Reland Implement .eh_frame writer and disassembler.

test/cctest/test-eh-frame-hdr.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 "src/objects.h"
 #include "test/cctest/cctest.h"
 
 using namespace v8::internal;
 
@@ skipping 50 matching lines @@
   //  |   offset to   |                |
   //  |   .eh_frame   |                |
   //  +---------------+                |
   //  |      ...      |               ...
   //
   //  (*) the size of the CIE is platform dependent.
   //
   CHECK_EQ(eh_frame_hdr.offset_to_eh_frame(), -(4 + 30));        // A -> D
   CHECK_EQ(eh_frame_hdr.offset_to_procedure(), -(30 + 6 + 10));  // B -> E
   CHECK_EQ(eh_frame_hdr.offset_to_fde(),
-           -(30 - EhFrameHdr::kCIESize));  // B -> C
+           -(30 - EhFrameWriter::kCIESize));  // B -> C
 }
 
 TEST(DummyEhFrameHdr) {
   CcTest::InitializeVM();
   HandleScope handle_scope(CcTest::i_isolate());
 
   byte buffer[10] = {0};  // The content is not relevant in this test
 
   CodeDesc code_desc;
   code_desc.buffer = &buffer[0];
   code_desc.buffer_size = sizeof(buffer);
   code_desc.constant_pool_size = 0;
   code_desc.instr_size = sizeof(buffer);
   code_desc.reloc_size = 0;
   code_desc.origin = nullptr;
   code_desc.unwinding_info = nullptr;
   code_desc.unwinding_info_size = 0;
 
   Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
       code_desc, 0, Handle<Object>::null());
 
   EhFrameHdr eh_frame_hdr(*code);
   // A dummy header has an empty LUT
   CHECK_EQ(eh_frame_hdr.lut_entries_number(), 0);
   // These values should be irrelevant, but check that they have been zeroed.
   CHECK_EQ(eh_frame_hdr.offset_to_eh_frame(), 0);
   CHECK_EQ(eh_frame_hdr.offset_to_procedure(), 0);
   CHECK_EQ(eh_frame_hdr.offset_to_fde(), 0);
 }