CacheStorage: Add CacheStorageEagerReading to fieldtrial_testing_config.json.

Bug: 1010624
Change-Id: Iae9dbbef3ef98a46abc6ecc2c3ef8908d8a4fc9c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1884930
Commit-Queue: Ben Kelly <wanderview@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710163}

testing/variations/fieldtrial_testing_config.json

@@ -1443,6 +1443,25 @@
             ]
         }
     ],
+    "CacheStorageEagerReading": [
+        {
+            "platforms": [
+                "windows",
+                "mac",
+                "chromeos",
+                "linux",
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled2",
+                    "enable_features": [
+                        "CacheStorageEagerReading"
+                    ]
+                }
+            ]
+        }
+    ],
     "CacheStorageSequence": [
         {
             "platforms": [

third_party/blink/web_tests/VirtualTestSuites

@@ -1099,7 +1099,7 @@
   {
     "prefix": "cache-storage-eager-reading",
     "base": "external/wpt/service-workers",
-    "args": ["--enable-features=CacheStorageEagerReading"]
+    "args": ["--disable-features=CacheStorageEagerReading"]
   },
   {
     "prefix": "conditional-appcache-delay",

third_party/blink/web_tests/virtual/cache-storage-eager-reading/external/wpt/service-workers/README.txt

 This suite runs the ServiceWorker and CacheStorage tests with the
-CacheStorageEagerReading feature enabled.  This makes CacheStorage immediately
-read response bodies when cache.match() called within a FetchEvent handler.
-See crbug.com/1010624.
+CacheStorageEagerReading feature disabled.  This feature makes
+CacheStorage immediately read response bodies when cache.match()
+called within a FetchEvent handler.  See crbug.com/1010624.