diff --git a/pkg/compiler/lib/src/js_backend/backend.dart b/pkg/compiler/lib/src/js_backend/backend.dart
index f180c6c..cbd4d59 100644
--- a/pkg/compiler/lib/src/js_backend/backend.dart
+++ b/pkg/compiler/lib/src/js_backend/backend.dart
@@ -398,7 +398,6 @@
         new BackendUsageBuilderImpl(compiler.frontendStrategy);
     _checkedModeHelpers = new CheckedModeHelpers();
     emitter = new CodeEmitterTask(compiler, generateSourceMap);
-
     noSuchMethodRegistry = new NoSuchMethodRegistryImpl(
         commonElements, compiler.frontendStrategy.createNoSuchMethodResolver());
     functionCompiler = new SsaFunctionCompiler(
diff --git a/pkg/compiler/lib/src/ssa/graph_builder.dart b/pkg/compiler/lib/src/ssa/graph_builder.dart
index e42df10..7b78b8c 100644
--- a/pkg/compiler/lib/src/ssa/graph_builder.dart
+++ b/pkg/compiler/lib/src/ssa/graph_builder.dart
@@ -281,8 +281,6 @@
   /// concrete SSA builder reports an error.
   bool getFlagValue(String flagName) {
     switch (flagName) {
-      case 'IS_FULL_EMITTER':
-        return false;
       case 'MINIFIED':
         return options.enableMinification;
       case 'MUST_RETAIN_METADATA':
diff --git a/sdk/lib/_internal/js_runtime/lib/core_patch.dart b/sdk/lib/_internal/js_runtime/lib/core_patch.dart
index a5438a4..2d0f531 100644
--- a/sdk/lib/_internal/js_runtime/lib/core_patch.dart
+++ b/sdk/lib/_internal/js_runtime/lib/core_patch.dart
@@ -80,14 +80,6 @@
   @patch
   static apply(Function function, List positionalArguments,
       [Map<Symbol, dynamic> namedArguments]) {
-    // The lazy and startup emitter use a different implementation. To keep the
-    // method small and inlinable, just select the method.
-    return JS_GET_FLAG("IS_FULL_EMITTER")
-        ? _apply1(function, positionalArguments, namedArguments)
-        : _apply2(function, positionalArguments, namedArguments);
-  }
-
-  static _apply1(function, positionalArguments, namedArguments) {
     return Primitives.applyFunction(
         function,
         positionalArguments,
@@ -95,15 +87,6 @@
         // tree-shake _symbolMapToStringMap.
         namedArguments == null ? null : _symbolMapToStringMap(namedArguments));
   }
-
-  static _apply2(function, positionalArguments, namedArguments) {
-    return Primitives.applyFunction2(
-        function,
-        positionalArguments,
-        // Use this form so that if namedArguments is always null, we can
-        // tree-shake _symbolMapToStringMap.
-        namedArguments == null ? null : _symbolMapToStringMap(namedArguments));
-  }
 }
 
 // Patch for Expando implementation.
diff --git a/sdk/lib/_internal/js_runtime/lib/js_helper.dart b/sdk/lib/_internal/js_runtime/lib/js_helper.dart
index 3338e9d..61e7182 100644
--- a/sdk/lib/_internal/js_runtime/lib/js_helper.dart
+++ b/sdk/lib/_internal/js_runtime/lib/js_helper.dart
@@ -1132,7 +1132,7 @@
    * "call$4", then the object's "call$4" property should be used as if it was
    * the value of the catch-all property.
    */
-  static applyFunction2(Function function, List positionalArguments,
+  static applyFunction(Function function, List positionalArguments,
       Map<String, dynamic> namedArguments) {
     // Fast shortcut for the common case.
     if (JS('bool', '# instanceof Array', positionalArguments) &&
@@ -1300,162 +1300,6 @@
     }
   }
 
-  static applyFunction(Function function, List positionalArguments,
-      Map<String, dynamic> namedArguments) {
-    // Dispatch on presence of named arguments to improve tree-shaking.
-    //
-    // This dispatch is as simple as possible to help the compiler detect the
-    // common case of `null` namedArguments, either via inlining or
-    // specialization.
-    return namedArguments == null
-        ? applyFunctionWithPositionalArguments(function, positionalArguments)
-        : applyFunctionWithNamedArguments(
-            function, positionalArguments, namedArguments);
-  }
-
-  static applyFunctionWithPositionalArguments(
-      Function function, List positionalArguments) {
-    List arguments;
-
-    if (positionalArguments != null) {
-      if (JS('bool', '# instanceof Array', positionalArguments)) {
-        arguments = JS('JSArray', '#', positionalArguments);
-      } else {
-        arguments = new List.from(positionalArguments);
-      }
-    } else {
-      arguments = [];
-    }
-
-    if (arguments.length == 0) {
-      String selectorName = JS_GET_NAME(JsGetName.CALL_PREFIX0);
-      if (JS('bool', '!!#[#]', function, selectorName)) {
-        return JS('', '#[#]()', function, selectorName);
-      }
-    } else if (arguments.length == 1) {
-      String selectorName = JS_GET_NAME(JsGetName.CALL_PREFIX1);
-      if (JS('bool', '!!#[#]', function, selectorName)) {
-        return JS('', '#[#](#[0])', function, selectorName, arguments);
-      }
-    } else if (arguments.length == 2) {
-      String selectorName = JS_GET_NAME(JsGetName.CALL_PREFIX2);
-      if (JS('bool', '!!#[#]', function, selectorName)) {
-        return JS('', '#[#](#[0],#[1])', function, selectorName, arguments,
-            arguments);
-      }
-    } else if (arguments.length == 3) {
-      String selectorName = JS_GET_NAME(JsGetName.CALL_PREFIX3);
-      if (JS('bool', '!!#[#]', function, selectorName)) {
-        return JS('', '#[#](#[0],#[1],#[2])', function, selectorName, arguments,
-            arguments, arguments);
-      }
-    } else if (arguments.length == 4) {
-      String selectorName = JS_GET_NAME(JsGetName.CALL_PREFIX4);
-      if (JS('bool', '!!#[#]', function, selectorName)) {
-        return JS('', '#[#](#[0],#[1],#[2],#[3])', function, selectorName,
-            arguments, arguments, arguments, arguments);
-      }
-    } else if (arguments.length == 5) {
-      String selectorName = JS_GET_NAME(JsGetName.CALL_PREFIX5);
-      if (JS('bool', '!!#[#]', function, selectorName)) {
-        return JS('', '#[#](#[0],#[1],#[2],#[3],#[4])', function, selectorName,
-            arguments, arguments, arguments, arguments, arguments);
-      }
-    }
-    return _genericApplyFunctionWithPositionalArguments(function, arguments);
-  }
-
-  static _genericApplyFunctionWithPositionalArguments(
-      Function function, List arguments) {
-    int argumentCount = arguments.length;
-    String selectorName =
-        '${JS_GET_NAME(JsGetName.CALL_PREFIX)}\$$argumentCount';
-    var jsFunction = JS('var', '#[#]', function, selectorName);
-    if (jsFunction == null) {
-      var interceptor = getInterceptor(function);
-      jsFunction =
-          JS('', '#[#]', interceptor, JS_GET_NAME(JsGetName.CALL_CATCH_ALL));
-
-      if (jsFunction == null) {
-        return functionNoSuchMethod(function, arguments, null);
-      }
-      ReflectionInfo info = new ReflectionInfo(jsFunction);
-      int requiredArgumentCount = info.requiredParameterCount;
-      int maxArgumentCount =
-          requiredArgumentCount + info.optionalParameterCount;
-      if (info.areOptionalParametersNamed ||
-          requiredArgumentCount > argumentCount ||
-          maxArgumentCount < argumentCount) {
-        return functionNoSuchMethod(function, arguments, null);
-      }
-      arguments = new List.from(arguments);
-      for (int pos = argumentCount; pos < maxArgumentCount; pos++) {
-        arguments.add(getMetadata(info.defaultValue(pos)));
-      }
-    }
-    // We bound 'this' to [function] because of how we compile
-    // closures: escaped local variables are stored and accessed through
-    // [function].
-    return JS('var', '#.apply(#, #)', jsFunction, function, arguments);
-  }
-
-  static applyFunctionWithNamedArguments(Function function,
-      List positionalArguments, Map<String, dynamic> namedArguments) {
-    if (namedArguments.isEmpty) {
-      return applyFunctionWithPositionalArguments(
-          function, positionalArguments);
-    }
-    // TODO(ahe): The following code can be shared with
-    // JsInstanceMirror.invoke.
-    var interceptor = getInterceptor(function);
-    var jsFunction =
-        JS('', '#[#]', interceptor, JS_GET_NAME(JsGetName.CALL_CATCH_ALL));
-
-    if (jsFunction == null) {
-      return functionNoSuchMethod(
-          function, positionalArguments, namedArguments);
-    }
-    ReflectionInfo info = new ReflectionInfo(jsFunction);
-    if (info == null || !info.areOptionalParametersNamed) {
-      return functionNoSuchMethod(
-          function, positionalArguments, namedArguments);
-    }
-
-    if (positionalArguments != null) {
-      positionalArguments = new List.from(positionalArguments);
-    } else {
-      positionalArguments = [];
-    }
-    // Check the number of positional arguments is valid.
-    if (info.requiredParameterCount != positionalArguments.length) {
-      return functionNoSuchMethod(
-          function, positionalArguments, namedArguments);
-    }
-    var defaultArguments = new Map();
-    for (int i = 0; i < info.optionalParameterCount; i++) {
-      int index = i + info.requiredParameterCount;
-      var parameterName = info.parameterNameInOrder(index);
-      var value = info.defaultValueInOrder(index);
-      var defaultValue = getMetadata(value);
-      defaultArguments[parameterName] = defaultValue;
-    }
-    bool bad = false;
-    namedArguments.forEach((String parameter, value) {
-      if (defaultArguments.containsKey(parameter)) {
-        defaultArguments[parameter] = value;
-      } else {
-        // Extraneous named argument.
-        bad = true;
-      }
-    });
-    if (bad) {
-      return functionNoSuchMethod(
-          function, positionalArguments, namedArguments);
-    }
-    positionalArguments.addAll(defaultArguments.values);
-    return JS('', '#.apply(#, #)', jsFunction, function, positionalArguments);
-  }
-
   static StackTrace extractStackTrace(Error error) {
     return getTraceFromException(JS('', r'#.$thrownJsError', error));
   }