Rename GrColorType::kRGB_565 to kBGR_565

All our other color types put the low bits as the first component in the
name. For 565 B is the low bits and R is the high bits so the name is being
updated to reflect that.

Bug: skia:9170
Change-Id: I67be32440d6c6fa8a345532fe144720d23cf340a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/221337
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrSurfaceContext.cpp b/src/gpu/GrSurfaceContext.cpp
index 02916f1..c12cc2e 100644
--- a/src/gpu/GrSurfaceContext.cpp
+++ b/src/gpu/GrSurfaceContext.cpp
@@ -58,7 +58,7 @@
     switch (ct) {
         case GrColorType::kUnknown:          return false;
         case GrColorType::kAlpha_8:          return false;
-        case GrColorType::kRGB_565:          return false;
+        case GrColorType::kBGR_565:          return false;
         case GrColorType::kABGR_4444:        return true;
         case GrColorType::kRGBA_8888:        return true;
         case GrColorType::kRGB_888x:         return false;