Fix asan tests failing on swarming. They need libc++.so.

BUG=414808
R=maruel@chromium.org

Review URL: https://codereview.chromium.org/601283005

Cr-Commit-Position: refs/heads/master@{#296800}

chrome/interactive_ui_tests.isolate

@@ -115,6 +115,6 @@
     }],
   ],
   'includes': [
-    '../third_party/icu/icu.isolate',
+    '../base/base.isolate',
   ],
 }

content/content_browsertests.isolate

@@ -116,6 +116,6 @@
     }],
   ],
   'includes': [
-    '../third_party/icu/icu.isolate',
+    '../base/base.isolate',
   ],
 }

content/content_unittests.isolate

@@ -107,6 +107,6 @@
     }],
   ],
   'includes': [
-    '../third_party/icu/icu.isolate',
+    '../base/base.isolate',
   ],
 }