Use browsers JSON.parse for parsing JSON.

runtime/bin/bin.gypi

Index: runtime/bin/bin.gypi
diff --git a/runtime/bin/bin.gypi b/runtime/bin/bin.gypi
index d2a1657255a4a2fd1f30e5906f8ff1bbd87ae2f7..e63cc66fc6a152a61ab8ff244c7d6fe8874fb6c6 100644
--- a/runtime/bin/bin.gypi
+++ b/runtime/bin/bin.gypi
@@ -8,6 +8,7 @@
     'io_cc_file': '<(SHARED_INTERMEDIATE_DIR)/io_gen.cc',
     'io_patch_cc_file': '<(SHARED_INTERMEDIATE_DIR)/io_patch_gen.cc',
     'json_cc_file': '<(SHARED_INTERMEDIATE_DIR)/json_gen.cc',
+    'json_patch_cc_file': '<(SHARED_INTERMEDIATE_DIR)/json_patch_gen.cc',
     'uri_cc_file': '<(SHARED_INTERMEDIATE_DIR)/uri_gen.cc',
     'utf_cc_file': '<(SHARED_INTERMEDIATE_DIR)/utf_gen.cc',
     'builtin_in_cc_file': 'builtin_in.cc',
@@ -185,7 +186,7 @@
         'json_dart': '<(SHARED_INTERMEDIATE_DIR)/json_gen.dart',
       },
       'includes': [
-        'json_sources.gypi',
+        '../../sdk/lib/json/json_sources.gypi',
       ],
       'actions': [
         {
@@ -228,6 +229,36 @@
       ]
     },
     {
+      'target_name': 'generate_json_patch_cc_file',
+      'type': 'none',
+      'includes': [
+        'json_sources.gypi',
+      ],
+      'actions': [
+        {
+          'action_name': 'generate_json_patch_cc',
+          'inputs': [
+            '../tools/create_string_literal.py',
+            '<(builtin_in_cc_file)',
+            '<@(_sources)',
+          ],
+          'outputs': [
+            '<(json_patch_cc_file)',
+          ],
+          'action': [
+            'python',
+            'tools/create_string_literal.py',
+            '--output', '<(json_patch_cc_file)',
+            '--input_cc', '<(builtin_in_cc_file)',
+            '--include', 'bin/builtin.h',
+            '--var_name', 'Builtin::json_patch_',
+            '<@(_sources)',
+          ],
+          'message': 'Generating ''<(json_patch_cc_file)'' file.'
+        },
+      ]
+    },
+    {
       'target_name': 'generate_uri_cc_file',
       'type': 'none',
       'variables': {
@@ -334,6 +365,7 @@
         'generate_io_cc_file',
         'generate_io_patch_cc_file',
         'generate_json_cc_file',
+        'generate_json_patch_cc_file',
         'generate_uri_cc_file',
         'generate_utf_cc_file',
       ],
@@ -463,6 +495,7 @@
         '<(io_cc_file)',
         '<(io_patch_cc_file)',
         '<(json_cc_file)',
+        '<(json_patch_cc_file)',
         '<(uri_cc_file)',
         '<(utf_cc_file)',
       ],
@@ -598,6 +631,7 @@
         '<(io_cc_file)',
         '<(io_patch_cc_file)',
         '<(json_cc_file)',
+        '<(json_patch_cc_file)',
         '<(uri_cc_file)',
         '<(utf_cc_file)',
         'snapshot_empty.cc',
@@ -653,6 +687,7 @@
         '<(io_cc_file)',
         '<(io_patch_cc_file)',
         '<(json_cc_file)',
+        '<(json_patch_cc_file)',
         '<(uri_cc_file)',
         '<(utf_cc_file)',
       ],