Enable flattening and unflattening of SkColorSpace

src/core/SkMatrix44.cpp

Index: src/core/SkMatrix44.cpp
diff --git a/src/core/SkMatrix44.cpp b/src/core/SkMatrix44.cpp
index 34b532751966008d44cbe9282034c1ed38537dee..56c2e8a1428ab6eccabadc521a8eaf76b1e69305 100644
--- a/src/core/SkMatrix44.cpp
+++ b/src/core/SkMatrix44.cpp
@@ -85,6 +85,17 @@ void SkMatrix44::asColMajorf(float dst[]) const {
 #endif
 }
 
+void SkMatrix44::as4x3ColMajorf(float dst[]) const {
+    const SkMScalar* src = &fMat[0][0];
+#ifdef SK_MSCALAR_IS_DOUBLE
+    for (int i = 0; i < 12; ++i) {
+        dst[i] = SkMScalarToFloat(src[i]);
+    }
+#elif defined SK_MSCALAR_IS_FLOAT
+    memcpy(dst, src, 12 * sizeof(float));
+#endif
+}
+
 void SkMatrix44::asColMajord(double dst[]) const {
     const SkMScalar* src = &fMat[0][0];
 #ifdef SK_MSCALAR_IS_DOUBLE
@@ -217,6 +228,14 @@ void SkMatrix44::set3x3ColMajorf(const float src[]) {
     this->dirtyTypeMask();
 }
 
+void SkMatrix44::set4x3ColMajorf(const float src[]) {
+    fMat[0][0] = src[0]; fMat[0][1] = src[1]; fMat[0][2] = src[2];  fMat[0][3] = src[3];
+    fMat[1][0] = src[4]; fMat[1][1] = src[5]; fMat[1][2] = src[6];  fMat[1][3] = src[7];
+    fMat[2][0] = src[8]; fMat[2][1] = src[9]; fMat[2][2] = src[10]; fMat[2][3] = src[11];
+    fMat[3][0] = 0;      fMat[3][1] = 0;      fMat[3][2] = 0;       fMat[3][3] = 1;
+    this->dirtyTypeMask();
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkMatrix44::setTranslate(SkMScalar dx, SkMScalar dy, SkMScalar dz) {