Split opts_check_arm.cpp into per-class files

src/opts/SkBlurImage_opts_arm.cpp

 /*
- * Copyright 2013 The Android Open Source Project
+ * Copyright 2014 ARM Ltd.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#include "SkBlurImage_opts.h"
+#include "SkBlurImage_opts_neon.h"
+#include "SkUtilsArm.h"
 
 bool SkBoxBlurGetPlatformProcs(SkBoxBlurProc* boxBlurX,
                                SkBoxBlurProc* boxBlurY,
                                SkBoxBlurProc* boxBlurXY,
                                SkBoxBlurProc* boxBlurYX) {
+#if SK_ARM_NEON_IS_NONE
     return false;
+#else
+#if SK_ARM_NEON_IS_DYNAMIC
+    if (!sk_cpu_arm_has_neon()) {
+        return false;
+    }
+#endif
+    return SkBoxBlurGetPlatformProcs_NEON(boxBlurX, boxBlurY, boxBlurXY, boxBlurYX);
+#endif
 }