[EFL] Fix build problem after r175098
https://bugs.webkit.org/show_bug.cgi?id=138002

Reviewed by Gyuyoung Kim.

Add ECORE_X dependency to avoid linking problems while building unit tests.

* PlatformEfl.cmake:

Change-Id: I9228d141456c3b34b61424aa4715cef85534104f

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@175114 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/WebKit2/PlatformEfl.cmake b/Source/WebKit2/PlatformEfl.cmake
index 221378b..5759c54 100644
--- a/Source/WebKit2/PlatformEfl.cmake
+++ b/Source/WebKit2/PlatformEfl.cmake
@@ -464,6 +464,12 @@
     gtest
 )
 
+if (ENABLE_ECORE_X)
+    list(APPEND EWK2UnitTests_LIBRARIES
+        ${ECORE_X_LIBRARIES}
+    )
+endif ()
+
 set(WEBKIT2_EFL_TEST_DIR "${WEBKIT2_DIR}/UIProcess/API/efl/tests")
 set(TEST_RESOURCES_DIR ${WEBKIT2_EFL_TEST_DIR}/resources)
 set(TEST_EXTENSIONS_DIR ${WEBKIT2_EFL_TEST_DIR}/extensions)