Add gfx::Screen::IsEnabled()

ui/gfx/image/image_skia.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/gfx/image/image_skia.h"
 
 #include <limits>
 #include <cmath>
 
 #include "base/logging.h"
@@ skipping 129 matching lines @@
   float smallest_diff = std::numeric_limits<float>::max();
   for (size_t i = 0; i < bitmaps.size(); ++i) {
     float diff = std::abs(bitmaps[i].width() - desired_width) +
         std::abs(bitmaps[i].height() - desired_height);
     if (diff < smallest_diff) {
       closest_index = i;
       smallest_diff = diff;
     }
   }
   if (smallest_diff < std::numeric_limits<float>::max()) {
-    *bitmap_scale_factor = bitmaps[closest_index].width() / width();
+    *bitmap_scale_factor = static_cast<float>(bitmaps[closest_index].width()) /
+        width();
     return bitmaps[closest_index];
   }
 
   return *null_bitmap;
 }
 
 bool ImageSkia::empty() const {
   return isNull() || storage_->size().IsEmpty();
 }
 
@@ skipping 37 matching lines @@
     storage_ = NULL;
     return;
   }
   storage_ = new internal::ImageSkiaStorage();
   storage_->set_size(gfx::Size(static_cast<int>(bitmap.width() / scale_factor),
       static_cast<int>(bitmap.height() / scale_factor)));
   storage_->AddBitmap(bitmap);
 }
 
 }  // namespace gfx