Fix DisplayD3D not initializing mRenderer.

src/libANGLE/renderer/d3d/DisplayD3D.cpp

@@ -32,6 +32,11 @@ SurfaceImpl *DisplayD3D::createOffscreenSurface(egl::Display *display, const egl
                                        width, height, textureFormat, textureTarget);
 }
 
+DisplayD3D::DisplayD3D(rx::RendererD3D *renderer)
+    : mRenderer(renderer)
+{
+}
+
 egl::Error DisplayD3D::restoreLostDevice()
 {
     // Release surface resources to make the Reset() succeed

src/libANGLE/renderer/d3d/DisplayD3D.h

@@ -18,7 +18,7 @@ class RendererD3D;
 class DisplayD3D : public DisplayImpl
 {
   public:
-    DisplayD3D(rx::RendererD3D *renderer) {}
+    DisplayD3D(rx::RendererD3D *renderer);
     SurfaceImpl *createWindowSurface(egl::Display *display, const egl::Config *config,
                                      EGLNativeWindowType window, EGLint fixedSize,
                                      EGLint width, EGLint height, EGLint postSubBufferSupported) override;