Allow themes to change the background of the new tab page....

chrome/common/extensions/extension.cc

Index: chrome/common/extensions/extension.cc
===================================================================
--- chrome/common/extensions/extension.cc	(revision 17403)
+++ chrome/common/extensions/extension.cc	(working copy)
@@ -34,6 +34,7 @@
 const wchar_t* Extension::kThemeImagesKey = L"images";
 const wchar_t* Extension::kThemeColorsKey = L"colors";
 const wchar_t* Extension::kThemeTintsKey = L"tints";
+const wchar_t* Extension::kThemeDisplayPropertiesKey = L"properties";
 const wchar_t* Extension::kToolstripsKey = L"toolstrips";
 const wchar_t* Extension::kTooltipKey = L"tooltip";
 const wchar_t* Extension::kTypeKey = L"type";
@@ -577,6 +578,13 @@
           static_cast<DictionaryValue*>(tints_value->DeepCopy()));
     }
 
+    DictionaryValue* display_properties_value;
+    if (theme_value->GetDictionary(kThemeDisplayPropertiesKey,
+        &display_properties_value)) {
+      theme_display_properties_.reset(
+          static_cast<DictionaryValue*>(display_properties_value->DeepCopy()));
+    }
+
     return true;
   }