Make GrColorSpaceInfo store GrColorType.

This is largely redundant with GrPixelConfig. However, we intend to
remove GrPixelConfig.

Bug: skia:7580

Change-Id: I03d92303be832711f7821f8a97d36387c9b04a9f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/222883
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/text/GrAtlasManager.cpp b/src/gpu/text/GrAtlasManager.cpp
index 014f463..952c58b 100644
--- a/src/gpu/text/GrAtlasManager.cpp
+++ b/src/gpu/text/GrAtlasManager.cpp
@@ -82,7 +82,8 @@
   * Write the contents of the surface proxy to a PNG. Returns true if successful.
   * @param filename      Full path to desired file
   */
-static bool save_pixels(GrContext* context, GrSurfaceProxy* sProxy, const char* filename) {
+static bool save_pixels(GrContext* context, GrSurfaceProxy* sProxy, GrColorType colorType,
+                        const char* filename) {
     if (!sProxy) {
         return false;
     }
@@ -94,8 +95,8 @@
         return false;
     }
 
-    sk_sp<GrSurfaceContext> sContext(
-            context->priv().makeWrappedSurfaceContext(sk_ref_sp(sProxy), kUnknown_SkAlphaType));
+    sk_sp<GrSurfaceContext> sContext(context->priv().makeWrappedSurfaceContext(
+            sk_ref_sp(sProxy), colorType, kUnknown_SkAlphaType));
     if (!sContext || !sContext->asTextureProxy()) {
         return false;
     }
@@ -138,8 +139,8 @@
 #else
                 filename.printf("fontcache_%d%d%d.png", gDumpCount, i, pageIdx);
 #endif
-
-                save_pixels(context, proxies[pageIdx].get(), filename.c_str());
+                auto ct = mask_format_to_gr_color_type(AtlasIndexToMaskFormat(i));
+                save_pixels(context, proxies[pageIdx].get(), ct, filename.c_str());
             }
         }
     }
diff --git a/src/gpu/text/GrAtlasManager.h b/src/gpu/text/GrAtlasManager.h
index 321c86f..0f31202 100644
--- a/src/gpu/text/GrAtlasManager.h
+++ b/src/gpu/text/GrAtlasManager.h
@@ -122,17 +122,8 @@
     bool initAtlas(GrMaskFormat);
 
     // There is a 1:1 mapping between GrMaskFormats and atlas indices
-    static int MaskFormatToAtlasIndex(GrMaskFormat format) {
-        static const int sAtlasIndices[] = {
-            kA8_GrMaskFormat,
-            kA565_GrMaskFormat,
-            kARGB_GrMaskFormat,
-        };
-        static_assert(SK_ARRAY_COUNT(sAtlasIndices) == kMaskFormatCount, "array_size_mismatch");
-
-        SkASSERT(sAtlasIndices[format] < kMaskFormatCount);
-        return sAtlasIndices[format];
-    }
+    static int MaskFormatToAtlasIndex(GrMaskFormat format) { return static_cast<int>(format); }
+    static GrMaskFormat AtlasIndexToMaskFormat(int idx) { return static_cast<GrMaskFormat>(idx); }
 
     GrDrawOpAtlas* getAtlas(GrMaskFormat format) const {
         format = this->resolveMaskFormat(format);
diff --git a/src/gpu/text/GrTextContext.cpp b/src/gpu/text/GrTextContext.cpp
index 03374d0..5f1098a 100644
--- a/src/gpu/text/GrTextContext.cpp
+++ b/src/gpu/text/GrTextContext.cpp
@@ -239,7 +239,8 @@
 
     // Setup dummy SkPaint / GrPaint / GrRenderTargetContext
     sk_sp<GrRenderTargetContext> rtc(context->priv().makeDeferredRenderTargetContext(
-        format, SkBackingFit::kApprox, 1024, 1024, kRGBA_8888_GrPixelConfig, nullptr));
+            format, SkBackingFit::kApprox, 1024, 1024, kRGBA_8888_GrPixelConfig,
+            GrColorType::kRGBA_8888, nullptr));
 
     SkMatrix viewMatrix = GrTest::TestMatrixInvertible(random);