cc: Use SkMScalar instead of doubles everywhere in cc

cc/animation/transform_operation.h

Index: cc/animation/transform_operation.h
diff --git a/cc/animation/transform_operation.h b/cc/animation/transform_operation.h
index d5f2830daf6263534f5732c2da01277f281a250f..47036733478bff0b742be0346657736154814fe6 100644
--- a/cc/animation/transform_operation.h
+++ b/cc/animation/transform_operation.h
@@ -32,26 +32,26 @@ struct TransformOperation {
   gfx::Transform matrix;
 
   union {
-    double perspective_depth;
+    SkMScalar perspective_depth;
 
     struct {
-      double x, y;
+      SkMScalar x, y;
     } skew;
 
     struct {
-      double x, y, z;
+      SkMScalar x, y, z;
     } scale;
 
     struct {
-      double x, y, z;
+      SkMScalar x, y, z;
     } translate;
 
     struct {
       struct {
-        double x, y, z;
+        SkMScalar x, y, z;
       } axis;
 
-      double angle;
+      SkMScalar angle;
     } rotate;
   };