No bug - Reference topobjdir less in Gradle configuration. r=me

DONTBUILD NPOTB

--HG--
extra : commitid : 8VUgBD0oOSW
extra : rebase_source : 3523f477a372f3150bc63cbf95ba4d31cf103718
extra : histedit_source : fb6f44d9fd4b011ef2f0f5b3cf1c7683b3b55c35

mobile/android/gradle/app/build.gradle

@@ -33,11 +33,11 @@ android {
     sourceSets {
         androidTest {
             java {
-                srcDir "${topobjdir}/mobile/android/gradle/app/src/robocop_harness"
-                srcDir "${topobjdir}/mobile/android/gradle/app/src/robocop"
-                srcDir "${topobjdir}/mobile/android/gradle/app/src/background"
-                srcDir "${topobjdir}/mobile/android/gradle/app/src/browser"
-                srcDir "${topobjdir}/mobile/android/gradle/app/src/javaaddons"
+                srcDir "src/robocop_harness"
+                srcDir "src/robocop"
+                srcDir "src/background"
+                srcDir "src/browser"
+                srcDir "src/javaaddons"
             }
         }
     }