Initial Bazel file resolver support.

pkg/analysis_server/lib/src/server/driver.dart

Index: pkg/analysis_server/lib/src/server/driver.dart
diff --git a/pkg/analysis_server/lib/src/server/driver.dart b/pkg/analysis_server/lib/src/server/driver.dart
index ad9a5a9422a7d7c0d06bb42b272ed88bb0ee34c0..a70ecb733cc00c152907fc2bf84bb1bdb9f0317e 100644
--- a/pkg/analysis_server/lib/src/server/driver.dart
+++ b/pkg/analysis_server/lib/src/server/driver.dart
@@ -297,6 +297,12 @@ class Driver implements ServerStarter {
   InstrumentationServer instrumentationServer;
 
   /**
+   * The file resolver provider used to override the way file URI's are
+   * resolved in some contexts.
+   */
+  ResolverProvider fileResolverProvider;
+
+  /**
    * The package resolver provider used to override the way package URI's are
    * resolved in some contexts.
    */
@@ -439,6 +445,7 @@ class Driver implements ServerStarter {
         defaultSdk,
         service,
         serverPlugin,
+        fileResolverProvider,
         packageResolverProvider,
         useSingleContextManager);
     httpServer = new HttpAnalysisServer(socketServer);