Media Session: move all tests but mojo/ ones to external/wpt/.

third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json

Index: third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json
diff --git a/third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json b/third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json
index ebe5863d7ec1747542ebf78b455a85e99d084476..725cf18adc59616a75b211429b8a00d142290825 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json
+++ b/third_party/WebKit/LayoutTests/external/wpt/MANIFEST.json
@@ -3781,6 +3781,11 @@
      {}
     ]
    ],
+   "./MANIFEST.json": [
+    [
+     {}
+    ]
+   ],
    "./README.md": [
     [
      {}
@@ -13981,6 +13986,11 @@
      {}
     ]
    ],
+   "mediasession/idlharness-expected.txt": [
+    [
+     {}
+    ]
+   ],
    "pointerevents/README.md": [
     [
      {}
@@ -29137,6 +29147,30 @@
      {}
     ]
    ],
+   "mediasession/idlharness.html": [
+    [
+     "/mediasession/idlharness.html",
+     {}
+    ]
+   ],
+   "mediasession/mediametadata.html": [
+    [
+     "/mediasession/mediametadata.html",
+     {}
+    ]
+   ],
+   "mediasession/playbackstate.html": [
+    [
+     "/mediasession/playbackstate.html",
+     {}
+    ]
+   ],
+   "mediasession/setactionhandler.html": [
+    [
+     "/mediasession/setactionhandler.html",
+     {}
+    ]
+   ],
    "pointerevents/idlharness.html": [
     [
      "/pointerevents/idlharness.html",
@@ -34122,6 +34156,10 @@
    "89af73c41d456ee93bd40921e96414c1908fc48c",
    "support"
   ],
+  "./MANIFEST.json": [
+   "db04ce240a1c5bcba4d575f5ac8fded6af0d19e9",
+   "support"
+  ],
   "./README.md": [
    "47d52ff4a87b49dec2fb5ceb98211fb1b9af34fb",
    "support"
@@ -50818,6 +50856,26 @@
    "2907c67a3ab9c22ba98f03acf16adc2f2b31ee30",
    "testharness"
   ],
+  "mediasession/idlharness-expected.txt": [
+   "9d213cce22b4300c0496ba5438bcc647e276688c",
+   "support"
+  ],
+  "mediasession/idlharness.html": [
+   "9aa84a0143daf03d9a95108d0407fda2443c9849",
+   "testharness"
+  ],
+  "mediasession/mediametadata.html": [
+   "0f0c1f7e3b58321a76229fa5a93e80b6863f181f",
+   "testharness"
+  ],
+  "mediasession/playbackstate.html": [
+   "e9edd18778d437b039bc45f2e3f35db725528447",
+   "testharness"
+  ],
+  "mediasession/setactionhandler.html": [
+   "70a1f9e81faa3dbbe320a71a008e4594a29878a8",
+   "testharness"
+  ],
   "pointerevents/README.md": [
    "91a8bd86357b0d96ba3ab8f08f88c28436de484c",
    "support"