Adding mojo_test_apk in the fyi waterfall.

mojo/mojo.gyp

Index: mojo/mojo.gyp
diff --git a/mojo/mojo.gyp b/mojo/mojo.gyp
index 5cd9e580a9d68f487a3c59c3cf741225b598ea09..c099b5d02b8f7bfc6bb45340ab3c0863ca442466 100644
--- a/mojo/mojo.gyp
+++ b/mojo/mojo.gyp
@@ -649,6 +649,13 @@
             'resource_dir': '<(DEPTH)/mojo/android/javatests/apk',
             'native_lib_target': 'libmojo_java_unittest',
             'is_test_apk': 1,
+            # Given that this apk tests itself, it needs to bring emma with it
+            # when instrumented.
+            'conditions': [
+              ['emma_coverage != 0', {
+                'emma_instrument': 1,
+              }],
+            ],
           },
           'includes': [ '../build/java_apk.gypi' ],
         },