Remove all uses of skia::RefPtr and stale includes

ui/gfx/platform_font_linux.cc

Index: ui/gfx/platform_font_linux.cc
diff --git a/ui/gfx/platform_font_linux.cc b/ui/gfx/platform_font_linux.cc
index dba65947477f9f4fd96bc975bbfd79b1a4805266..105e3dccb3b84ab63bba64171a8c65ce50b586bb 100644
--- a/ui/gfx/platform_font_linux.cc
+++ b/ui/gfx/platform_font_linux.cc
@@ -41,7 +41,7 @@ base::LazyInstance<scoped_refptr<PlatformFontLinux>>::Leaky g_default_font =
 // Creates a SkTypeface for the passed-in Font::FontStyle and family. If a
 // fallback typeface is used instead of the requested family, |family| will be
 // updated to contain the fallback's family name.
-skia::RefPtr<SkTypeface> CreateSkTypeface(int style, std::string* family) {
+sk_sp<SkTypeface> CreateSkTypeface(int style, std::string* family) {
   DCHECK(family);
 
   int skia_style = SkTypeface::kNormal;
@@ -50,12 +50,12 @@ skia::RefPtr<SkTypeface> CreateSkTypeface(int style, std::string* family) {
   if (Font::ITALIC & style)
     skia_style |= SkTypeface::kItalic;
 
-  skia::RefPtr<SkTypeface> typeface = skia::AdoptRef(SkTypeface::CreateFromName(
+  sk_sp<SkTypeface> typeface(SkTypeface::CreateFromName(
       family->c_str(), static_cast<SkTypeface::Style>(skia_style)));
   if (!typeface) {
     // A non-scalable font such as .pcf is specified. Fall back to a default
     // scalable font.
-    typeface = skia::AdoptRef(SkTypeface::CreateFromName(
+    typeface = sk_sp<SkTypeface>(SkTypeface::CreateFromName(
         kFallbackFontFamilyName, static_cast<SkTypeface::Style>(skia_style)));
     CHECK(typeface) << "Could not find any font: " << family << ", "
                     << kFallbackFontFamilyName;
@@ -116,7 +116,7 @@ PlatformFontLinux::PlatformFontLinux(const std::string& font_name,
   query.families.push_back(font_name);
   query.pixel_size = font_size_pixels;
   query.style = Font::NORMAL;
-  InitFromDetails(skia::RefPtr<SkTypeface>(), font_name, font_size_pixels,
+  InitFromDetails(nullptr, font_name, font_size_pixels,
                   query.style, gfx::GetFontRenderParams(query, NULL));
 }
 
@@ -145,7 +145,7 @@ Font PlatformFontLinux::DeriveFont(int size_delta, int style) const {
 
   // If the style changed, we may need to load a new face.
   std::string new_family = font_family_;
-  skia::RefPtr<SkTypeface> typeface =
+  sk_sp<SkTypeface> typeface =
       (style == style_) ? typeface_ : CreateSkTypeface(style, &new_family);
 
   FontRenderParamsQuery query;
@@ -212,7 +212,7 @@ const FontRenderParams& PlatformFontLinux::GetFontRenderParams() {
 ////////////////////////////////////////////////////////////////////////////////
 // PlatformFontLinux, private:
 
-PlatformFontLinux::PlatformFontLinux(const skia::RefPtr<SkTypeface>& typeface,
+PlatformFontLinux::PlatformFontLinux(sk_sp<SkTypeface> typeface,
                                      const std::string& family,
                                      int size_pixels,
                                      int style,
@@ -223,7 +223,7 @@ PlatformFontLinux::PlatformFontLinux(const skia::RefPtr<SkTypeface>& typeface,
 PlatformFontLinux::~PlatformFontLinux() {}
 
 void PlatformFontLinux::InitFromDetails(
-    const skia::RefPtr<SkTypeface>& typeface,
+    sk_sp<SkTypeface> typeface,
     const std::string& font_family,
     int font_size_pixels,
     int style,