Move elide_url to its own component

testing/buildbot/chromium.mac.json

Index: testing/buildbot/chromium.mac.json
diff --git a/testing/buildbot/chromium.mac.json b/testing/buildbot/chromium.mac.json
index 17a3e0ae9f721be2f54ea0fb2ff0f34c15f47aab..f84dfb571c4ccc06c62602db888cb92310d217cb 100644
--- a/testing/buildbot/chromium.mac.json
+++ b/testing/buildbot/chromium.mac.json
@@ -219,6 +219,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "secure_display_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "skia_unittests"
       },
       {
@@ -470,6 +476,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "secure_display_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "skia_unittests"
       },
       {
@@ -727,6 +739,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "secure_display_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "skia_unittests"
       },
       {
@@ -984,6 +1002,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "secure_display_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "skia_unittests"
       },
       {
@@ -1242,6 +1266,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "secure_display_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "skia_unittests"
       },
       {