Add flag to AnalysisOptions to be able to disable deferred loading.

editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/context/AnalysisOptionsImpl.java

Index: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/context/AnalysisOptionsImpl.java
diff --git a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/context/AnalysisOptionsImpl.java b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/context/AnalysisOptionsImpl.java
index 3dd3f7d116e3be629aa2da4126d98a9bcdd3f63e..573fdefb4811be44a3ce9d3aad8154c229c17ace 100644
--- a/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/context/AnalysisOptionsImpl.java
+++ b/editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/context/AnalysisOptionsImpl.java
@@ -27,6 +27,11 @@ public class AnalysisOptionsImpl implements AnalysisOptions {
   public static final int DEFAULT_CACHE_SIZE = 64;
 
   /**
+   * The default value for enabling deferred loading.
+   */
+  public static boolean DEFAULT_ENABLE_DEFERRED_LOADING = false;
+
+  /**
    * The maximum number of sources for which AST structures should be kept in the cache.
    */
   private int cacheSize = DEFAULT_CACHE_SIZE;
@@ -74,6 +79,11 @@ public class AnalysisOptionsImpl implements AnalysisOptions {
   private boolean analyzePolymer = true;
 
   /**
+   * A flag indicating whether analysis is to enable deferred loading.
+   */
+  private boolean enableDeferredLoading = DEFAULT_ENABLE_DEFERRED_LOADING;
+
+  /**
    * Initialize a newly created set of analysis options to have their default values.
    */
   public AnalysisOptionsImpl() {
@@ -118,6 +128,11 @@ public class AnalysisOptionsImpl implements AnalysisOptions {
   }
 
   @Override
+  public boolean getEnableDeferredLoading() {
+    return enableDeferredLoading;
+  }
+
+  @Override
   public boolean getGenerateSdkErrors() {
     return generateSdkErrors;
   }
@@ -185,6 +200,15 @@ public class AnalysisOptionsImpl implements AnalysisOptions {
   }
 
   /**
+   * Set whether deferred loading should be enabled.
+   * 
+   * @param enableDeferredLoading {@code true} if deferred loading should be enabled
+   */
+  public void setEnableDeferredLoading(boolean enableDeferredLoading) {
+    this.enableDeferredLoading = enableDeferredLoading;
+  }
+
+  /**
    * Set whether errors, warnings and hints should be generated for sources in the SDK to match the
    * given value.
    *