Guard against MakePromiseSkImageFromRenderPass failure

SkDeferredDisplayListRecorder::makePromiseTexture can fail for a
variety reasons (in the repro case the requested width/height is
320/10048 while the max texture size is 8192) so try to fail
gracefully.

Bug: 1068253
Change-Id: I5fcb25343fe397240330e23db902c97cee71c239
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2351955Reviewed-by: Peng Huang <penghuang@chromium.org>
Commit-Queue: Robert Phillips <robertphillips@google.com>
Cr-Commit-Position: refs/heads/master@{#797280}

components/viz/service/display/skia_renderer.cc

@@ -2519,6 +2519,10 @@ void SkiaRenderer::DrawRenderPassQuad(const RenderPassDrawQuad* quad,
     }
   }
 
+  if (!content_image) {
+    return;
+  }
+
   // If the RP generated mipmaps when it was created, set quality to medium,
   // which turns on mipmap filtering in Skia.
   if (backing.generate_mipmap)

components/viz/service/display_embedder/skia_output_surface_impl.cc

@@ -598,7 +598,9 @@ sk_sp<SkImage> SkiaOutputSurfaceImpl::MakePromiseSkImageFromRenderPass(
             image_context->color_space(), Fulfill, DoNothing, DoNothing,
             image_context.get()),
         backend_format);
-    DCHECK(image_context->has_image());
+    if (!image_context->has_image()) {
+      return nullptr;
+    }
   }
   images_in_current_paint_.push_back(image_context.get());
   return image_context->image();