[test] Measure gzip sizes without metadata. NFC (#24612)

Writing to a temporary gzip file, measuring and then deleting is both
inefficient, but also results in a slightly larger reported size because
it then also writes extra metadata like the original filename.

That metadata is not something we care about measuring, as more often
than not compression on the Web happens on the fly anyway.

Author: RReverser

test/code_size/audio_worklet_wasm.json

@@ -1,10 +1,10 @@
 {
   "a.html": 519,
-  "a.html.gz": 364,
+  "a.html.gz": 357,
   "a.js": 3853,
-  "a.js.gz": 2050,
+  "a.js.gz": 2045,
   "a.wasm": 1288,
-  "a.wasm.gz": 867,
+  "a.wasm.gz": 860,
   "total": 5660,
-  "total_gz": 3281
+  "total_gz": 3262
 }

test/code_size/embind_hello_wasm.json

@@ -1,10 +1,10 @@
 {
   "a.html": 552,
-  "a.html.gz": 380,
+  "a.html.gz": 373,
   "a.js": 7266,
-  "a.js.gz": 3321,
+  "a.js.gz": 3316,
   "a.wasm": 7294,
-  "a.wasm.gz": 3346,
+  "a.wasm.gz": 3339,
   "total": 15112,
-  "total_gz": 7047
+  "total_gz": 7028
 }

test/code_size/embind_val_wasm.json

@@ -1,10 +1,10 @@
 {
   "a.html": 552,
-  "a.html.gz": 380,
+  "a.html.gz": 373,
   "a.js": 5367,
-  "a.js.gz": 2540,
+  "a.js.gz": 2535,
   "a.wasm": 7468,
-  "a.wasm.gz": 3468,
+  "a.wasm.gz": 3461,
   "total": 13387,
-  "total_gz": 6388
+  "total_gz": 6369
 }

test/code_size/hello_wasm_worker_wasm.json

@@ -1,10 +1,10 @@
 {
   "a.html": 519,
-  "a.html.gz": 364,
+  "a.html.gz": 357,
   "a.js": 830,
-  "a.js.gz": 530,
+  "a.js.gz": 525,
   "a.wasm": 1885,
-  "a.wasm.gz": 1079,
+  "a.wasm.gz": 1072,
   "total": 3234,
-  "total_gz": 1973
+  "total_gz": 1954
 }

test/code_size/hello_webgl2_wasm.json

@@ -1,10 +1,10 @@
 {
   "a.html": 454,
-  "a.html.gz": 328,
+  "a.html.gz": 321,
   "a.js": 4386,
-  "a.js.gz": 2252,
+  "a.js.gz": 2247,
   "a.wasm": 8278,
-  "a.wasm.gz": 5627,
+  "a.wasm.gz": 5620,
   "total": 13118,
-  "total_gz": 8207
+  "total_gz": 8188
 }

test/code_size/hello_webgl2_wasm2js.json

@@ -1,8 +1,8 @@
 {
   "a.html": 346,
-  "a.html.gz": 262,
+  "a.html.gz": 255,
   "a.js": 18103,
-  "a.js.gz": 9771,
+  "a.js.gz": 9766,
   "total": 18449,
-  "total_gz": 10033
+  "total_gz": 10021
 }

test/code_size/hello_webgl_wasm.json

@@ -1,10 +1,10 @@
 {
   "a.html": 454,
-  "a.html.gz": 328,
+  "a.html.gz": 321,
   "a.js": 3924,
-  "a.js.gz": 2092,
+  "a.js.gz": 2087,
   "a.wasm": 8278,
-  "a.wasm.gz": 5627,
+  "a.wasm.gz": 5620,
   "total": 12656,
-  "total_gz": 8047
+  "total_gz": 8028
 }

test/code_size/hello_webgl_wasm2js.json

@@ -1,8 +1,8 @@
 {
   "a.html": 346,
-  "a.html.gz": 262,
+  "a.html.gz": 255,
   "a.js": 17630,
-  "a.js.gz": 9603,
+  "a.js.gz": 9598,
   "total": 17976,
-  "total_gz": 9865
+  "total_gz": 9853
 }

test/code_size/hello_world_wasm.json

@@ -1,10 +1,10 @@
 {
   "a.html": 552,
-  "a.html.gz": 380,
+  "a.html.gz": 373,
   "a.js": 287,
-  "a.js.gz": 247,
+  "a.js.gz": 242,
   "a.wasm": 95,
-  "a.wasm.gz": 108,
+  "a.wasm.gz": 101,
   "total": 934,
-  "total_gz": 735
+  "total_gz": 716
 }

test/code_size/hello_world_wasm2js.json

@@ -1,8 +1,8 @@
 {
   "a.html": 323,
-  "a.html.gz": 253,
+  "a.html.gz": 246,
   "a.js": 965,
-  "a.js.gz": 593,
+  "a.js.gz": 588,
   "total": 1288,
-  "total_gz": 846
+  "total_gz": 834
 }