Thread ui transform animations

content/browser/web_contents/web_contents_view_aura_browsertest.cc

Index: content/browser/web_contents/web_contents_view_aura_browsertest.cc
diff --git a/content/browser/web_contents/web_contents_view_aura_browsertest.cc b/content/browser/web_contents/web_contents_view_aura_browsertest.cc
index d76480b53894d1fc72cb08b85db84beaa17fc3bf..476bec6df0e2373bf9b5b56bf6ff16295b4b04cc 100644
--- a/content/browser/web_contents/web_contents_view_aura_browsertest.cc
+++ b/content/browser/web_contents/web_contents_view_aura_browsertest.cc
@@ -23,6 +23,7 @@
 #include "ui/aura/root_window.h"
 #include "ui/aura/test/event_generator.h"
 #include "ui/aura/window.h"
+#include "ui/compositor/scoped_animation_duration_scale_mode.h"
 
 namespace content {
 
@@ -220,6 +221,11 @@ IN_PROC_BROWSER_TEST_F(WebContentsViewAuraTest,
   RenderViewHostImpl* view_host = static_cast<RenderViewHostImpl*>(
       web_contents->GetRenderViewHost());
 
+  // This test triggers a large number of animations. Speed them up to ensure
+  // the test completes within its time limit.
+  ui::ScopedAnimationDurationScaleMode fast_duration_mode(
+      ui::ScopedAnimationDurationScaleMode::FAST_DURATION);
+
   // Make sure the page has both back/forward history.
   ExecuteSyncJSFunction(view_host, "navigate_next()");
   EXPECT_EQ(1, GetCurrentIndex());