Change SkColor4f to RGBA channel order

include/core/SkColor.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkColor_DEFINED
 #define SkColor_DEFINED
 
@@ skipping 148 matching lines @@
 typedef SkPMColor (*SkXfermodeProc)(SkPMColor src, SkPMColor dst);
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 struct SkPM4f;
 
 /*
  *  The float values are 0...1 unpremultiplied
  */
 struct SkColor4f {
-    float fA;
     float fR;
     float fG;
     float fB;
+    float fA;
 
     bool operator==(const SkColor4f& other) const {
         return fA == other.fA && fR == other.fR && fG == other.fG && fB == other.fB;
     }
     bool operator!=(const SkColor4f& other) const {
         return !(*this == other);
     }
 
-    const float* vec() const { return &fA; }
-    float* vec() { return &fA; }
+    const float* vec() const { return &fR; }
+    float* vec() { return &fR; }
 
-    static SkColor4f Pin(float a, float r, float g, float b);
+    static SkColor4f Pin(float r, float g, float b, float a);
     static SkColor4f FromColor(SkColor);
 
+    SkColor toSkColor() const;
+
     SkColor4f pin() const {
-        return Pin(fA, fR, fG, fB);
+        return Pin(fR, fG, fB, fA);
     }
 
     SkPM4f premul() const;
 };
 
 #endif