Add a GrLayerCache to GrContext

include/gpu/GrContext.h

Index: include/gpu/GrContext.h
===================================================================
--- include/gpu/GrContext.h	(revision 14037)
+++ include/gpu/GrContext.h	(working copy)
@@ -28,6 +28,7 @@
 class GrIndexBuffer;
 class GrIndexBufferAllocPool;
 class GrInOrderDrawBuffer;
+class GrLayerCache;
 class GrOvalRenderer;
 class GrPath;
 class GrPathRenderer;
@@ -860,6 +861,7 @@
     GrGpu* getGpu() { return fGpu; }
     const GrGpu* getGpu() const { return fGpu; }
     GrFontCache* getFontCache() { return fFontCache; }
+    GrLayerCache* getLayerCache() { return fLayerCache.get(); }
     GrDrawTarget* getTextTarget();
     const GrIndexBuffer* getQuadIndexBuffer() const;
 
@@ -907,6 +909,7 @@
 
     GrResourceCache*                fTextureCache;
     GrFontCache*                    fFontCache;
+    SkAutoTDelete<GrLayerCache>     fLayerCache;
 
     GrPathRendererChain*            fPathRendererChain;
     GrSoftwarePathRenderer*         fSoftwarePathRenderer;