Add error messages for canvas creation failures

components/test_runner/pixel_dump.cc

Index: components/test_runner/pixel_dump.cc
diff --git a/components/test_runner/pixel_dump.cc b/components/test_runner/pixel_dump.cc
index 5bebb1ecbba57898dafac658a242e2dbdfc5e53d..fc859d782c521dfe0b3f6e5ad5301692ce8874ad 100644
--- a/components/test_runner/pixel_dump.cc
+++ b/components/test_runner/pixel_dump.cc
@@ -98,6 +98,8 @@ void CapturePixelsForPrinting(std::unique_ptr<PixelsDumpRequest> dump_request) {
   sk_sp<SkCanvas> canvas(skia::TryCreateBitmapCanvas(
       page_size_in_pixels.width, totalHeight, is_opaque));
   if (!canvas) {
+    LOG(ERROR) << "Failed to create canvas width="
+               << page_size_in_pixels.width << " height=" << totalHeight;
     dump_request->callback.Run(SkBitmap());
     return;
   }