Add entries to field trial test config for the fresher devices studies.

Bug: 1030266
Change-Id: I50a93d7bdafea8034f8ace100e25d9d98e385a0c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2093480
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#748389}

testing/variations/fieldtrial_testing_config.json

@@ -5113,6 +5113,29 @@
             ]
         }
     ],
+    "SharingFilterDevices": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_strict",
+                    "params": {
+                        "SharingPulseDeltaAndroidHours": "0",
+                        "SharingPulseDeltaDesktopHours": "0"
+                    },
+                    "enable_features": [
+                        "SharingMatchPulseInterval"
+                    ]
+                }
+            ]
+        }
+    ],
     "SharingWebRTC": [
         {
             "platforms": [
@@ -5288,6 +5311,28 @@
             ]
         }
     ],
+    "SyncRefreshDeviceInfo": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled_1_hour",
+                    "params": {
+                        "PulseIntervalMinutes": "60"
+                    },
+                    "enable_features": [
+                        "PulseInterval"
+                    ]
+                }
+            ]
+        }
+    ],
     "SyncUSSNigori": [
         {
             "platforms": [