Skip TracePerfTest.Run/*_idle_heroes on Pixel 2

The test crashes both with the native and Vulkan drivers.

Bug: angleproject:5867
Change-Id: I6fe3acd7050b0cb2d6f735de684b897aca0a6bb8
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2826402
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

src/tests/perf_tests/TracePerfTest.cpp

@@ -665,6 +665,15 @@ TracePerfTest::TracePerfTest()
         }
     }
 
+    if (param.testID == RestrictedTraceID::idle_heroes)
+    {
+        // TODO: http://anglebug.com/5591 Trace crashes on Pixel 2
+        if (IsPixel2())
+        {
+            mSkipTest = true;
+        }
+    }
+
     if (param.testID == RestrictedTraceID::shadow_fight_2)
     {
         addExtensionPrerequisite("GL_OES_EGL_image_external");