Reland Implement .eh_frame writer and disassembler.

src/v8.gyp

Index: src/v8.gyp
diff --git a/src/v8.gyp b/src/v8.gyp
index 28335f382908fb1fad5b2c23e7f41cca57b3ab69..93573952193164eae7198a8c492b5c9efb4e34e6 100644
--- a/src/v8.gyp
+++ b/src/v8.gyp
@@ -1223,6 +1223,8 @@
             'arm/macro-assembler-arm.h',
             'arm/simulator-arm.cc',
             'arm/simulator-arm.h',
+            'arm/eh-frame-arm.h',
+            'arm/eh-frame-arm.cc',
             'compiler/arm/code-generator-arm.cc',
             'compiler/arm/instruction-codes-arm.h',
             'compiler/arm/instruction-scheduler-arm.cc',
@@ -1277,6 +1279,8 @@
             'arm64/simulator-arm64.h',
             'arm64/utils-arm64.cc',
             'arm64/utils-arm64.h',
+            'arm64/eh-frame-arm64.h',
+            'arm64/eh-frame-arm64.cc',
             'compiler/arm64/code-generator-arm64.cc',
             'compiler/arm64/instruction-codes-arm64.h',
             'compiler/arm64/instruction-scheduler-arm64.cc',
@@ -1506,6 +1510,8 @@
             'compiler/x64/instruction-codes-x64.h',
             'compiler/x64/instruction-scheduler-x64.cc',
             'compiler/x64/instruction-selector-x64.cc',
+            'x64/eh-frame-x64.h',
+            'x64/eh-frame-x64.cc',
           ],
         }],
         ['v8_target_arch=="ppc" or v8_target_arch=="ppc64"', {