Change dawn_end2end_tests --skip-validation to --enable-toggles

--enable-toggles=skip_validation,foo,bar is the new way to enable
toggles in Dawn's tests. The other command line flags will be
removed.

Bug: dawn:571
Change-Id: Ia917943fb07abb53346ffe0022ff27b01db6f4db
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2538482Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827853}

testing/buildbot/chromium.dawn.json

@@ -32,7 +32,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--no-xvfb",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
@@ -287,7 +287,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--no-xvfb",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
@@ -542,7 +542,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--no-xvfb",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
@@ -797,7 +797,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--no-xvfb",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
@@ -1054,7 +1054,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -1307,7 +1307,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -1546,7 +1546,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -1799,7 +1799,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -2042,7 +2042,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -2262,7 +2262,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -2509,7 +2509,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -2756,7 +2756,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -3003,7 +3003,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -3252,7 +3252,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -3497,7 +3497,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -3742,7 +3742,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"
@@ -3987,7 +3987,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",
           "--exclusive-device-type-preference=discrete,integrated"

testing/buildbot/chromium.gpu.fyi.json

@@ -9183,7 +9183,7 @@
       },
       {
         "args": [
-          "--skip-validation",
+          "--enable-toggles=skip_validation",
           "--no-xvfb",
           "--use-gpu-in-tests",
           "--test-launcher-retry-limit=0",

testing/buildbot/test_suites.pyl

@@ -2407,7 +2407,7 @@
       'dawn_end2end_skip_validation_tests': {
         'mixins': ['dawn_end2end_gpu_test'],
         'args': [
-          '--skip-validation',
+          '--enable-toggles=skip_validation',
         ],
         'linux_args': [ '--no-xvfb' ],
         'test': 'dawn_end2end_tests',