skia: Fix build in ISO C++11 mode
skia: Fix build in ISO C++11 mode

Fix macro constructs that could be mistaken for new string literals

Signed-off-by: Bernhard Rosenkraenzer <0363de98439ff22157633d0b0c13ae8bbe3d448c@linaro.org>

yinquan529/platform-external-skia,yinquan529/platform-external-skia,yinquan529/platform-external-skia,yinquan529/platform-external-skia,yinquan529/platform-external-skia,yinquan529/platform-external-skia