Add filegroup modules to module_bp_java_deps.json

This adds all filegroup modules to java_deps.json, since java modules
can have filegroups in their srcs via :<filegroup>

One possible optimization here could be to filter out filegroups that do
not contain .java files when creating module_bp_java_deps.json. This CL
does not do that since the increase in .json file is not significant. In
aosp/main, it increases from ~40MB to ~50MB.

Test: verified that `mime.types.minimized` exists in
module_bp_java_deps.json

Bug: 373837953
Change-Id: I8a89d8b454a12c251ff2262b0e507cf322ce0a5f
diff --git a/android/filegroup.go b/android/filegroup.go
index ff0f74e..a8b4f00 100644
--- a/android/filegroup.go
+++ b/android/filegroup.go
@@ -139,3 +139,15 @@
 
 	return module
 }
+
+// Collect information for opening IDE project files in java/jdeps.go.
+// Copied from build/soong/genrule/genrule.go
+func (fg *fileGroup) IDEInfo(ctx BaseModuleContext, dpInfo *IdeInfo) {
+	dpInfo.Srcs = append(dpInfo.Srcs, fg.Srcs().Strings()...)
+	for _, src := range fg.properties.Srcs.GetOrDefault(ctx, nil) {
+		if mod, _ := SrcIsModuleWithTag(src); mod != "" {
+			// Register the module name without any tags in `Deps`
+			dpInfo.Deps = append(dpInfo.Deps, mod)
+		}
+	}
+}