Fix warnings in dart2js code and re-enable analyzer coverage.

sdk/lib/_internal/compiler/implementation/ssa/bailout.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of ssa;
 
 class BailoutInfo {
   int instructionId;
   int bailoutId;
   BailoutInfo(this.instructionId, this.bailoutId);
@@ skipping 484 matching lines @@
     if (body is HLabeledBlockInformation) {
       currentBlockInformation = body;
       HLabeledBlockInformation info = body;
       visitStatements(info.body, newFlow: true);
     } else if (body is HLoopBlockInformation) {
       currentBlockInformation = body;
       HLoopBlockInformation info = body;
       if (info.initializer != null) {
         visitExpression(info.initializer);
       }
-      blocks.addLast(info.loopHeader);
+      blocks.add(info.loopHeader);
       if (!info.isDoWhile()) {
         visitExpression(info.condition);
       }
       visitStatements(info.body, newFlow: false);
       if (info.isDoWhile()) {
         visitExpression(info.condition);
       }
       if (info.updates != null) {
         visitExpression(info.updates);
       }
@@ skipping 29 matching lines @@
   void visitExpression(HSubExpressionBlockInformation info) {
     visitSubGraph(info.subExpression);
   }
 
   /**
    * Visit the statements in [info]. If [newFlow] is true, we add the
    * first block of [statements] to the list of [blocks].
    */
   void visitStatements(HSubGraphBlockInformation info, {bool newFlow}) {
     SubGraph graph = info.subGraph;
-    if (newFlow) blocks.addLast(graph.start);
+    if (newFlow) blocks.add(graph.start);
     visitSubGraph(graph);
     if (newFlow) blocks.removeLast();
   }
 
   void visitSubGraph(SubGraph graph) {
     SubGraph oldSubGraph = subGraph;
     subGraph = graph;
     visitBasicBlock(graph.start);
     subGraph = oldSubGraph;
   }
@@ skipping 59 matching lines @@
         hasComplexBailoutTargets = true;
       }
     } else {
       hasComplexBailoutTargets = true;
       blocks.forEach((HBasicBlock block) {
         block.bailoutTargets.add(target);
       });
     }
   }
 }