Fix 32/64 bit warnings on g++-4.2.

tests/ColorPrivTest.cpp

 #include "Test.h"
 #include "TestClassDef.h"
 
 #include "SkColorPriv.h"
 
 #define ASSERT(expr) REPORTER_ASSERT(r, expr)
 
 DEF_TEST(Splay, r) {
     const SkPMColor color = 0xA1B2C3D4;
 
     uint32_t ag, rb;
     SkSplay(color, &ag, &rb);
     ASSERT(ag == 0x00A100C3);
     ASSERT(rb == 0x00B200D4);
     ASSERT(SkUnsplay(ag << 8, rb << 8) == color);
 
     const uint64_t agrb = SkSplay(color);
-    ASSERT(agrb == 0x00A100C300B200D4);
+    ASSERT(agrb == 0x00A100C300B200D4ULL);
     ASSERT(SkUnsplay(agrb<<8) == color);
 }
 
 DEF_TEST(FourByteInterp, r) {
     const SkPMColor src = 0xAB998877, dst = 0x66334455;
     for (unsigned scale = 0; scale <= 256; scale++) {
         ASSERT(SkFourByteInterp256(src, dst, scale) == SkFastFourByteInterp256(src, dst, scale));
     }
 
     for (unsigned scale = 0; scale < 256; scale++) {
         // SkFourByteInterp and SkFastFourByteInterp convert from [0, 255] to [0, 256] differently.
         // In particular, slow may end up a little too high (weirdly, fast is more accurate).
         const SkPMColor slow = SkFourByteInterp(src, dst, scale);
         const SkPMColor fast = SkFastFourByteInterp(src, dst, scale);
 
         const int deltaA = SkGetPackedA32(slow) - SkGetPackedA32(fast);
         const int deltaR = SkGetPackedR32(slow) - SkGetPackedR32(fast);
         const int deltaG = SkGetPackedG32(slow) - SkGetPackedG32(fast);
         const int deltaB = SkGetPackedB32(slow) - SkGetPackedB32(fast);
 
         ASSERT(deltaA == 0 || deltaA == 1);
         ASSERT(deltaR == 0 || deltaR == 1);
         ASSERT(deltaG == 0 || deltaG == 1);
         ASSERT(deltaB == 0 || deltaB == 1);
     }
 }