Rebaseline size tests

Not sure why but some of them decreasd by ~3%. Increases don't seem to
be meaningful; they are usually ~0.3%.

Author: aheejin

test/code_size/embind_hello_wasm.json

@@ -3,8 +3,8 @@
   "a.html.gz": 380,
   "a.js": 9718,
   "a.js.gz": 4291,
-  "a.wasm": 7728,
-  "a.wasm.gz": 3502,
-  "total": 17998,
-  "total_gz": 8173
+  "a.wasm": 7506,
+  "a.wasm.gz": 3457,
+  "total": 17776,
+  "total_gz": 8128
 }

test/code_size/embind_val_wasm.json

@@ -2,9 +2,9 @@
   "a.html": 552,
   "a.html.gz": 380,
   "a.js": 6849,
-  "a.js.gz": 2947,
-  "a.wasm": 9568,
-  "a.wasm.gz": 4911,
-  "total": 16969,
-  "total_gz": 8238
+  "a.js.gz": 2948,
+  "a.wasm": 9263,
+  "a.wasm.gz": 4761,
+  "total": 16664,
+  "total_gz": 8089
 }

test/code_size/random_printf_wasm.json

@@ -1,6 +1,6 @@
 {
-  "a.html": 12686,
-  "a.html.gz": 6930,
-  "total": 12686,
-  "total_gz": 6930
+  "a.html": 12694,
+  "a.html.gz": 6914,
+  "total": 12694,
+  "total_gz": 6914
 }

test/code_size/random_printf_wasm2js.json

@@ -1,6 +1,6 @@
 {
-  "a.html": 17266,
-  "a.html.gz": 7515,
-  "total": 17266,
-  "total_gz": 7515
+  "a.html": 17270,
+  "a.html.gz": 7507,
+  "total": 17270,
+  "total_gz": 7507
 }