Add missing const qualifier to compile with clang/llvm.
Add missing const qualifier to compile with clang/llvm.

BUG: 21298442
Change-Id: Iad211237fdb0128d8f4490419687bf1da1cd261c

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base