Disable animation for buttons on hover (r88176 and r88149).

views/controls/button/native_button.cc

Index: views/controls/button/native_button.cc
diff --git a/views/controls/button/native_button.cc b/views/controls/button/native_button.cc
index 7686b0a11e4988e89e5dc2497f3301ea8329dcd1..5c55347aaf433326c32fe630eddd286c8e384708 100644
--- a/views/controls/button/native_button.cc
+++ b/views/controls/button/native_button.cc
@@ -248,6 +248,7 @@ NativeButton::NativeButton(ButtonListener* listener, const std::wstring& label)
     : TextButton(listener, label), is_default_(false) {
   set_alignment(TextButton::ALIGN_CENTER);
   static_cast<TextButtonBorder*>(border())->copy_normal_set_to_hot_set();
+  set_animate_on_state_change(false);
   set_focusable(true);
 }