Break method lines based on line length.

mojom/mojom_parser/formatter/formatter_test.go

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package formatter
 
 import (
         "strings"
         "testing"
 )
@@ skipping 49 matching lines @@
 interface InterfaceFoo {  // Interface comment.
         const int8 const_in_interface = 20;
 
   // Method 1 comment.
   method1@5(int8 hello@10);
   // Method 2 comment.
         method2([MinVersion=5] int8 hello) => (Foo bar@20);
         method3();
         method4() => (Foo bar);
         method5(int8 p1 /* p1 comment */, int16 p2);  // method comment
-        method6(int8 p1, int16 p2)
-            => (int8 p1, int16 p2);
-        method7(int8 p1,
-          int16 p2,
-          int16 p3)
-            => (int8 p1, int16 p2);
+        method6(WayTooLongAndReallyLongFactoryVisitoryFactory field1,
+                WayTooLongAndReallyLongFactoryVisitoryFactory field2)
+            => (int8 alpha);
 };
 
 // Final Comments.
 `
 
         // TODO(azani): Remove this and just fix the tabs.
         original = strings.Replace(original, "\t", "  ", -1)
         original = strings.Replace(original, "\t//", "  //", -1)
 
         actual, err := FormatMojom("test.mojom", original)
         if err != nil {
                 t.Fatalf("Parser was not supposed to fail: %s", err.Error())
         }
 
         if original != actual {
                 t.Fatalf("\nExpected:\n%v\n\n*****\n\nActual:\n%v eof", original, actual)
         }
 }