Revert "Restrict java_sdk_library in libs of java_import and dro..."

Revert submission 3271699

Reason for revert: DroidMonitor: Potential culprit for http://b/368606825 - verifying through ABTD before submission. 

Reverted changes: /q/submissionid:3271699

Change-Id: I65f0e10eb775fd08dd958b699ce1191da7ce0669
diff --git a/java/droiddoc.go b/java/droiddoc.go
index a7e92d9..2929bb8 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -373,11 +373,8 @@
 				panic(fmt.Errorf("unknown dependency %q for %q", otherName, ctx.ModuleName()))
 			}
 		case libTag, sdkLibTag:
-			if _, ok := module.(SdkLibraryDependency); ok {
-				sdkInfo, _ := android.OtherModuleProvider(ctx, module, SdkLibraryInfoProvider)
-				generatingLibsString := android.PrettyConcat(
-					getGeneratingLibs(ctx, j.SdkVersion(ctx), module.Name(), sdkInfo), true, "or")
-				ctx.ModuleErrorf("cannot depend directly on java_sdk_library %q; try depending on %s instead", module.Name(), generatingLibsString)
+			if dep, ok := module.(SdkLibraryDependency); ok {
+				deps.classpath = append(deps.classpath, dep.SdkHeaderJars(ctx, j.SdkVersion(ctx))...)
 			} else if dep, ok := android.OtherModuleProvider(ctx, module, JavaInfoProvider); ok {
 				deps.classpath = append(deps.classpath, dep.HeaderJars...)
 				deps.aidlIncludeDirs = append(deps.aidlIncludeDirs, dep.AidlIncludeDirs...)
diff --git a/java/java.go b/java/java.go
index b6d6173..d63bbe6 100644
--- a/java/java.go
+++ b/java/java.go
@@ -2700,13 +2700,13 @@
 					transitiveBootClasspathHeaderJars = append(transitiveBootClasspathHeaderJars, dep.TransitiveStaticLibsHeaderJars)
 				}
 			}
-		} else if _, ok := module.(SdkLibraryDependency); ok {
+		} else if dep, ok := module.(SdkLibraryDependency); ok {
 			switch tag {
 			case libTag, sdkLibTag:
-				sdkInfo, _ := android.OtherModuleProvider(ctx, module, SdkLibraryInfoProvider)
-				generatingLibsString := android.PrettyConcat(
-					getGeneratingLibs(ctx, j.SdkVersion(ctx), module.Name(), sdkInfo), true, "or")
-				ctx.ModuleErrorf("cannot depend directly on java_sdk_library %q; try depending on %s instead", module.Name(), generatingLibsString)
+				depHeaderJars := dep.SdkHeaderJars(ctx, j.SdkVersion(ctx))
+				flags.classpath = append(flags.classpath, depHeaderJars...)
+				transitiveClasspathHeaderJars = append(transitiveClasspathHeaderJars,
+					android.NewDepSet(android.PREORDER, depHeaderJars, nil))
 			}
 		}