, "files"):
             all.append(d.files)