Revert of Implement .eh_frame writer and disassembler.

test/unittests/eh-frame-iterator-unittest.cc

-// Copyright 2016 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "src/eh-frame.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-// Test enabled only on supported architectures.
-#if defined(V8_TARGET_ARCH_X64) || defined(V8_TARGET_ARCH_ARM) || \
-    defined(V8_TARGET_ARCH_ARM64)
-
-using namespace v8::internal;
-
-namespace {
-
-class EhFrameIteratorTest : public testing::Test {};
-
-}  // namespace
-
-TEST_F(EhFrameIteratorTest, Values) {
-  // Assuming little endian.
-  static const byte kEncoded[] = {0xde, 0xc0, 0xad, 0xde, 0xef, 0xbe, 0xff};
-  EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
-  EXPECT_EQ(0xdeadc0de, iterator.GetNextUInt32());
-  EXPECT_EQ(0xbeef, iterator.GetNextUInt16());
-  EXPECT_EQ(0xff, iterator.GetNextByte());
-  EXPECT_TRUE(iterator.Done());
-}
-
-TEST_F(EhFrameIteratorTest, Skip) {
-  static const byte kEncoded[] = {0xde, 0xad, 0xc0, 0xde};
-  EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
-  iterator.Skip(2);
-  EXPECT_EQ(2, iterator.GetCurrentOffset());
-  EXPECT_EQ(0xc0, iterator.GetNextByte());
-  iterator.Skip(1);
-  EXPECT_TRUE(iterator.Done());
-}
-
-TEST_F(EhFrameIteratorTest, ULEB128Decoding) {
-  static const byte kEncoded[] = {0xe5, 0x8e, 0x26};
-  EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
-  EXPECT_EQ(624485, iterator.GetNextULeb128());
-  EXPECT_TRUE(iterator.Done());
-}
-
-TEST_F(EhFrameIteratorTest, SLEB128DecodingPositive) {
-  static const byte kEncoded[] = {0xe5, 0x8e, 0x26};
-  EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
-  EXPECT_EQ(624485, iterator.GetNextSLeb128());
-  EXPECT_TRUE(iterator.Done());
-}
-
-TEST_F(EhFrameIteratorTest, SLEB128DecodingNegative) {
-  static const byte kEncoded[] = {0x9b, 0xf1, 0x59};
-  EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
-  EXPECT_EQ(-624485, iterator.GetNextSLeb128());
-  EXPECT_TRUE(iterator.Done());
-}
-
-#endif