Move SkShader::fLocalMatrix into SkShader constructor.

include/core/SkColorShader.h

Index: include/core/SkColorShader.h
diff --git a/include/core/SkColorShader.h b/include/core/SkColorShader.h
index 56e5add4a31a446667ed5c121f92432de9f80657..0cad28a7cf8b87c47e74e6214326ae284d39ad90 100644
--- a/include/core/SkColorShader.h
+++ b/include/core/SkColorShader.h
@@ -22,13 +22,13 @@ public:
     /** Create a ColorShader that will inherit its color from the Paint
         at draw time.
     */
-    SkColorShader();
+    SkColorShader(const SkMatrix* localMatrix = NULL);
 
     /** Create a ColorShader that ignores the color in the paint, and uses the
         specified color. Note: like all shaders, at draw time the paint's alpha
         will be respected, and is applied to the specified color.
     */
-    SkColorShader(SkColor c);
+    SkColorShader(SkColor c, const SkMatrix* localMatrix = NULL);
 
     virtual bool isOpaque() const SK_OVERRIDE;