Move 'theme' parsing out of Extension class

chrome/browser/themes/browser_theme_pack_unittest.cc

Index: chrome/browser/themes/browser_theme_pack_unittest.cc
diff --git a/chrome/browser/themes/browser_theme_pack_unittest.cc b/chrome/browser/themes/browser_theme_pack_unittest.cc
index e1c6291d638c8182cbc35d35a3d563dc5e23af3f..a297bd94bf376b53ed30c7697bd3cfe9fe6f94d3 100644
--- a/chrome/browser/themes/browser_theme_pack_unittest.cc
+++ b/chrome/browser/themes/browser_theme_pack_unittest.cc
@@ -13,6 +13,9 @@
 #include "base/values.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/common/chrome_paths.h"
+#include "chrome/common/extensions/api/themes/theme_handler.h"
+#include "chrome/common/extensions/extension_manifest_constants.h"
+#include "chrome/common/extensions/manifest_handler.h"
 #include "content/public/test/test_browser_thread.h"
 #include "grit/theme_resources.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -30,6 +33,13 @@ class BrowserThemePackTest : public ::testing::Test {
         theme_pack_(new BrowserThemePack) {
   }
 
+  virtual void SetUp() OVERRIDE {
+    testing::Test::SetUp();
+    extensions::ManifestHandler::Register(
+        extension_manifest_keys::kTheme,
+        make_linked_ptr(new extensions::ThemeHandler));
+  }
+
   // Transformation for link underline colors.
   SkColor BuildThirdOpacity(SkColor color_link) {
     return SkColorSetA(color_link, SkColorGetA(color_link) / 3);