Do not try to load material design paks if not on Mac OS.

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 <stdint.h>
 
 #include <limits>
 #include <utility>
@@ skipping 679 matching lines @@
   supported_scale_factors.push_back(SCALE_FACTOR_200P);
 #endif
   ui::SetSupportedScaleFactors(supported_scale_factors);
 }
 
 void ResourceBundle::FreeImages() {
   images_.clear();
 }
 
 void ResourceBundle::LoadChromeResources() {
+  // TODO(estade): remove material design specific resources.
+  // See crbug.com/613593
   // The material design data packs contain some of the same asset IDs as in
   // the non-material design data packs. Add these to the ResourceBundle
   // first so that they are searched first when a request for an asset is
   // made.
   if (MaterialDesignController::IsModeMaterial()) {

[Evan Stade, 2016/06/01 19:14:14]

hmm, is this check necessary on !osx? Can we move the ifdef outside?

[mfomitchev, 2016/06/01 21:09:45]

Good point. Done.

+#if defined(OS_MACOSX)
     if (IsScaleFactorSupported(SCALE_FACTOR_100P)) {
       AddMaterialDesignDataPackFromPath(
           GetResourcesPakFilePath("chrome_material_100_percent.pak"),
           SCALE_FACTOR_100P);
     }
 
     if (IsScaleFactorSupported(SCALE_FACTOR_200P)) {
       AddOptionalMaterialDesignDataPackFromPath(
           GetResourcesPakFilePath("chrome_material_200_percent.pak"),
           SCALE_FACTOR_200P);
     }
+#endif
   }
 
   // Always load the 1x data pack first as the 2x data pack contains both 1x and
   // 2x images. The 1x data pack only has 1x images, thus passes in an accurate
   // scale factor to gfx::ImageSkia::AddRepresentation.
   if (IsScaleFactorSupported(SCALE_FACTOR_100P)) {
     AddDataPackFromPath(GetResourcesPakFilePath(
         "chrome_100_percent.pak"), SCALE_FACTOR_100P);
   }
 
@@ skipping 170 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