Update SkFCI::SetGlobal to smart pointers.

This updates SkFontConfigInterface::SetGlobal calls to use the smart
pointer version. This removes the awkward trailing ->unref and will
allow Skia to remove the old non-smart version of this method.

Change-Id: Icf67a1976820f5f0f07243ab1539e90e18db2ef4
Reviewed-on: https://chromium-review.googlesource.com/1058019
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Ben Wagner <bungeman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558712}

content/app/content_main_runner_impl.cc

@@ -396,7 +396,7 @@ void PreSandboxInit() {
   InitializeWebRtcModule();
 #endif
 
-  SkFontConfigInterface::SetGlobal(new FontConfigIPC(GetSandboxFD()))->unref();
+  SkFontConfigInterface::SetGlobal(sk_make_sp<FontConfigIPC>(GetSandboxFD()));
 
   // Set the android SkFontMgr for blink. We need to ensure this is done
   // before the sandbox is initialized to allow the font manager to access

content/gpu/gpu_main.cc

@@ -343,8 +343,7 @@ int GpuMain(const MainFunctionParams& parameters) {
     SkGraphics::Init();
 #if defined(OS_LINUX)
     // Set up the font IPC so that the GPU process can create typefaces.
-    SkFontConfigInterface::SetGlobal(new FontConfigIPC(GetSandboxFD()))
-        ->unref();
+    SkFontConfigInterface::SetGlobal(sk_make_sp<FontConfigIPC>(GetSandboxFD()));
 #endif
   }
 

content/renderer/renderer_main.cc

@@ -132,8 +132,7 @@ int RendererMain(const MainFunctionParams& parameters) {
   // This call could already have been made from zygote_main_linux.cc. However
   // we need to do it here if Zygote is disabled.
   if (process_command_line.HasSwitch(switches::kNoZygote)) {
-    SkFontConfigInterface::SetGlobal(new FontConfigIPC(GetSandboxFD()))
-        ->unref();
+    SkFontConfigInterface::SetGlobal(sk_make_sp<FontConfigIPC>(GetSandboxFD()));
   }
 #endif
 

ui/views/mus/aura_init.cc

@@ -114,7 +114,7 @@ bool AuraInit::Init(service_manager::Connector* connector,
 // Initialize the skia font code to go ask fontconfig underneath.
 #if defined(OS_LINUX)
   font_loader_ = sk_make_sp<font_service::FontLoader>(connector);
-  SkFontConfigInterface::SetGlobal(font_loader_.get());
+  SkFontConfigInterface::SetGlobal(font_loader_);
 
   // Initialize static default font, by running this now, before any other apps
   // load, we ensure all the state is set up.