Make GrPaint have a variable sized array of color and coverage stages rather than a fixed size.

src/gpu/GrDrawState.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDrawState.h"
 #include "GrPaint.h"
 
@@ skipping 14 matching lines @@
     fCommon.fViewMatrix.reset();
     return true;
 }
 
 void GrDrawState::setFromPaint(const GrPaint& paint, const SkMatrix& vm, GrRenderTarget* rt) {
     GrAssert(0 == fBlockEffectRemovalCnt || 0 == this->numTotalStages());
 
     fColorStages.reset();
     fCoverageStages.reset();
 
-    for (int i = 0; i < GrPaint::kMaxColorStages; ++i) {
-        if (paint.isColorStageEnabled(i)) {
-            fColorStages.push_back(paint.getColorStage(i));
-        }
+    for (int i = 0; i < paint.numColorStages(); ++i) {
+        fColorStages.push_back(paint.getColorStage(i));
     }
 
-    for (int i = 0; i < GrPaint::kMaxCoverageStages; ++i) {
-        if (paint.isCoverageStageEnabled(i)) {
-            fCoverageStages.push_back(paint.getCoverageStage(i));
-        }
+    for (int i = 0; i < paint.numCoverageStages(); ++i) {
+        fCoverageStages.push_back(paint.getCoverageStage(i));
     }
 
     this->setRenderTarget(rt);
 
     fCommon.fViewMatrix = vm;
 
     // These have no equivalent in GrPaint, set them to defaults
     fCommon.fBlendConstant = 0x0;
     fCommon.fCoverage = 0xffffffff;
     fCommon.fDrawFace = kBoth_DrawFace;
@@ skipping 424 matching lines @@
         fDrawState->fColorStages[s].saveCoordChange(&fSavedCoordChanges[i]);
         fDrawState->fColorStages[s].localCoordChange(coordChangeMatrix);
     }
 
     int numCoverageStages = fDrawState->numCoverageStages();
     for (int s = 0; s < numCoverageStages; ++s, ++i) {
         fDrawState->fCoverageStages[s].saveCoordChange(&fSavedCoordChanges[i]);
         fDrawState->fCoverageStages[s].localCoordChange(coordChangeMatrix);
     }
 }