Added virtual test suite with 1MB MSE buffers

third_party/WebKit/LayoutTests/VirtualTestSuites

Index: third_party/WebKit/LayoutTests/VirtualTestSuites
diff --git a/third_party/WebKit/LayoutTests/VirtualTestSuites b/third_party/WebKit/LayoutTests/VirtualTestSuites
index 976ec13bf5a14e7d560e18739929c403dcf976b5..904c971e9d8627f5701f47c980aa80dd8cc4acb5 100644
--- a/third_party/WebKit/LayoutTests/VirtualTestSuites
+++ b/third_party/WebKit/LayoutTests/VirtualTestSuites
@@ -163,6 +163,12 @@
     "args": ["--enable-blink-features=MediaSession"]
   },
   {
+    "prefix": "mse-1mb-buffers",
+    "base": "http/tests/media/media-source/mse-1mb-buffers",
+    "args": ["--mse-audio-buffer-size-limit=1048576",
+             "--mse-video-buffer-size-limit=1048576"]
+  },
+  {
     "prefix": "sharedarraybuffer",
     "base": "fast/workers",
     "args": ["--js-flags=--harmony-sharedarraybuffer",