Removes AshTestBase::SupportsHostWindowResize

ash/test/ash_test_base.h

Index: ash/test/ash_test_base.h
diff --git a/ash/test/ash_test_base.h b/ash/test/ash_test_base.h
index 8e11877c3363689b984cff198d7c860053a0e68f..01e05f22a0d3df8de4e5472398e5361fecf1cc81 100644
--- a/ash/test/ash_test_base.h
+++ b/ash/test/ash_test_base.h
@@ -131,9 +131,6 @@ class AshTestBase : public testing::Test {
   // Proxy to AshTestHelper::SupportsMultipleDisplays().
   static bool SupportsMultipleDisplays();
 
-  // Proxy to AshTestHelper::SupportsHostWindowResize().
-  static bool SupportsHostWindowResize();
-
   void set_start_session(bool start_session) { start_session_ = start_session; }
 
   // Sets material mode for the test. This will override material mode set via