Move off eclipse-4.6 for now compiles fail after it was upgraded to 4.6.1.
Move off eclipse-4.6 for now compiles fail after it was upgraded to 4.6.1.

Switch back to 4.5 for now.

PiperOrigin-RevId: 137459651

google/j2cl,google/j2cl,google/j2cl,google/j2cl,google/j2cl