Move atlas creation to internal to GrResourceProvider

src/gpu/GrResourceProvider.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrResourceProvider.h"
 
 #include "GrGpu.h"
@@ skipping 124 matching lines @@
         } else {
             scratchFlags = GrResourceCache::kPreferNoPendingIO_ScratchFlag;
         }
         GrGpuResource* resource = this->cache()->findAndRefScratchResource(key, scratchFlags);
         if (resource) {
             return static_cast<GrVertexBuffer*>(resource);
         }
     }
     return this->gpu()->createVertexBuffer(size, dynamic);
 }
+
+GrBatchAtlas* GrResourceProvider::createAtlas(GrPixelConfig config,
+                                              int width, int height,
+                                              int numPlotsX, int numPlotsY,
+                                              GrBatchAtlas::EvictionFunc func, void* data) {
+    GrSurfaceDesc desc;
+    desc.fFlags = kNone_GrSurfaceFlags;
+    desc.fWidth = width;
+    desc.fHeight = height;
+    desc.fConfig = config;
+
+    // We don't want to flush the context so we claim we're in the middle of flushing so as to
+    // guarantee we do not recieve a texture with pending IO
+    // TODO: Determine how to avoid having to do this. (http://skbug.com/4156)
+    static const uint32_t kFlags = GrResourceProvider::kNoPendingIO_Flag;
+    GrTexture* texture = this->createApproxTexture(desc, kFlags);
+    if (!texture) {
+        return NULL;
+    }
+    return SkNEW_ARGS(GrBatchAtlas, (texture, numPlotsX, numPlotsY));
+}