Bug 1276062 - show a log if there is no device for DrawTargetD2D1::Init(). r=bas

gfx/2d/DrawTargetD2D1.cpp

@@ -944,6 +944,7 @@ DrawTargetD2D1::Init(ID3D11Texture2D* aTexture, SurfaceFormat aFormat)
 
   ID2D1Device* device = Factory::GetD2D1Device();
   if (!device) {
+    gfxCriticalNote << "[D2D1.1] Failed to obtain a device for DrawTargetD2D1::Init().";
     return false;
   }
 
@@ -1008,6 +1009,7 @@ DrawTargetD2D1::Init(const IntSize &aSize, SurfaceFormat aFormat)
 
   ID2D1Device* device = Factory::GetD2D1Device();
   if (!device) {
+    gfxCriticalNote << "[D2D1.1] Failed to obtain a device for DrawTargetD2D1::Init().";
     return false;
   }