Add guards to GrTextureProvider

include/gpu/GrTextureProvider.h

Index: include/gpu/GrTextureProvider.h
diff --git a/include/gpu/GrTextureProvider.h b/include/gpu/GrTextureProvider.h
index 5635583d80fef393a746ae75f32edc0d2a3c8025..b46acff4b1906f3c789bf9a23e5ba6a1b8cd1236 100644
--- a/include/gpu/GrTextureProvider.h
+++ b/include/gpu/GrTextureProvider.h
@@ -11,6 +11,8 @@
 #include "GrTexture.h"
 #include "SkImageFilter.h"
 
+class GrSingleOwner;
+
 class SK_API GrTextureProvider {
 public:
     ///////////////////////////////////////////////////////////////////////////
@@ -134,7 +136,10 @@ public:
      GrRenderTarget* wrapBackendRenderTarget(const GrBackendRenderTargetDesc& desc);
 
 protected:
-    GrTextureProvider(GrGpu* gpu, GrResourceCache* cache) : fCache(cache), fGpu(gpu) {}
+    GrTextureProvider(GrGpu* gpu, GrResourceCache* cache, GrSingleOwner* singleOwner)
+        : fCache(cache)
+        , fGpu(gpu)
+        , fSingleOwner(singleOwner) {}
 
     /**
      * Assigns a unique key to a resource. If the key is associated with another resource that
@@ -186,6 +191,7 @@ protected:
 private:
     GrResourceCache* fCache;
     GrGpu* fGpu;

[robertphillips, 2016/01/07 19:07:02]

// Guard for single-threaded access. Owned by GrContext.

?

+    GrSingleOwner* fSingleOwner;
 };
 
 #endif