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

runtime/vm/code_index_table_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/class_finalizer.h"
 #include "vm/code_index_table.h"
-
-#include "vm/assert.h"
-#include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/object.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 // Compiler only implemented on IA32 and x64 now.
 #if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
 
 TEST_CASE(CodeIndexTable) {
@@ skipping 130 matching lines @@
   EXPECT(code_index_table->LookupCode(pc) == code.raw());
   EXPECT(code.Size() > 750 * KB);
   pc = code.EntryPoint() + 750 * KB;
   EXPECT(code_index_table->LookupFunction(pc) == function.raw());
   EXPECT(code_index_table->LookupCode(pc) == code.raw());
 }
 
 #endif  // TARGET_ARCH_IA32 || TARGET_ARCH_X64
 
 }  // namespace dart