Move assert.h/assert.cc from runtime/vm to runtime/platform

runtime/vm/resolver_test.cc

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+#include "platform/assert.h"
 #include "vm/assembler.h"
-#include "vm/assert.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
 #include "vm/object.h"
 #include "vm/resolver.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 #if defined(TARGET_ARCH_IA32)  // only ia32 can run execution tests.
@@ skipping 201 matching lines @@
                                  super_function_name,
                                  kNumPositionalArguments,
                                  kNumNamedArguments));
     EXPECT(!super_function.IsNull());
   }
 }
 
 #endif  // TARGET_ARCH_IA32.
 
 }  // namespace dart