Enable media_perftests continuous runs on windows and mac.

testing/buildbot/chromium.perf.json

Index: testing/buildbot/chromium.perf.json
diff --git a/testing/buildbot/chromium.perf.json b/testing/buildbot/chromium.perf.json
index 26754227673ebd2ba36d5ad152cca3f6dfdf683b..5d6ebbd96729b4ccc750a8645983192ad6d11991 100644
--- a/testing/buildbot/chromium.perf.json
+++ b/testing/buildbot/chromium.perf.json
@@ -14554,6 +14554,25 @@
         }
       },
       {
+        "args": [],
+        "isolate_name": "media_perftests",
+        "name": "media_perftests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "gpu": "8086:0166",
+              "id": "build105-b1",
+              "os": "Mac-10.11",
+              "pool": "Chrome-perf"
+            }
+          ],
+          "expiration": 21600,
+          "hard_timeout": 7200,
+          "io_timeout": 3600
+        }
+      },
+      {
         "args": [
           "memory.blink_memory_mobile",
           "-v",
@@ -92387,6 +92406,25 @@
         }
       },
       {
+        "args": [],
+        "isolate_name": "media_perftests",
+        "name": "media_perftests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "gpu": "102b:0534",
+              "id": "build134-m1",
+              "os": "Windows-10-10240",
+              "pool": "Chrome-perf"
+            }
+          ],
+          "expiration": 21600,
+          "hard_timeout": 7200,
+          "io_timeout": 3600
+        }
+      },
+      {
         "args": [
           "memory.blink_memory_mobile",
           "-v",
@@ -103544,6 +103582,25 @@
         }
       },
       {
+        "args": [],
+        "isolate_name": "media_perftests",
+        "name": "media_perftests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "gpu": "1002:6779",
+              "id": "build104-m1",
+              "os": "Windows-2008ServerR2-SP1",
+              "pool": "Chrome-perf"
+            }
+          ],
+          "expiration": 21600,
+          "hard_timeout": 7200,
+          "io_timeout": 3600
+        }
+      },
+      {
         "args": [
           "memory.blink_memory_mobile",
           "-v",
@@ -125839,6 +125896,25 @@
         }
       },
       {
+        "args": [],
+        "isolate_name": "media_perftests",
+        "name": "media_perftests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "gpu": "10de:104a",
+              "id": "build95-m1",
+              "os": "Windows-2008ServerR2-SP1",
+              "pool": "Chrome-perf"
+            }
+          ],
+          "expiration": 21600,
+          "hard_timeout": 7200,
+          "io_timeout": 3600
+        }
+      },
+      {
         "args": [
           "memory.blink_memory_mobile",
           "-v",
@@ -136996,6 +137072,25 @@
         }
       },
       {
+        "args": [],
+        "isolate_name": "media_perftests",
+        "name": "media_perftests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "gpu": "102b:0532",
+              "id": "build188-m1",
+              "os": "Windows-2008ServerR2-SP1",
+              "pool": "Chrome-perf"
+            }
+          ],
+          "expiration": 21600,
+          "hard_timeout": 7200,
+          "io_timeout": 3600
+        }
+      },
+      {
         "args": [
           "memory.blink_memory_mobile",
           "-v",
@@ -159310,6 +159405,25 @@
         }
       },
       {
+        "args": [],
+        "isolate_name": "media_perftests",
+        "name": "media_perftests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "gpu": "102b:0532",
+              "id": "build146-m1",
+              "os": "Windows-2012ServerR2-SP0",
+              "pool": "Chrome-perf"
+            }
+          ],
+          "expiration": 21600,
+          "hard_timeout": 7200,
+          "io_timeout": 3600
+        }
+      },
+      {
         "args": [
           "memory.blink_memory_mobile",
           "-v",