Android: Don't try to access the native Screen instance when loading resources.

ui/base/resource/resource_bundle.cc

 // Copyright (c) 2012 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.
 
 #include "ui/base/resource/resource_bundle.h"
 
 #include <limits>
 #include <vector>
 
 #include "base/big_endian.h"
@@ skipping 21 matching lines @@
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/geometry/safe_integer_conversions.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/image/image_skia_source.h"
 #include "ui/gfx/screen.h"
 #include "ui/strings/grit/app_locale_settings.h"
 
 #if defined(OS_ANDROID)
 #include "ui/base/resource/resource_bundle_android.h"
+#include "ui/gfx/android/device_display_info.h"
 #endif
 
 #if defined(OS_CHROMEOS)
 #include "ui/gfx/platform_font_linux.h"
 #endif
 
 #if defined(OS_WIN)
 #include "ui/gfx/win/dpi.h"
 #endif
 
@@ skipping 549 matching lines @@
 void ResourceBundle::InitSharedInstance(Delegate* delegate) {
   DCHECK(g_shared_instance_ == NULL) << "ResourceBundle initialized twice";
   g_shared_instance_ = new ResourceBundle(delegate);
   static std::vector<ScaleFactor> supported_scale_factors;
 #if !defined(OS_IOS) && !defined(OS_WIN)
   // On platforms other than iOS, 100P is always a supported scale factor.
   // For Windows we have a separate case in this function.
   supported_scale_factors.push_back(SCALE_FACTOR_100P);
 #endif
 #if defined(OS_ANDROID)
-  const gfx::Display display =
-      gfx::Screen::GetNativeScreen()->GetPrimaryDisplay();
-  const float display_density = display.device_scale_factor();
+  float display_density;
+  if (gfx::Display::HasForceDeviceScaleFactor()) {
+    display_density = gfx::Display::GetForcedDeviceScaleFactor();
+  } else {
+    gfx::DeviceDisplayInfo device_info;
+    display_density = device_info.GetDIPScale();
+  }
   const ScaleFactor closest = FindClosestScaleFactorUnsafe(display_density);
   if (closest != SCALE_FACTOR_100P)
     supported_scale_factors.push_back(closest);
 #elif defined(OS_IOS)
     gfx::Display display = gfx::Screen::GetNativeScreen()->GetPrimaryDisplay();
   if (display.device_scale_factor() > 2.0) {
     DCHECK_EQ(3.0, display.device_scale_factor());
     supported_scale_factors.push_back(SCALE_FACTOR_300P);
   } else if (display.device_scale_factor() > 1.0) {
     DCHECK_EQ(2.0, display.device_scale_factor());
@@ skipping 289 matching lines @@
 // static
 bool ResourceBundle::DecodePNG(const unsigned char* buf,
                                size_t size,
                                SkBitmap* bitmap,
                                bool* fell_back_to_1x) {
   *fell_back_to_1x = PNGContainsFallbackMarker(buf, size);
   return gfx::PNGCodec::Decode(buf, size, bitmap);
 }
 
 }  // namespace ui