Use GrGLTextureInfo for Skia texture handles.

cc/resources/resource_provider.cc

Index: cc/resources/resource_provider.cc
diff --git a/cc/resources/resource_provider.cc b/cc/resources/resource_provider.cc
index cc639230651fcaf58c0cb5581601de9123f55bfe..1506bd18ffc8bc1f991ebd1d048741d4eff29a1d 100644
--- a/cc/resources/resource_provider.cc
+++ b/cc/resources/resource_provider.cc
@@ -32,6 +32,7 @@
 #include "third_party/skia/include/core/SkSurface.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 #include "third_party/skia/include/gpu/GrTextureProvider.h"
+#include "third_party/skia/include/gpu/gl/GrGLTypes.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/vector2d.h"
 #include "ui/gl/trace_util.h"
@@ -959,13 +960,16 @@ void ResourceProvider::ScopedWriteLockGr::InitSkSurface(
     int msaa_sample_count) {
   DCHECK(resource_->locked_for_write);
 
+  GrGLTextureInfo texture_info;
+  texture_info.fID = resource_->gl_id;
+  texture_info.fTarget = resource_->target;
   GrBackendTextureDesc desc;
   desc.fFlags = kRenderTarget_GrBackendTextureFlag;
   desc.fWidth = resource_->size.width();
   desc.fHeight = resource_->size.height();
   desc.fConfig = ToGrPixelConfig(resource_->format);
   desc.fOrigin = kTopLeft_GrSurfaceOrigin;
-  desc.fTextureHandle = resource_->gl_id;
+  desc.fTextureHandle = reinterpret_cast<GrBackendObject>(&texture_info);

[Stephen White, 2015/12/16 22:13:31]

This seems fragile. If he callee copied this desc before texture_info goes out
of scope, it'd be pointing at garbage.

   desc.fSampleCnt = msaa_sample_count;
 
   bool use_worker_context = true;