fix compiler error where SK_SCALAR_IS_FLOAT is not defined.

src/core/SkMatrix.cpp

Index: src/core/SkMatrix.cpp
diff --git a/src/core/SkMatrix.cpp b/src/core/SkMatrix.cpp
index cd7bcea176486de32b97d2a00a1a0afb1de97b64..e9bbfb984af98baa740c682c69e0f14b8d114267 100644
--- a/src/core/SkMatrix.cpp
+++ b/src/core/SkMatrix.cpp
@@ -51,14 +51,13 @@ enum {
 #else
     #define scalarAsInt(x)  (x)
     static const int32_t kScalar1Int = (1 << 16);
-    static const int32_t kPersp1Int  = (1 << 30);
 #endif
 
 uint8_t SkMatrix::computePerspectiveTypeMask() const {
 #ifdef SK_SCALAR_SLOW_COMPARES
     if (SkScalarAs2sCompliment(fMat[kMPersp0]) |
             SkScalarAs2sCompliment(fMat[kMPersp1]) |
-            (SkScalarAs2sCompliment(fMat[kMPersp2]) - kPersp1Int)) {
+            (SkScalarAs2sCompliment(fMat[kMPersp2]) - SK_Fract1)) {
         return SkToU8(kORableMasks);
     }
 #else
@@ -84,7 +83,7 @@ uint8_t SkMatrix::computeTypeMask() const {
 #ifdef SK_SCALAR_SLOW_COMPARES
     if (SkScalarAs2sCompliment(fMat[kMPersp0]) |
             SkScalarAs2sCompliment(fMat[kMPersp1]) |
-            (SkScalarAs2sCompliment(fMat[kMPersp2]) - kPersp1Int)) {
+            (SkScalarAs2sCompliment(fMat[kMPersp2]) - SK_Fract1)) {
         return SkToU8(kORableMasks);
     }