Renamed MessageRef to MessageLink.

diff --git a/com.google.eclipse.protobuf.test/src/com/google/eclipse/protobuf/model/util/ModelFinder_localExtensionsFrom_Test.java b/com.google.eclipse.protobuf.test/src/com/google/eclipse/protobuf/model/util/ModelFinder_localExtensionsFrom_Test.java
index 11ad3b2..a3a5dee 100644
--- a/com.google.eclipse.protobuf.test/src/com/google/eclipse/protobuf/model/util/ModelFinder_localExtensionsFrom_Test.java
+++ b/com.google.eclipse.protobuf.test/src/com/google/eclipse/protobuf/model/util/ModelFinder_localExtensionsFrom_Test.java

@@ -44,7 +44,7 @@
   @Test public void should_return_extensions_of_message() {
     Message m = xtext.find("Person", " {", Message.class);
     List<MessageExtension> extensions = new ArrayList<MessageExtension>(finder.localExtensionsOf(m));
-    Message referred = extensions.get(0).getMessage().getType();
+    Message referred = extensions.get(0).getMessage().getTarget();
     assertSame(m, referred);
   }
 }

diff --git a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/contentassist/ProtobufProposalProvider.java b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/contentassist/ProtobufProposalProvider.java
index 71ec497..7f970ce 100644
--- a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/contentassist/ProtobufProposalProvider.java
+++ b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/contentassist/ProtobufProposalProvider.java

@@ -39,7 +39,7 @@
 import com.google.eclipse.protobuf.scoping.*;
 import com.google.eclipse.protobuf.ui.grammar.CompoundElement;
 import com.google.eclipse.protobuf.ui.labeling.Images;
-import com.google.eclipse.protobuf.ui.util.*;
+import com.google.eclipse.protobuf.ui.util.Literals;
 import com.google.inject.Inject;
 
 /**
@@ -83,7 +83,7 @@
     }
   }
 
-  @Override public void completeMessageRef_Type(EObject model, Assignment assignment, ContentAssistContext context, 
+  @Override public void completeMessageLink_Target(EObject model, Assignment assignment, ContentAssistContext context, 
       ICompletionProposalAcceptor acceptor) {
     Collection<IEObjectDescription> scope = scoping().findTypeScope(model);
     for (IEObjectDescription d : descriptionChooser.shortestQualifiedNamesIn(scope)) {

diff --git a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/editor/syntaxcoloring/ProtobufSemanticHighlightingCalculator.java b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/editor/syntaxcoloring/ProtobufSemanticHighlightingCalculator.java
index 55daf4d..12bf7aa 100644
--- a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/editor/syntaxcoloring/ProtobufSemanticHighlightingCalculator.java
+++ b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/editor/syntaxcoloring/ProtobufSemanticHighlightingCalculator.java

@@ -11,7 +11,6 @@
 
 import static com.google.eclipse.protobuf.protobuf.ProtobufPackage.Literals.*;
 import static com.google.eclipse.protobuf.ui.editor.syntaxcoloring.HighlightingConfiguration.*;
-import static org.eclipse.xtext.ui.editor.syntaxcoloring.DefaultHighlightingConfiguration.*;
 
 import org.eclipse.emf.common.util.EList;
 import org.eclipse.emf.ecore.*;

diff --git a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/labeling/Labels.java b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/labeling/Labels.java
index 69e1631..c829532 100644
--- a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/labeling/Labels.java
+++ b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/labeling/Labels.java

@@ -149,7 +149,7 @@
     return text;
   }
 
-  private String messageName(MessageRef r) {
-    return r.getType().getName();
+  private String messageName(MessageLink r) {
+    return r.getTarget().getName();
   }
 }

diff --git a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/outline/ProtobufOutlineTreeProvider.java b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/outline/ProtobufOutlineTreeProvider.java
index 5dd7d5d..c157012 100644
--- a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/outline/ProtobufOutlineTreeProvider.java
+++ b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/outline/ProtobufOutlineTreeProvider.java

@@ -30,7 +30,7 @@
   static {
     IGNORED_ELEMENT_TYPES.add(BooleanRef.class);
     IGNORED_ELEMENT_TYPES.add(FieldOption.class);
-    IGNORED_ELEMENT_TYPES.add(MessageRef.class);
+    IGNORED_ELEMENT_TYPES.add(MessageLink.class);
   }
 
   boolean _isLeaf(Extensions e) {

diff --git a/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/Protobuf.xtext b/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/Protobuf.xtext
index 5344ad1..12aafb1 100644
--- a/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/Protobuf.xtext
+++ b/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/Protobuf.xtext

@@ -177,7 +177,7 @@
   '0'..'9';
 
 MessageExtension:
-  'extend' message=MessageRef '{'
+  'extend' message=MessageLink '{'
   elements+=MessageElement*
   '}' (';')?;
 
@@ -190,7 +190,7 @@
   Option | Rpc;
 
 Rpc:
-  'rpc' name=Name '(' argType=MessageRef ')' 'returns' '(' returnType=MessageRef ')'
+  'rpc' name=Name '(' argType=MessageLink ')' 'returns' '(' returnType=MessageLink ')'
   (('{' options+=Option* '}') (';')? | ';');
 
 Name:
@@ -199,8 +199,8 @@
   'double' | 'float' | 'int32' | 'int64' | 'uint32' | 'uint64' | 'sint32' | 'sint64' | 'fixed32' | 'fixed64' |
   'sfixed32' | 'sfixed64' | 'bool' | 'string' | 'bytes';
 
-MessageRef:
-  type=[Message|QualifiedName];
+MessageLink:
+  target=[Message|QualifiedName];
 
 Option:
   NativeOption | CustomOption;

diff --git a/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/model/util/ModelFinder.java b/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/model/util/ModelFinder.java
index 2c45cc3..5339092 100644
--- a/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/model/util/ModelFinder.java
+++ b/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/model/util/ModelFinder.java

@@ -56,8 +56,8 @@
    * @return the message from the given extension, or {@code null} if the extension is not referring to a message.
    */
   public Message messageFrom(MessageExtension e) {
-    MessageRef ref = e.getMessage();
-    return ref == null ? null : ref.getType();
+    MessageLink ref = e.getMessage();
+    return ref == null ? null : ref.getTarget();
   }
 
   /**

diff --git a/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/scoping/ProtobufScopeProvider.java b/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/scoping/ProtobufScopeProvider.java
index 2a6310c..57cfbe4 100644
--- a/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/scoping/ProtobufScopeProvider.java
+++ b/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/scoping/ProtobufScopeProvider.java

@@ -11,17 +11,17 @@
 import static com.google.eclipse.protobuf.scoping.OptionType.typeOf;
 import static java.util.Collections.emptySet;
 
-import com.google.eclipse.protobuf.model.util.*;
-import com.google.eclipse.protobuf.protobuf.*;
-import com.google.eclipse.protobuf.protobuf.Enum;
-import com.google.inject.Inject;
+import java.util.*;
 
 import org.eclipse.emf.ecore.*;
 import org.eclipse.xtext.resource.IEObjectDescription;
 import org.eclipse.xtext.scoping.IScope;
 import org.eclipse.xtext.scoping.impl.*;
 
-import java.util.*;
+import com.google.eclipse.protobuf.model.util.*;
+import com.google.eclipse.protobuf.protobuf.*;
+import com.google.eclipse.protobuf.protobuf.Enum;
+import com.google.inject.Inject;
 
 /**
  * Custom scoping description.
@@ -61,7 +61,7 @@
   }
 
   @SuppressWarnings("unused")
-  public IScope scope_MessageRef_type(MessageRef m, EReference r) {
+  public IScope scope_MessageLink_target(MessageLink m, EReference r) {
     return createScope(findMessageScope(m));
   }