Refactor to separate backend object lifecycle and GpuResource budget decision

src/gpu/gl/GrGLTextureRenderTarget.cpp

Index: src/gpu/gl/GrGLTextureRenderTarget.cpp
diff --git a/src/gpu/gl/GrGLTextureRenderTarget.cpp b/src/gpu/gl/GrGLTextureRenderTarget.cpp
index b6068a4e56efc5b250872df3ed7931251357d034..1fa0a21c41c84ba50f81e8187dec2697014493e9 100644
--- a/src/gpu/gl/GrGLTextureRenderTarget.cpp
+++ b/src/gpu/gl/GrGLTextureRenderTarget.cpp
@@ -37,3 +37,16 @@ void GrGLTextureRenderTarget::dumpMemoryStatistics(
   traceMemoryDump->setMemoryBacking(dumpName.c_str(), "gl_texture",
                                     texture_id.c_str());
 }
+
+bool GrGLTextureRenderTarget::canAttemptStencilAttachment() const {

[Kimmo Kinnunen, 2016/04/22 08:28:42]

this changed.

+    // The RT FBO of GrGLTextureRenderTarget is never created from a
+    // wrapped FBO.
+    return true;
+}
+
+GrGLTextureRenderTarget* GrGLTextureRenderTarget::CreateWrapped(GrGLGpu* gpu,
+                                                                const GrSurfaceDesc& desc,
+                                                                const GrGLTexture::IDDesc& texIDDesc,
+                                                                const GrGLRenderTarget::IDDesc& rtIDDesc) {
+    return new GrGLTextureRenderTarget(gpu, desc, texIDDesc, rtIDDesc);
+}