Temporarily remove DCHECK that triggers during hardware teardown.

android_webview/browser/browser_view_renderer.cc

Index: android_webview/browser/browser_view_renderer.cc
diff --git a/android_webview/browser/browser_view_renderer.cc b/android_webview/browser/browser_view_renderer.cc
index 1ccfc112761befe5d4b0d6593de4c43aa8bbb089..32435bf68c882896d4edfdc4652f99f39fd3b1a5 100644
--- a/android_webview/browser/browser_view_renderer.cc
+++ b/android_webview/browser/browser_view_renderer.cc
@@ -379,8 +379,8 @@ void BrowserViewRenderer::OnAttachedToWindow(int width, int height) {
 
 void BrowserViewRenderer::OnDetachedFromWindow() {
   TRACE_EVENT0("android_webview", "BrowserViewRenderer::OnDetachedFromWindow");
-  shared_renderer_state_.ReleaseHardwareDrawIfNeededOnUI();
   attached_to_window_ = false;
+  shared_renderer_state_.ReleaseHardwareDrawIfNeededOnUI();
   DCHECK(!hardware_enabled_);
 }
 
@@ -399,7 +399,7 @@ void BrowserViewRenderer::ReleaseHardware() {
 
 bool BrowserViewRenderer::IsVisible() const {
   // Ignore |window_visible_| if |attached_to_window_| is false.
-  return view_visible_ && (!attached_to_window_ || window_visible_);
+  return view_visible_ && attached_to_window_ && window_visible_;
 }
 
 gfx::Rect BrowserViewRenderer::GetScreenRect() const {