Remove unused SaveLayerInfo::fValid field

src/gpu/GrLayerHoister.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrLayerCache.h"
 #include "GrLayerHoister.h"
 #include "SkCanvas.h"
 #include "SkRecordDraw.h"
 #include "GrRecordReplaceDraw.h"
 #include "SkGrPixelRef.h"
 #include "SkSurface.h"
 
 // Create the layer information for the hoisted layer and secure the
 // required texture/render target resources.
 static void prepare_for_hoisting(GrLayerCache* layerCache, 
-                             const SkPicture* topLevelPicture,
-                             const GrAccelData::SaveLayerInfo& info,
-                             SkTDArray<GrHoistedLayer>* atlased,
-                             SkTDArray<GrHoistedLayer>* nonAtlased,
-                             SkTDArray<GrHoistedLayer>* recycled) {
+                                 const SkPicture* topLevelPicture,
+                                 const GrAccelData::SaveLayerInfo& info,
+                                 SkTDArray<GrHoistedLayer>* atlased,
+                                 SkTDArray<GrHoistedLayer>* nonAtlased,
+                                 SkTDArray<GrHoistedLayer>* recycled) {
     const SkPicture* pict = info.fPicture ? info.fPicture : topLevelPicture;
 
     GrCachedLayer* layer = layerCache->findLayerOrCreate(pict->uniqueID(),
                                                          info.fSaveLayerOpID,
                                                          info.fRestoreOpID,
                                                          info.fOriginXform,
                                                          info.fPaint);
 
     GrTextureDesc desc;
     desc.fFlags = kRenderTarget_GrTextureFlagBit;
@@ skipping 72 matching lines @@
                                             SkIntToScalar(info.fSize.fWidth),
                                             SkIntToScalar(info.fSize.fHeight));
 
         if (!SkRect::Intersects(query, layerRect)) {
             continue;
         }
 
         // TODO: ignore perspective projected layers here!
         // TODO: once this code is more stable unsuitable layers can
         // just be omitted during the optimization stage
-        if (!info.fValid || info.fIsNested) {
+        if (info.fIsNested) {
             continue;
         }
 
         prepare_for_hoisting(layerCache, topLevelPicture, info, atlased, nonAtlased, recycled);
         anyHoisted = true;
     }
 
     return anyHoisted;
 }
 
@@ skipping 168 matching lines @@
     }
 
 #if DISABLE_CACHING
     // This code completely clears out the atlas. It is required when
     // caching is disabled so the atlas doesn't fill up and force more
     // free floating layers
     layerCache->purgeAll();
 #endif
 }