Non-substantive GPU text changes

This CL pulls some cleanup changes out of the omnibus GPU text CL. It:

Removes the unused GrTextStrike::removeID method
Removes the unused GrTextStrike::countGlyphs method
Removes the GrTextureStrike::fAtlasedGlyphs member variable
Adds an "int SkSpan::count() const" helper method

Change-Id: I88eefd929a5576093de58af85582567d8df5610a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/280706
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Herb Derby <herb@google.com>
diff --git a/src/atlastext/SkAtlasTextTarget.cpp b/src/atlastext/SkAtlasTextTarget.cpp
index a37b42a..9ae1a18 100644
--- a/src/atlastext/SkAtlasTextTarget.cpp
+++ b/src/atlastext/SkAtlasTextTarget.cpp
@@ -222,7 +222,6 @@
 }
 
 void GrAtlasTextOp::executeForTextTarget(SkAtlasTextTarget* target) {
-    FlushInfo flushInfo;
     auto& context = target->context()->internal();
     auto atlasManager = context.grContext()->priv().getAtlasManager();
     auto resourceProvider = context.grContext()->priv().resourceProvider();
@@ -239,10 +238,12 @@
         subRun->translateVerticesIfNeeded(fGeoData[i].fDrawMatrix, fGeoData[i].fDrawOrigin);
         GrTextBlob::VertexRegenerator regenerator(
                 resourceProvider, fGeoData[i].fSubRunPtr, &context, atlasManager);
-        int subRunEnd = subRun->fGlyphs.size();
+        int subRunEnd = subRun->fGlyphs.count();
         for (int subRunIndex = 0; subRunIndex < subRunEnd;) {
             auto [ok, glyphsRegenerated] = regenerator.regenerate(subRunIndex, subRunEnd);
-            if (!ok) { break; }
+            if (!ok) {
+                break;
+            }
 
             context.recordDraw(subRun->quadStart(subRunIndex), glyphsRegenerated,
                                fGeoData[i].fDrawMatrix, target->handle());
diff --git a/src/core/SkSpan.h b/src/core/SkSpan.h
index 3baaab5..06d9201 100644
--- a/src/core/SkSpan.h
+++ b/src/core/SkSpan.h
@@ -36,6 +36,7 @@
     constexpr auto crbegin() const { return std::make_reverse_iterator(this->cend()); }
     constexpr auto crend() const { return std::make_reverse_iterator(this->cbegin()); }
     constexpr T* data() const { return fPtr; }
+    constexpr int count() const { return SkTo<int>(fSize); }
     constexpr size_t size() const { return fSize; }
     constexpr bool empty() const { return fSize == 0; }
     constexpr size_t size_bytes() const { return fSize * sizeof(T); }
diff --git a/src/gpu/ops/GrAtlasTextOp.cpp b/src/gpu/ops/GrAtlasTextOp.cpp
index 8338e05..01024c6 100644
--- a/src/gpu/ops/GrAtlasTextOp.cpp
+++ b/src/gpu/ops/GrAtlasTextOp.cpp
@@ -367,7 +367,7 @@
 
         // Where the subRun begins and ends relative to totalGlyphsRegened.
         int subRunBegin = totalGlyphsRegened;
-        int subRunEnd = subRunBegin + (int)subRun->fGlyphs.size();
+        int subRunEnd = subRunBegin + subRun->fGlyphs.count();
 
         // Draw all the glyphs in the subRun.
         while (totalGlyphsRegened < subRunEnd) {
@@ -379,7 +379,9 @@
             auto[ok, glyphsRegenerated] = regenerator.regenerate(drawBegin, drawEnd);
 
             // There was a problem allocating the glyph in the atlas. Bail.
-            if(!ok) { return; }
+            if (!ok) {
+                return;
+            }
 
             // Update all the vertices for glyphsRegenerate glyphs.
             if (glyphsRegenerated > 0) {
diff --git a/src/gpu/text/GrStrikeCache.cpp b/src/gpu/text/GrStrikeCache.cpp
index 46fa61d..0dab676 100644
--- a/src/gpu/text/GrStrikeCache.cpp
+++ b/src/gpu/text/GrStrikeCache.cpp
@@ -139,16 +139,6 @@
 GrTextStrike::GrTextStrike(const SkDescriptor& key)
     : fFontScalerKey(key) {}
 
-void GrTextStrike::removeID(GrDrawOpAtlas::PlotLocator plotLocator) {
-    fCache.foreach([this, plotLocator](GrGlyph** glyph){
-        if ((*glyph)->fPlotLocator == plotLocator) {
-            (*glyph)->fPlotLocator = GrDrawOpAtlas::kInvalidPlotLocator;
-            fAtlasedGlyphs--;
-            SkASSERT(fAtlasedGlyphs >= 0);
-        }
-    });
-}
-
 GrDrawOpAtlas::ErrorCode GrTextStrike::addGlyphToAtlas(const SkGlyph& skGlyph,
                                                        GrMaskFormat expectedMaskFormat,
                                                        bool isScaledGlyph,
@@ -194,7 +184,6 @@
             grGlyph->fAtlasLocation.fY += 1;
         }
         SkASSERT(grGlyph->fPlotLocator != GrDrawOpAtlas::kInvalidPlotLocator);
-        fAtlasedGlyphs++;
     }
     return result;
 }
diff --git a/src/gpu/text/GrStrikeCache.h b/src/gpu/text/GrStrikeCache.h
index ad320eb..0520634 100644
--- a/src/gpu/text/GrStrikeCache.h
+++ b/src/gpu/text/GrStrikeCache.h
@@ -46,12 +46,6 @@
                                              GrAtlasManager*,
                                              GrGlyph*);
 
-    // testing
-    int countGlyphs() const { return fCache.count(); }
-
-    // remove any references to this plot
-    void removeID(GrDrawOpAtlas::PlotLocator);
-
 private:
     struct HashTraits {
         // GetKey and Hash for the the hash table.
@@ -67,8 +61,6 @@
     SkAutoDescriptor fFontScalerKey;
     SkArenaAlloc fAlloc{512};
 
-    int fAtlasedGlyphs{0};
-
     friend class GrStrikeCache;
 };
 
diff --git a/src/gpu/text/GrTextBlob.cpp b/src/gpu/text/GrTextBlob.cpp
index a4cc0ca..2e005cd 100644
--- a/src/gpu/text/GrTextBlob.cpp
+++ b/src/gpu/text/GrTextBlob.cpp
@@ -531,7 +531,7 @@
                 target->drawShape(clip, runPaint, ctm, shape);
             }
         } else {
-            int glyphCount = subRun->fGlyphs.size();
+            int glyphCount = subRun->fGlyphs.count();
             if (0 == glyphCount) {
                 continue;
             }
@@ -853,7 +853,7 @@
         auto [success, glyphsPlacedInAtlas] = this->updateTextureCoordinates(begin, end);
 
         // Update atlas generation if there are no more glyphs to put in the atlas.
-        if (success && begin + glyphsPlacedInAtlas == (int)fSubRun->fGlyphs.size()) {
+        if (success && begin + glyphsPlacedInAtlas == fSubRun->fGlyphs.count()) {
             // Need to get the freshest value of the atlas' generation because
             // updateTextureCoordinates may have changed it.
             fSubRun->fAtlasGeneration = fFullAtlasManager->atlasGeneration(fSubRun->maskFormat());
@@ -861,7 +861,7 @@
         return {success, glyphsPlacedInAtlas};
     } else {
         // The atlas hasn't changed, so our texture coordinates are still valid.
-        if (end == (int)fSubRun->fGlyphs.size()) {
+        if (end == fSubRun->fGlyphs.count()) {
             // The atlas hasn't changed and the texture coordinates are all still valid. Update
             // all the plots used to the new use token.
             fFullAtlasManager->setUseTokenBulk(*fSubRun->bulkUseToken(),