Issue 249. Show documentation for highlighted code completion.

editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/completion/CompletionEngine.java

Index: editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/completion/CompletionEngine.java
diff --git a/editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/completion/CompletionEngine.java b/editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/completion/CompletionEngine.java
index 08f92f6449ca7b16a96d0b64ef83bc4e721d193f..dfb10a79c6398e2fd89141fd91e929dfa0dd8cc6 100644
--- a/editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/completion/CompletionEngine.java
+++ b/editor/tools/plugins/com.google.dart.engine.services/src/com/google/dart/engine/services/completion/CompletionEngine.java
@@ -2312,6 +2312,7 @@ public class CompletionEngine {
 
     setParameterInfo(element, prop);
     prop.setCompletion(name).setReturnType(element.getType().getReturnType().getName());
+    prop.setElement(element);
 
     // If there is already argument list, then update only method name.
     if (identifier.getParent() instanceof MethodInvocation
@@ -2334,6 +2335,7 @@ public class CompletionEngine {
       return; // Simple constructors are not handled here
     }
     CompletionProposal prop = createProposal(element);
+    prop.setElement(element);
     if (element.getType() != null) {
       prop.setReturnType(element.getType().getName());
     }
@@ -2354,6 +2356,7 @@ public class CompletionEngine {
       return;
     }
     CompletionProposal prop = createProposal(element);
+    prop.setElement(element);
     Element container = element.getEnclosingElement();
     prop.setDeclaringType(container.getDisplayName());
     requestor.accept(prop);