Tweaks for long formal parameters and method body '{' formatting.

pkg/analyzer/test/services/data/cu_tests.data

 >>>
 class
 A
 {
 }
 <<<
 class A {
 }
 >>> dartbug.com/15876
 // fisk
@@ skipping 256 matching lines @@
 @meta
 class Bar {
   @meta
   String foo;
   @meta
   int bar() => 42;
 }
 >>>
 import 'a.dart' deferred as a;
 <<<
-import 'a.dart' deferred as a;
+import 'a.dart' deferred as a;
+>>> Long parameters list, place the opening curly brace ({) on the same line
+class Foo {
+  method(int a012345678901234567890123456789, int b012345678901234567890123456)
+  {
+    print('42');
+  }
+}
+<<<
+class Foo {
+  method(int a012345678901234567890123456789,
+      int b012345678901234567890123456) {
+    print('42');
+  }
+}
+>>> Long parameters list, this.field
+class A {
+  int a0123456789012345678901234;
+  int b0123456789012345678901234;
+  int c0123456789012345678901234;
+  int d0123456789012345678901234;
+  A(this.a0123456789012345678901234, this.b0123456789012345678901234, this.c0123456789012345678901234,
+                    this.d0123456789012345678901234);
+}
+<<<
+class A {
+  int a0123456789012345678901234;
+  int b0123456789012345678901234;
+  int c0123456789012345678901234;
+  int d0123456789012345678901234;
+  A(this.a0123456789012345678901234, this.b0123456789012345678901234,
+      this.c0123456789012345678901234, this.d0123456789012345678901234);
+}