Implementation of EGL_KHR_fence_sync.

Bug 21662268

Change-Id: Iefdc18303c42967ccc25fd6580851e05520dc2b9
Reviewed-on: https://swiftshader-review.googlesource.com/4071
Tested-by: Nicolas Capens <capn@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
diff --git a/src/OpenGL/libGLES_CM/exports.map b/src/OpenGL/libGLES_CM/exports.map
index 22246b1..dcf548f 100644
--- a/src/OpenGL/libGLES_CM/exports.map
+++ b/src/OpenGL/libGLES_CM/exports.map
@@ -205,6 +205,10 @@
     glDrawTexxvOES;
     glDrawTexfOES;
     glDrawTexfvOES;
+    eglCreateSyncKHR;
+    eglDestroySyncKHR;
+    eglClientWaitSyncKHR;
+    eglGetSyncAttribKHR;
 
     libGLES_CM_swiftshader;