Reorganize BRD code in new tools directory

tools/android/SkBitmapRegionDecoderPriv.h

Index: tools/android/SkBitmapRegionDecoderPriv.h
diff --git a/tools/SkCodecTools.h b/tools/android/SkBitmapRegionDecoderPriv.h
similarity index 94%
rename from tools/SkCodecTools.h
rename to tools/android/SkBitmapRegionDecoderPriv.h
index 285d3a21dee1e3a9bcc3cb215fb0c401430796af..d7423b05fd5fed12b60c3523a49aab5c3dc52128 100644
--- a/tools/SkCodecTools.h
+++ b/tools/android/SkBitmapRegionDecoderPriv.h
@@ -5,8 +5,8 @@
  * found in the LICENSE file.
  */
 
-#ifndef SkCodecTools_DEFINED
-#define SkCodecTools_DEFINED
+#ifndef SkBitmapRegionDecoderPriv_DEFINED
+#define SkBitmapRegionDecoderPriv_DEFINED
 
 inline float get_scale_from_sample_size(uint32_t sampleSize) {
     return 1.0f / (float) sampleSize;
@@ -60,4 +60,4 @@ inline SubsetType adjust_subset_rect(const SkISize& imageDims, SkIRect* subset,
     return SubsetType::kFullyInside_SubsetType;
 }
 
-#endif // SkCodecTools_DEFINED
+#endif // SkBitmapRegionDecoderPriv_DEFINED