Revert of [test] Make msan work for v8 stand-alone. (patchset #6 id:100001 of...

Revert of [test] Make msan work for v8 stand-alone. (patchset #6 id:100001 of https://codereview.chromium.org/802583003/)

Reason for revert:
Compile failures: http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/2047

Original issue's description:
> [test] Make msan work for v8 stand-alone.
>
> The msan configuration can be used in combination with
> v8_use_snapshot=false.
>
> BUG=chromium:425187
> LOG=n
>
> Committed: https://crrev.com/a65ef0d53fc28b0908f228938c6d84effa83c596
> Cr-Commit-Position: refs/heads/master@{#28064}

TBR=jochen@chromium.org,earthdok@chromium.org,svenpanne@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:425187

Review URL: https://codereview.chromium.org/1104073002

Cr-Commit-Position: refs/heads/master@{#28068}

build/standalone.gypi

@@ -35,10 +35,6 @@
     'component%': 'static_library',
     'clang_dir%': 'third_party/llvm-build/Release+Asserts',
     'clang_xcode%': 0,
-    # Track where uninitialized memory originates from. From fastest to
-    # slowest: 0 - no tracking, 1 - track only the initial allocation site, 2
-    # - track the chain of stores leading from allocation site to use site.
-    'msan_track_origins%': 1,
     'visibility%': 'hidden',
     'v8_enable_backtrace%': 0,
     'v8_enable_i18n_support%': 1,
@@ -319,36 +315,6 @@
         ],
       },
     }],
-    ['msan==1 and OS!="mac"', {
-      'target_defaults': {
-        'cflags_cc+': [
-          '-fno-omit-frame-pointer',
-          '-gline-tables-only',
-          '-fsanitize=memory',
-          '-fsanitize-memory-track-origins=<(msan_track_origins)',
-          '-fPIC',
-        ],
-        'cflags+': [
-          '-fPIC',
-        ],
-        'cflags!': [
-          '-fno-exceptions',
-          '-fomit-frame-pointer',
-        ],
-        'ldflags': [
-          '-fsanitize=memory',
-        ],
-        'defines': [
-          'MEMORY_SANITIZER',
-        ],
-        'dependencies': [
-          # Use libc++ (third_party/libc++ and third_party/libc++abi) instead of
-          # stdlibc++ as standard library. This is intended to use for instrumented
-          # builds.
-          '<(DEPTH)/buildtools/third_party/libc++/libc++.gyp:libcxx_proxy',
-        ],
-      },
-    }],
     ['asan==1 and OS=="mac"', {
       'target_defaults': {
         'xcode_settings': {