Fix compiler formatter errors.

pkg/compiler/lib/src/js_backend/backend.dart

Index: pkg/compiler/lib/src/js_backend/backend.dart
diff --git a/pkg/compiler/lib/src/js_backend/backend.dart b/pkg/compiler/lib/src/js_backend/backend.dart
index 7a6b935605d5a293a9c130b67bc5e69568fd1012..e943cf8838e085610476fdf99ca29b4db1a15760 100644
--- a/pkg/compiler/lib/src/js_backend/backend.dart
+++ b/pkg/compiler/lib/src/js_backend/backend.dart
@@ -574,14 +574,16 @@ class JavaScriptBackend {
 
   /// Resolution analysis for tracking reflective access to type variables.
   TypeVariableResolutionAnalysis get typeVariableResolutionAnalysis {
-    assert(invariant(NO_LOCATION_SPANNABLE, _typeVariableCodegenAnalysis == null,
+    assert(invariant(
+        NO_LOCATION_SPANNABLE, _typeVariableCodegenAnalysis == null,
         message: "TypeVariableHandler has already been created."));
     return _typeVariableResolutionAnalysis;
   }
 
   /// Codegen handler for reflective access to type variables.
   TypeVariableCodegenAnalysis get typeVariableCodegenAnalysis {
-    assert(invariant(NO_LOCATION_SPANNABLE, _typeVariableCodegenAnalysis != null,
+    assert(invariant(
+        NO_LOCATION_SPANNABLE, _typeVariableCodegenAnalysis != null,
         message: "TypeVariableHandler has not been created yet."));
     return _typeVariableCodegenAnalysis;
   }
@@ -906,7 +908,8 @@ class JavaScriptBackend {
   /// Creates an [Enqueuer] for code generation specific to this backend.
   CodegenEnqueuer createCodegenEnqueuer(
       CompilerTask task, Compiler compiler, ClosedWorld closedWorld) {
-    _typeVariableCodegenAnalysis = new TypeVariableCodegenAnalysis(this, helpers, mirrorsData);
+    _typeVariableCodegenAnalysis =
+        new TypeVariableCodegenAnalysis(this, helpers, mirrorsData);
     _lookupMapAnalysis = new LookupMapAnalysis(
         reporter,
         constantSystem,