Make fragment processor iterators work with range for loops.

When iterating over the coord transforms or texture samplers of a
FP also have access to the owning FP.

Pass a coord transform range to GPs rather than a pointer to an
iterator.

Change-Id: If7c829a67dce6600d7f49e12d6f49f685dcace3a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/256216
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
diff --git a/src/gpu/ccpr/GrVSCoverageProcessor.cpp b/src/gpu/ccpr/GrVSCoverageProcessor.cpp
index e61c76e..231c046 100644
--- a/src/gpu/ccpr/GrVSCoverageProcessor.cpp
+++ b/src/gpu/ccpr/GrVSCoverageProcessor.cpp
@@ -19,8 +19,8 @@
 
 private:
     void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor&,
-                 FPCoordTransformIter&& transformIter) final {
-        this->setTransformDataHelper(SkMatrix::I(), pdman, &transformIter);
+                 const CoordTransformRange& transformRange) final {
+        this->setTransformDataHelper(SkMatrix::I(), pdman, transformRange);
     }
 
     void onEmitCode(EmitArgs&, GrGPArgs*) override;