Fix "Swapchain is suboptimal" typo

Change-Id: I89b964d1223683cf42a37eacbd40073e47e54631
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2627893
Auto-Submit: Klaus Weidner <klausw@chromium.org>
Commit-Queue: Peng Huang <penghuang@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843178}

gpu/vulkan/vulkan_swap_chain.cc

@@ -412,7 +412,7 @@ bool VulkanSwapChain::PresentBuffer(const gfx::Rect& rect) {
     return false;
   }
 
-  LOG_IF(ERROR, result == VK_SUBOPTIMAL_KHR) << "Swapchian is suboptimal.";
+  LOG_IF(ERROR, result == VK_SUBOPTIMAL_KHR) << "Swapchain is suboptimal.";
   acquired_image_.reset();
 
   return true;