Convert Site Isolation Win bot to --isolate-extensions [2nd attempt].

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 9ce92b3371e94e7afb52290553bcb5b24351b000..979516334defb18457ffd6753e3399277243b3f5 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1160,9 +1160,6 @@ if (!is_android) {
 
   group("mash_browser_tests") {
     testonly = true
-    data = [
-      "//testing/buildbot/filters/mojo.fyi.browser_tests.filter",
-    ]
     data_deps = [
       ":browser_tests",
     ]
@@ -1232,7 +1229,9 @@ test("browser_tests") {
     "//third_party/WebKit/public:features",
   ]
 
-  data_deps = []
+  data_deps = [
+    "//testing/buildbot/filters:browser_tests",
+  ]
 
   data = []
 
@@ -2010,14 +2009,9 @@ test("browser_tests") {
         ]
       }
 
-      if (is_linux) {
-        data += [ "//testing/buildbot/filters/browser-side-navigation.linux.browser_tests.filter" ]
-      }
-
       if (is_win || is_linux) {
         sources += [ "../browser/nacl_host/test/nacl_gdb_browsertest.cc" ]
         data_deps += [ "//chrome/browser/nacl_host/test:mock_nacl_gdb" ]
-        data += [ "//testing/buildbot/filters/site-per-process.browser_tests.filter" ]
       }
       if (is_win) {
         # TODO(halyavin) NaCl on Windows can't open debug stub socket in