Change DCHECK_IS_ON() to DCHECK_IS_ON

DCHECK_IS_ON has been a constant since r255987, and can be used in both
if() and #if. It no more needs to be in function form.

Converted 'if (DCHECK_IS_ON)' to '#if DCHECK_IS_ON' if proper.

BUG=350462
TEST=build
TBR=darin

Review URL: https://codereview.chromium.org/195973002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257156 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ui/gfx/font_list_impl.cc b/ui/gfx/font_list_impl.cc
index b08d395..8c00fcc 100644
--- a/ui/gfx/font_list_impl.cc
+++ b/ui/gfx/font_list_impl.cc
@@ -104,12 +104,12 @@
   DCHECK(!fonts.empty());
   font_style_ = fonts[0].GetStyle();
   font_size_ = fonts[0].GetFontSize();
-  if (DCHECK_IS_ON()) {
-    for (size_t i = 1; i < fonts.size(); ++i) {
-      DCHECK_EQ(fonts[i].GetStyle(), font_style_);
-      DCHECK_EQ(fonts[i].GetFontSize(), font_size_);
-    }
+#if DCHECK_IS_ON
+  for (size_t i = 1; i < fonts.size(); ++i) {
+    DCHECK_EQ(fonts[i].GetStyle(), font_style_);
+    DCHECK_EQ(fonts[i].GetFontSize(), font_size_);
   }
+#endif
 }
 
 FontListImpl::FontListImpl(const Font& font)