Convert analysis server over to use ContextBuilder

pkg/analyzer/lib/file_system/file_system.dart

Index: pkg/analyzer/lib/file_system/file_system.dart
diff --git a/pkg/analyzer/lib/file_system/file_system.dart b/pkg/analyzer/lib/file_system/file_system.dart
index 8fb602568a7166b7fa57ccfb7d08a97963e6641a..f005eefd8c90a9d2b367c3b0e63ebb0769da0d32 100644
--- a/pkg/analyzer/lib/file_system/file_system.dart
+++ b/pkg/analyzer/lib/file_system/file_system.dart
@@ -54,12 +54,6 @@ abstract class File implements Resource {
   File renameSync(String newPath);
 
   /**
-   * Return a file that refers to the same file as this file, but whose path
-   * does not contain any symbolic links.
-   */
-  File resolveSymbolicLinksSync();
-
-  /**
    * Synchronously write the given [bytes] to the file. The new content will
    * replace any existing content.
    *
@@ -183,6 +177,12 @@ abstract class Resource {
   bool isOrContains(String path);
 
   /**
+   * Return a resource that refers to the same resource as this resource, but
+   * whose path does not contain any symbolic links.
+   */
+  Resource resolveSymbolicLinksSync();
+
+  /**
    * Return a Uri representing this resource.
    */
   Uri toUri();