Approve new chrome snapshots (027 doesn't look right, though)

Author: cpsievert

inst/apps/004-mpg/tests/testthat/_snaps/linux-4.3/mytest/001.json

@@ -6,7 +6,7 @@
   "output": {
     "caption": "mpg ~ cyl",
     "mpgPlot": {
-      "src": "[image data hash: a0946aa68377aa327cb339f8164b0292]",
+      "src": "[image data hash: e3f0007da5cdba3bbcc441e0b9930ff8]",
       "width": 489.9844,
       "height": 400,
       "alt": "Plot object",

inst/apps/004-mpg/tests/testthat/_snaps/linux-4.3/mytest/002.png

@@ -6,7 +6,7 @@
   "output": {
     "caption": "mpg ~ am",
     "mpgPlot": {
-      "src": "[image data hash: 3f779075c7b23a6db935a4a10456f644]",
+      "src": "[image data hash: 883c461f6ecf9ade6e1ffe2339145866]",
       "width": 489.9844,
       "height": 400,
       "alt": "Plot object",

inst/apps/004-mpg/tests/testthat/_snaps/linux-4.3/mytest/003.json

@@ -6,7 +6,7 @@
   "output": {
     "caption": "mpg ~ gear",
     "mpgPlot": {
-      "src": "[image data hash: bcbc34fab1f84f52a52153d3f7e24f3e]",
+      "src": "[image data hash: 6896f01cc62f48ec5648b4bf0fca4f57]",
       "width": 489.9844,
       "height": 400,
       "alt": "Plot object",

inst/apps/004-mpg/tests/testthat/_snaps/linux-4.3/mytest/004.png

@@ -6,7 +6,7 @@
   "output": {
     "caption": "mpg ~ cyl",
     "mpgPlot": {
-      "src": "[image data hash: 02c2c88ac7aaa1c44ddc31d394d2f65c]",
+      "src": "[image data hash: 9782caeb93246da9a1b211b06aa63ce9]",
       "width": 489.9844,
       "height": 400,
       "alt": "Plot object",