Revert "Create an app snapshot of the Dart front end."

runtime/platform/globals.h

 // 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.
 
 #ifndef RUNTIME_PLATFORM_GLOBALS_H_
 #define RUNTIME_PLATFORM_GLOBALS_H_
 
 // __STDC_FORMAT_MACROS has to be defined before including <inttypes.h> to
 // enable platform independent printf format specifiers.
 #ifndef __STDC_FORMAT_MACROS
@@ skipping 444 matching lines @@
 #else
 #error Unexpected architecture word size
 #endif
 
 // Byte sizes.
 const int kWordSize = sizeof(word);
 const int kDoubleSize = sizeof(double);  // NOLINT
 const int kFloatSize = sizeof(float);    // NOLINT
 const int kQuadSize = 4 * kFloatSize;
 const int kSimd128Size = sizeof(simd128_value_t);  // NOLINT
-const int kInt64Size = sizeof(int64_t);            // NOLINT
 const int kInt32Size = sizeof(int32_t);            // NOLINT
 const int kInt16Size = sizeof(int16_t);            // NOLINT
 #ifdef ARCH_IS_32_BIT
 const int kWordSizeLog2 = 2;
 const uword kUwordMax = kMaxUint32;
 #else
 const int kWordSizeLog2 = 3;
 const uword kUwordMax = kMaxUint64;
 #endif
 
@@ skipping 234 matching lines @@
 // tag in the ICData and check it when recreating the flow graph in
 // optimizing compiler. Enable it for other modes (product, release) if needed
 // for debugging.
 #if defined(DEBUG)
 #define TAG_IC_DATA
 #endif
 
 }  // namespace dart
 
 #endif  // RUNTIME_PLATFORM_GLOBALS_H_