Use low resolution wallpaper for small screens.

ash/desktop_background/desktop_background_resources.cc

Index: ash/desktop_background/desktop_background_resources.cc
diff --git a/ash/desktop_background/desktop_background_resources.cc b/ash/desktop_background/desktop_background_resources.cc
index 01f7f463d2e4097cdf9a48f39134b87bd769b438..48a6dcf2c08edbc66b3aec163025a51b6584ab4c 100644
--- a/ash/desktop_background/desktop_background_resources.cc
+++ b/ash/desktop_background/desktop_background_resources.cc
@@ -23,210 +23,384 @@ const char* kWallpaperLayoutArrays[] = {
 const ash::WallpaperInfo kDefaultWallpapers[] = {
 #if !defined(GOOGLE_CHROME_BUILD)
     {
-        IDR_AURA_WALLPAPERS_ROMAINGUY_0,
+        {
+            IDR_AURA_WALLPAPERS_ROMAINGUY_0_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_ROMAINGUY_0_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_ROMAINGUY_0_THUMB,
-        ash::CENTER_CROPPED,
         "Romain Guy",
         "http://www.curious-creature.org"
     },
 #else
     {
-        IDR_AURA_WALLPAPERS_1_NATURE0,
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE0_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE0_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_1_NATURE0_THUMB,
-        ash::CENTER_CROPPED,
         "Kathy Collins / Getty Images",
         "http://www.gettyimages.com"
     },
     {
-        IDR_AURA_WALLPAPERS_1_NATURE1,
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE1_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE1_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_1_NATURE1_THUMB,
-        ash::CENTER_CROPPED,
         "Johannes van Donge",
         "http://www.diginature.nl"
     },
     {
-        IDR_AURA_WALLPAPERS_1_NATURE2,
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE2_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE2_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_1_NATURE2_THUMB,
-        ash::CENTER_CROPPED,
         "Oleg Zhukov",
         "http://500px.com/eosboy"
     },
     {
-        IDR_AURA_WALLPAPERS_1_NATURE3,
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE3_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE3_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_1_NATURE3_THUMB,
-        ash::CENTER_CROPPED,
         "Stefano Ronchi",
         "http://www.stefanoronchi.com"
     },
     {
-        IDR_AURA_WALLPAPERS_1_NATURE4,
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE4_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE4_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_1_NATURE4_THUMB,
-        ash::CENTER_CROPPED,
         "Stefano Ronchi",
         "http://www.stefanoronchi.com"
     },
     {
-        IDR_AURA_WALLPAPERS_1_NATURE5,
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE5_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE5_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_1_NATURE5_THUMB,
-        ash::CENTER_CROPPED,
         "Mario Moreno",
         "http://www.mariomorenophotography.com"
     },
     {
-        IDR_AURA_WALLPAPERS_1_NATURE6,
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE6_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE6_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_1_NATURE6_THUMB,
-        ash::CENTER_CROPPED,
         "Walter Soestbergen",
         "http://www.waltersoestbergen.nl"
     },
     {
-        IDR_AURA_WALLPAPERS_1_NATURE7,
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE7_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_1_NATURE7_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_1_NATURE7_THUMB,
-        ash::CENTER_CROPPED,
         "Mark Bridger",
         "http://www.bridgephotography.co.uk"
     },
     {
-        IDR_AURA_WALLPAPERS_2_LANDSCAPE0,
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE0_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE0_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_2_LANDSCAPE0_THUMB,
-        ash::CENTER_CROPPED,
         "Vitali Prokopenko",
         "http://www.vitphoto.com/"
     },
     {
-        IDR_AURA_WALLPAPERS_2_LANDSCAPE1,
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE1_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE1_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_2_LANDSCAPE1_THUMB,
-        ash::CENTER_CROPPED,
         "Romain Guy",
         "http://www.curious-creature.org"
     },
     {
-        IDR_AURA_WALLPAPERS_2_LANDSCAPE2,
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE2_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE2_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_2_LANDSCAPE2_THUMB,
-        ash::CENTER_CROPPED,
         "Mark Bridger",
         "http://www.bridgephotography.co.uk"
     },
     {
-        IDR_AURA_WALLPAPERS_2_LANDSCAPE3,
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE3_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE3_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_2_LANDSCAPE3_THUMB,
-        ash::CENTER_CROPPED,
         "Mike Reyfman",
         "http://mikereyfman.com"
     },
     {
-        IDR_AURA_WALLPAPERS_2_LANDSCAPE4,
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE4_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE4_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_2_LANDSCAPE4_THUMB,
-        ash::CENTER_CROPPED,
         "Mike Reyfman",
         "http://mikereyfman.com"
     },
     {
-        IDR_AURA_WALLPAPERS_2_LANDSCAPE5,
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE5_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE5_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_2_LANDSCAPE5_THUMB,
-        ash::CENTER_CROPPED,
         "Mike Reyfman",
         "http://mikereyfman.com"
     },
     {
-        IDR_AURA_WALLPAPERS_2_LANDSCAPE6,
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE6_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE6_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_2_LANDSCAPE6_THUMB,
-        ash::CENTER_CROPPED,
         "Mike Reyfman",
         "http://mikereyfman.com"
     },
     {
-        IDR_AURA_WALLPAPERS_2_LANDSCAPE7,
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE7_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_2_LANDSCAPE7_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_2_LANDSCAPE7_THUMB,
-        ash::CENTER_CROPPED,
         "Romain Guy",
         "http://www.curious-creature.org"
     },
     {
-        IDR_AURA_WALLPAPERS_3_URBAN0,
+        {
+            IDR_AURA_WALLPAPERS_3_URBAN0_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_3_URBAN0_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_3_URBAN0_THUMB,
-        ash::CENTER_CROPPED,
         "Paulo FLOP",
         "http://500px.com/FLOP"
     },
     {
-        IDR_AURA_WALLPAPERS_3_URBAN1,
+        {
+            IDR_AURA_WALLPAPERS_3_URBAN1_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_3_URBAN1_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_3_URBAN1_THUMB,
-        ash::CENTER_CROPPED,
         "Mike Reyfman",
         "http://mikereyfman.com"
     },
     {
-        IDR_AURA_WALLPAPERS_3_URBAN2,
+        {
+            IDR_AURA_WALLPAPERS_3_URBAN2_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_3_URBAN2_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_3_URBAN2_THUMB,
-        ash::CENTER_CROPPED,
         "Neil Kremer",
         "http://lightshedimagery.smugmug.com"
     },
     {
-        IDR_AURA_WALLPAPERS_3_URBAN3,
+        {
+            IDR_AURA_WALLPAPERS_3_URBAN3_LARGE,
+            ash::CENTER_CROPPED
+        },
+        {
+            IDR_AURA_WALLPAPERS_3_URBAN3_SMALL,
+            ash::CENTER
+        },
         IDR_AURA_WALLPAPERS_3_URBAN3_THUMB,
-        ash::CENTER_CROPPED,
         "Neil Kremer",
         "http://lightshedimagery.smugmug.com"
     },
 #endif
     {
-        IDR_AURA_WALLPAPERS_5_GRADIENT0,
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT0_LARGE,
+            ash::TILE
+        },
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT0_SMALL,
+            ash::TILE
+        },
         IDR_AURA_WALLPAPERS_5_GRADIENT0_THUMB,
-        ash::TILE,
         "Chromium",
         "http://www.chromium.org"
     },
     {
-        IDR_AURA_WALLPAPERS_5_GRADIENT1,
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT1_LARGE,
+            ash::TILE
+        },
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT1_SMALL,
+            ash::TILE
+        },
         IDR_AURA_WALLPAPERS_5_GRADIENT1_THUMB,
-        ash::TILE,
         "Chromium",
         "http://www.chromium.org"
     },
     {
-        IDR_AURA_WALLPAPERS_5_GRADIENT2,
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT2_LARGE,
+            ash::TILE
+        },
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT2_SMALL,
+            ash::TILE
+        },
         IDR_AURA_WALLPAPERS_5_GRADIENT2_THUMB,
-        ash::TILE,
         "Chromium",
         "http://www.chromium.org"
     },
     {
-        IDR_AURA_WALLPAPERS_5_GRADIENT3,
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT3_LARGE,
+            ash::TILE
+        },
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT3_SMALL,
+            ash::TILE
+        },
         IDR_AURA_WALLPAPERS_5_GRADIENT3_THUMB,
-        ash::TILE,
         "Chromium",
         "http://www.chromium.org"
     },
     {
-        IDR_AURA_WALLPAPERS_5_GRADIENT4,
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT4_LARGE,
+            ash::TILE
+        },
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT4_SMALL,
+            ash::TILE
+        },
         IDR_AURA_WALLPAPERS_5_GRADIENT4_THUMB,
-        ash::TILE,
         "Chromium",
         "http://www.chromium.org"
     },
     {
-        IDR_AURA_WALLPAPERS_5_GRADIENT5,
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT5_LARGE,
+            ash::TILE
+        },
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT5_SMALL,
+            ash::TILE
+        },
         IDR_AURA_WALLPAPERS_5_GRADIENT5_THUMB,
-        ash::TILE,
         "Chromium",
         "http://www.chromium.org"
     },
     {
-        IDR_AURA_WALLPAPERS_5_GRADIENT6,
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT6_LARGE,
+            ash::TILE
+        },
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT6_SMALL,
+            ash::TILE
+        },
         IDR_AURA_WALLPAPERS_5_GRADIENT6_THUMB,
-        ash::TILE,
         "Chromium",
         "http://www.chromium.org"
     },
     {
-        IDR_AURA_WALLPAPERS_5_GRADIENT7,
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT7_LARGE,
+            ash::TILE
+        },
+        {
+            IDR_AURA_WALLPAPERS_5_GRADIENT7_SMALL,
+            ash::TILE
+        },
         IDR_AURA_WALLPAPERS_5_GRADIENT7_THUMB,
-        ash::TILE,
         "Chromium",
         "http://www.chromium.org"
-    },
+    }
 };
 
 const int kWallpaperLayoutCount = arraysize(kWallpaperLayoutArrays);
@@ -294,4 +468,12 @@ const WallpaperInfo& GetWallpaperInfo(int index) {
   return kDefaultWallpapers[index];
 }
 
+const WallpaperViewInfo& GetWallpaperViewInfo(int index,
+                                              WallpaperResolution resolution) {
+  if (resolution == SMALL)
+    return kDefaultWallpapers[index].small;
+  else
+    return kDefaultWallpapers[index].large;
+}
+
 }  // namespace ash