Revert "This is a speculative chain of reverts to improve a Chrome"

src/v8.gyp

Index: src/v8.gyp
diff --git a/src/v8.gyp b/src/v8.gyp
index e74710626d0610efec87bffb86afb3946bd79e91..8b5fe6bea76876eaae093594cf8b73d3e9d0516c 100644
--- a/src/v8.gyp
+++ b/src/v8.gyp
@@ -171,7 +171,6 @@
       ],
       'sources': [
         '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
-        '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
         '<(INTERMEDIATE_DIR)/snapshot.cc',
@@ -230,7 +229,6 @@
       ],
       'sources': [
         '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
-        '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
         'snapshot/snapshot-empty.cc',
@@ -2221,7 +2219,6 @@
             'inputs': [
               '../tools/concatenate-files.py',
               '<(SHARED_INTERMEDIATE_DIR)/libraries.bin',
-              '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental.bin',
               '<(SHARED_INTERMEDIATE_DIR)/libraries-extras.bin',
               '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental-extras.bin',
             ],
@@ -2295,13 +2292,7 @@
           'debug/debug.js',
           'debug/liveedit.js',
         ],
-        'experimental_library_files': [
-          'js/macros.py',
-          'messages.h',
-          'js/harmony-atomics.js',
-        ],
         'libraries_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries.bin',
-        'libraries_experimental_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental.bin',
         'libraries_extras_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-extras.bin',
         'libraries_experimental_extras_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental-extras.bin',
         'conditions': [
@@ -2344,38 +2335,6 @@
           ],
         },
         {
-          'action_name': 'js2c_experimental',
-          'inputs': [
-            '../tools/js2c.py',
-            '<@(experimental_library_files)',
-          ],
-          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc'],
-          'action': [
-            'python',
-            '../tools/js2c.py',
-            '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
-            'EXPERIMENTAL',
-            '<@(experimental_library_files)',
-          ],
-        },
-        {
-          'action_name': 'js2c_experimental_bin',
-          'inputs': [
-            '../tools/js2c.py',
-            '<@(experimental_library_files)',
-          ],
-          'outputs': ['<@(libraries_experimental_bin_file)'],
-          'action': [
-            'python',
-            '../tools/js2c.py',
-            '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
-            'EXPERIMENTAL',
-            '<@(experimental_library_files)',
-            '--startup_blob', '<@(libraries_experimental_bin_file)',
-            '--nojs',
-          ],
-        },
-        {
           'action_name': 'js2c_extras',
           'inputs': [
             '../tools/js2c.py',