dart2js: Fix hints in code base.

pkg/compiler/lib/src/source_file_provider.dart

Index: pkg/compiler/lib/src/source_file_provider.dart
diff --git a/pkg/compiler/lib/src/source_file_provider.dart b/pkg/compiler/lib/src/source_file_provider.dart
index 30a75591734d35524c7e8167cf900c23cb4b5f3a..6c02b3a6ca85c1add796e78e6e5bca89d886986b 100644
--- a/pkg/compiler/lib/src/source_file_provider.dart
+++ b/pkg/compiler/lib/src/source_file_provider.dart
@@ -173,11 +173,10 @@ class FormattingDiagnosticHandler {
 
     message = prefixMessage(message, kind);
 
-    // [previousKind]/[lastKind] records the previous non-INFO kind we saw.
+    // [lastKind] records the previous non-INFO kind we saw.
     // This is used to suppress info about a warning when warnings are
     // suppressed, and similar for hints.
-    var previousKind = lastKind;
-    if (kind != api.Diagnostic.INFO) {
+     if (kind != api.Diagnostic.INFO) {

[karlklose, 2015/06/11 10:56:16]

Indentation.

[herhut, 2015/06/11 12:48:55]

Will do in follow-up CL...

       lastKind = kind;
     }
     var color;
@@ -254,7 +253,6 @@ class RandomAccessFileOutputProvider {
 
   EventSink<String> call(String name, String extension) {
     Uri uri;
-    String sourceMapFileName;
     bool isPrimaryOutput = false;
     // TODO (johnniwinther, sigurdm): Make a better interface for
     // output-providers.
@@ -264,8 +262,6 @@ class RandomAccessFileOutputProvider {
       if (extension == 'js' || extension == 'dart') {
         isPrimaryOutput = true;
         uri = out;
-        sourceMapFileName =
-            sourceMapOut.path.substring(sourceMapOut.path.lastIndexOf('/') + 1);
       } else if (extension == 'precompiled.js') {
         uri = computePrecompiledUri(out);
         onInfo("File ($uri) is compatible with header"