Use static_assert instead of SK_COMPILE_ASSERT.

src/pdf/SkPDFFont.cpp

Index: src/pdf/SkPDFFont.cpp
diff --git a/src/pdf/SkPDFFont.cpp b/src/pdf/SkPDFFont.cpp
index 017b0168b04d8625131cd1bf78dd2c6b7b78f74a..17623c7c3be3f4af7209475eaf8529b8bbbff3e9 100644
--- a/src/pdf/SkPDFFont.cpp
+++ b/src/pdf/SkPDFFont.cpp
@@ -603,8 +603,7 @@ static size_t get_subset_font_stream(const char* fontName,
         unsigned char* subsetFont = NULL;
         // sfntly requires unsigned int* to be passed in, as far as we know,
         // unsigned int is equivalent to uint32_t on all platforms.
-        SK_COMPILE_ASSERT(sizeof(unsigned int) == sizeof(uint32_t),
-                          unsigned_int_not_32_bits);
+        static_assert(sizeof(unsigned int) == sizeof(uint32_t), "unsigned_int_not_32_bits");
         int subsetFontSize = SfntlyWrapper::SubsetFont(fontName,
                                                        originalFont.begin(),
                                                        fontSize,