Stoppp using trippple consonants

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

Index: pkg/compiler/lib/src/js_backend/runtime_types.dart
diff --git a/pkg/compiler/lib/src/js_backend/runtime_types.dart b/pkg/compiler/lib/src/js_backend/runtime_types.dart
index 5a8f41c2044b028de51d406e75ec6966b97becea..ea22b215f34a14e05cc132a7ab8e72d154e63edf 100644
--- a/pkg/compiler/lib/src/js_backend/runtime_types.dart
+++ b/pkg/compiler/lib/src/js_backend/runtime_types.dart
@@ -530,7 +530,7 @@ class _RuntimeTypes extends _RuntimeTypesBase
     FunctionArgumentCollector functionArgumentCollector =
         new FunctionArgumentCollector();
 
-    // We need to add classes occuring in function type arguments, like for
+    // We need to add classes occurring in function type arguments, like for
     // instance 'I' for [: o is C<f> :] where f is [: typedef I f(); :].
     void collectFunctionTypeArguments(Iterable<ResolutionDartType> types) {
       for (ResolutionDartType type in types) {
@@ -576,7 +576,7 @@ class _RuntimeTypes extends _RuntimeTypesBase
     FunctionArgumentCollector functionArgumentCollector =
         new FunctionArgumentCollector();
 
-    // We need to add types occuring in function type arguments, like for
+    // We need to add types occurring in function type arguments, like for
     // instance 'J' for [: (J j) {} is f :] where f is
     // [: typedef void f(I i); :] and 'J' is a subtype of 'I'.
     void collectFunctionTypeArguments(Iterable<ResolutionDartType> types) {