Merge branch 'add_timer' of https://github.com/guru4elephant/Paddle into add_timer

test=develop

paddle/fluid/platform/CMakeLists.txt

@@ -85,7 +85,7 @@ nv_test(cudnn_helper_test SRCS cudnn_helper_test.cc DEPS dynload_cuda)
 nv_test(transform_test SRCS transform_test.cu DEPS memory place device_context)
 
 cc_library(timer SRCS timer.cc)
-cc_test(timer_test SRCS timer_test.cc)
+cc_test(timer_test SRCS timer_test.cc DEPS timer)
 
 cc_library(device_tracer SRCS device_tracer.cc DEPS boost profiler_proto framework_proto ${GPU_CTX_DEPS})
 cc_library(profiler SRCS profiler.cc DEPS device_context device_tracer)