Record information about a summary's dependencies in the summary itself.

pkg/analyzer/lib/src/summary/idl.dart

Index: pkg/analyzer/lib/src/summary/idl.dart
diff --git a/pkg/analyzer/lib/src/summary/idl.dart b/pkg/analyzer/lib/src/summary/idl.dart
index c45f83f281cfc6f156dc0667877845e713354ce1..70b329bfc2bab5905cb1977404d12caa606cac0e 100644
--- a/pkg/analyzer/lib/src/summary/idl.dart
+++ b/pkg/analyzer/lib/src/summary/idl.dart
@@ -658,6 +658,13 @@ abstract class PackageBundle extends base.SummaryClass {
   String get apiSignature;
 
   /**
+   * Information about the packages this package depends on, if known.
+   */
+  @Id(8)
+  @informative
+  List<PackageDependencyInfo> get dependencies;
+
+  /**
    * Linked libraries.
    */
   @Id(0)
@@ -706,6 +713,51 @@ abstract class PackageBundle extends base.SummaryClass {
 }
 
 /**
+ * Information about a single dependency of a summary package.
+ */
+abstract class PackageDependencyInfo extends base.SummaryClass {
+  /**
+   * API signature of this dependency.
+   */
+  @Id(0)
+  String get apiSignature;
+
+  /**
+   * If this dependency summarizes any files whose URI takes the form
+   * "package:<package_name>/...", a list of all such package names, sorted
+   * lexicographically.  Otherwise empty.
+   */
+  @Id(2)
+  List<String> get includedPackageNames;
+
+  /**
+   * Indicates whether this dependency summarizes any files whose URI takes the
+   * form "dart:...".
+   */
+  @Id(4)
+  bool get includesDartUris;
+
+  /**
+   * Indicates whether this dependency summarizes any files whose URI takes the
+   * form "file:...".
+   */
+  @Id(3)
+  bool get includesFileUris;
+
+  /**
+   * Relative path to the summary file for this dependency.  This is intended as
+   * a hint to help the analysis server locate summaries of dependencies.  We
+   * don't specify precisely what this path is relative to, but we expect it to
+   * be relative to a directory the analysis server can find (e.g. for projects
+   * built using Bazel, it would be relative to the "bazel-bin" directory).
+   *
+   * Absent if the path is not known.
+   */
+  @Id(1)
+  String get summaryPath;
+}
+
+/**
  * Index information about a package.
  */
 @TopLevel('Indx')