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[8.x] deps: V8: backport 20 CPU profiler commits from upstream

Rodrigo Muino Tomonari requested to merge github/fork/psmarshall/backport-cpu-profiler-to-v8.x into v8.x-staging
Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • commit message follows commit guidelines

@ofrobots

[cpu-profiler] Fix bugs and add tests for JITLineInfoTable https://chromium.googlesource.com/v8/v8/+/4feb5ce7fd5ef8c933f3f5dff2eca1173f85c1e9

[cpu-profiler] Fix incorrect line number calculation. https://chromium.googlesource.com/v8/v8/+/ddb2856f39632f9e9f623d3cdb4600e636172031

[cpu-profiler] Use std::unordered_map for hashmaps. https://chromium.googlesource.com/v8/v8/+/35985ce6abc80b85264fe3b87b246fed5f1806e6

[cpu-profiler] Do not store CodeEntries between profiling sessions. https://chromium.googlesource.com/v8/v8.git/+/8ec48b2117b8092c4956f1ee11a0c85bec3ba1f8

[cpu-profiler] Remove name_prefix field from CodeEntry https://chromium.googlesource.com/v8/v8.git/+/6f72af25fe43218b60c68129073ddcddb631566e

[cpu-profiler] Extract rare used fields of CodeEntry to an optional object. https://chromium.googlesource.com/v8/v8.git/+/fcc1ebb55aab38013855834f556f6e874e0eb8b3

[profiler] Refactoring: decouple StringsStorage from Heap object. https://chromium.googlesource.com/v8/v8/+/a31320f59c911a277566d6c2fa0b0f2ac83e0748

[cpu-profiler] Add a HandleScope to limit memory consumption. https://chromium.googlesource.com/v8/v8.git/+/3e9f8a4f635e2d946651d6a4df81378266f32dc9

[cpu-profiler] Lazily create CPU profiler. https://chromium.googlesource.com/v8/v8/+/1426ea1d6d45be0b4d9476bdb5bf3f27cfe578a0

[cpu-profiler] turn several std::map's into unordered_map's. https://chromium.googlesource.com/v8/v8/+/3ed5dfb8a3cbc7aa0017bd01c2fdd6227485b8ad

[cpu-profiler] Eagerly delete not used CodeEntry'es https://chromium.googlesource.com/v8/v8.git/+/c6c28f7a412a88df12055e953630a9e93cc64d49

[cpu-profiler] Move bailout reason into rare_info struct https://chromium.googlesource.com/v8/v8.git/+/29ea4d1ef5360e71c61ecf8db6a5a0a0c3391fd1

[cpu-profiler] Save space in the SourcePositionTable by using a vector. https://chromium.googlesource.com/v8/v8.git/+/1cb19f0e0a93adbac8c11bc906f951bd8098722d

[cpu-profiler] Only store deopt inline frames for functions that need it https://chromium.googlesource.com/v8/v8.git/+/0bfcbdd4726920755e51dab28c18ab93e050819b

[cpu-profiler] Add a new profiling mode with a more detailed call tree. https://chromium.googlesource.com/v8/v8.git/+/ecae80cdb350dde1e654c531b56f5b6c44dc8c77

[cpu-profiler] Reuse free slots in code_entries_ https://chromium.googlesource.com/v8/v8.git/+/3e1126bf15e62c433c4e9cb21316d182f691c63a

[cpu-profiler] Use instruction start as the key for the CodeMap https://chromium.googlesource.com/v8/v8.git/+/ba752ea4c50713dff1e94f45a79db3ba968a8d66

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