Simplify FaviconDriverImpl by removing extra FaviconHandler member.

components/favicon/core/favicon_handler_unittest.cc

Index: components/favicon/core/favicon_handler_unittest.cc
diff --git a/components/favicon/core/favicon_handler_unittest.cc b/components/favicon/core/favicon_handler_unittest.cc
index 598895bfb17133a4707dd0963ebecbd6e094f867..7f436487ad4aafb843beb7d04040f8ca4b0e44b6 100644
--- a/components/favicon/core/favicon_handler_unittest.cc
+++ b/components/favicon/core/favicon_handler_unittest.cc
@@ -306,9 +306,7 @@ class TestFaviconDriver : public FaviconDriver {
 // internals.
 class TestFaviconHandler : public FaviconHandler {
  public:
-  static int GetMaximalIconSize(favicon_base::IconType icon_type) {
-    return FaviconHandler::GetMaximalIconSize(icon_type);
-  }
+  using FaviconHandler::GetMaximalIconSize;
 
   TestFaviconHandler(const GURL& page_url,
                      TestFaviconDriver* driver,
@@ -1501,8 +1499,11 @@ TEST_F(FaviconHandlerTest, TestSelectLargestFavicon) {
 
 TEST_F(FaviconHandlerTest, TestFaviconWasScaledAfterDownload) {
   const GURL kPageURL("http://www.google.com");
-  const int kMaximalSize =
-    TestFaviconHandler::GetMaximalIconSize(favicon_base::FAVICON);
+
+  TestFaviconDriver driver1;
+  TestFaviconHandler handler1(kPageURL, &driver1, FaviconHandler::FAVICON,
+                              true);
+  const int kMaximalSize = handler1.GetMaximalIconSize(favicon_base::FAVICON);
 
   std::vector<gfx::Size> icon1;
   icon1.push_back(gfx::Size(kMaximalSize + 1, kMaximalSize + 1));
@@ -1516,9 +1517,6 @@ TEST_F(FaviconHandlerTest, TestFaviconWasScaledAfterDownload) {
       FaviconURL(
           GURL("http://www.google.com/c"), favicon_base::FAVICON, icon2)};
 
-  TestFaviconDriver driver1;
-  TestFaviconHandler handler1(kPageURL, &driver1, FaviconHandler::FAVICON,
-                              true);
   std::vector<FaviconURL> urls1(kSourceIconURLs,
                                 kSourceIconURLs + arraysize(kSourceIconURLs));
   UpdateFaviconURL(&driver1, &handler1, kPageURL, urls1);