PlzNavigate: adds Linux runs of content_browsertests to the CQ.

content/test/BUILD.gn

Index: content/test/BUILD.gn
diff --git a/content/test/BUILD.gn b/content/test/BUILD.gn
index 6fa4380bf642ad5a0ab90ae7d11c6afdedcf66ee..c22c15fde590ed1cb0162f4fef75dea614f1473f 100644
--- a/content/test/BUILD.gn
+++ b/content/test/BUILD.gn
@@ -420,6 +420,9 @@ test("content_browsertests") {
           data += [ "$root_out_dir/content_browsertests.exe.pdb" ]
         }
       }
+      if (is_linux) {
+        data += [ "//testing/buildbot/filters/browser-side-navigation.linux.content_browsertests.filter" ]

[clamy, 2016/06/27 12:45:12]

This is different from what is done for site-isolation. Shouldn't we follow
what's being done there?

[carlosk, 2016/06/27 13:27:35]

See comment #8 where dpranke@ suggests to not do that. He says creating a new
build target would be unnecessary.

[clamy, 2016/06/27 13:29:29]

Acknowledged.

+      }
     }
   }