Set up a stub pipline for using the new cps-based ir to generate js.

pkg/compiler/lib/src/ssa/value_range_analyzer.dart

Index: pkg/compiler/lib/src/ssa/value_range_analyzer.dart
diff --git a/pkg/compiler/lib/src/ssa/value_range_analyzer.dart b/pkg/compiler/lib/src/ssa/value_range_analyzer.dart
index 3b7f3dc312c674a86e8e61218a977153f8980484..c89a8ce7a94cb9abe3fe5176d11fdcaa3692edac 100644
--- a/pkg/compiler/lib/src/ssa/value_range_analyzer.dart
+++ b/pkg/compiler/lib/src/ssa/value_range_analyzer.dart
@@ -595,11 +595,15 @@ class SsaValueRangeAnalyzer extends HBaseVisitor implements OptimizationPhase {
   final Compiler compiler;
   final ConstantSystem constantSystem;
   final ValueRangeInfo info;
+  final SsaOptimizerTask optimizer;
 
   CodegenWorkItem work;
   HGraph graph;
 
-  SsaValueRangeAnalyzer(this.compiler, constantSystem, this.work)
+  SsaValueRangeAnalyzer(this.compiler,
+                        constantSystem,
+                        this.optimizer,
+                        this.work)
       : info = new ValueRangeInfo(constantSystem),
         this.constantSystem = constantSystem;
 
@@ -610,14 +614,13 @@ class SsaValueRangeAnalyzer extends HBaseVisitor implements OptimizationPhase {
     // that the graph does not get polluted with these instructions
     // only necessary for this phase.
     removeRangeConversion();
-    JavaScriptBackend backend = compiler.backend;
     // TODO(herhut): Find a cleaner way to pass around ranges.
-    backend.optimizer.ranges = ranges;
+    optimizer.ranges = ranges;
   }
 
   void removeRangeConversion() {
     conversions.forEach((HRangeConversion instruction) {
-      instruction.block.rewrite(instruction, instruction.inputs[0]);;
+      instruction.block.rewrite(instruction, instruction.inputs[0]);
       instruction.block.remove(instruction);
     });
   }