[Android] Keep -O2 gfx optimizations

ui/gfx/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/ui.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
@@ skipping 272 matching lines @@
       sources -= [ "screen_android.cc" ]
     } else {
       sources -= [ "path.cc" ]
     }
 
     # TODO(GYP) re-enable when base_java exists.
     #if (!is_android_webview_build) {
     #  deps += [ "//base:base_java" ]
     #}
 
-    # TODO(jdduke): Revisit optimization after gauging benefit, crbug/419051.
     if (!is_debug) {
       configs -= [ "//build/config/compiler:optimize" ]
       configs += [ "//build/config/compiler:optimize_max" ]
     }
 
     deps += [ ":gfx_jni_headers" ]
     libs = [
       "android",
       "jnigraphics",
     ]
@@ skipping 259 matching lines @@
 if (is_android) {
   generate_jni("gfx_jni_headers") {
     sources = [
       "../android/java/src/org/chromium/ui/gfx/BitmapHelper.java",
       "../android/java/src/org/chromium/ui/gfx/DeviceDisplayInfo.java",
       "../android/java/src/org/chromium/ui/gfx/ViewConfigurationHelper.java",
     ]
     jni_package = "gfx"
   }
 }