Introduce WebTaskRunner Patch 3/5

Source/platform/fonts/mac/FontCacheMac.mm

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 21 matching lines @@
 
 #import <AppKit/AppKit.h>
 #include "platform/LayoutTestSupport.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/fonts/FontDescription.h"
 #include "platform/fonts/FontFaceCreationParams.h"
 #include  "platform/fonts/FontPlatformData.h"
 #include "platform/fonts/SimpleFontData.h"
 #include "platform/fonts/mac/FontFamilyMatcherMac.h"
 #include "public/platform/Platform.h"
+#include "public/platform/WebTaskRunner.h"
 #include "public/platform/WebTraceLocation.h"
 #include <wtf/Functional.h>
 #include <wtf/MainThread.h>
 #include <wtf/StdLibExtras.h>
 
 // Forward declare Mac SPIs.
 // Request for public API: rdar://13803570
 @interface NSFont (WebKitSPI)
 + (NSFont*)findFontLike:(NSFont*)font forString:(NSString*)string withRange:(NSRange)range inLanguage:(id)useNil;
 + (NSFont*)findFontLike:(NSFont*)font forCharacter:(UniChar)uc inLanguage:(id)useNil;
 @end
 
 namespace blink {
 
 static void invalidateFontCache()
 {
     if (!isMainThread()) {
-        Platform::current()->mainThread()->postTask(FROM_HERE, bind(&invalidateFontCache));
+        Platform::current()->mainThread()->taskRunner()->postTask(FROM_HERE, bind(&invalidateFontCache));
         return;
     }
     FontCache::fontCache()->invalidate();
 }
 
 static void fontCacheRegisteredFontsChangedNotificationCallback(CFNotificationCenterRef, void* observer, CFStringRef name, const void *, CFDictionaryRef)
 {
     ASSERT_UNUSED(observer, observer == FontCache::fontCache());
     ASSERT_UNUSED(name, CFEqual(name, kCTFontManagerRegisteredFontsChangedNotification));
     invalidateFontCache();
@@ skipping 139 matching lines @@
     // When loading fails, we do not want to use the returned FontPlatformData since it will not have
     // a valid SkTypeface.
     OwnPtr<FontPlatformData> platformData = adoptPtr(new FontPlatformData(platformFont, size, syntheticBold, syntheticItalic, fontDescription.orientation()));
     if (!platformData->typeface()) {
         return nullptr;
     }
     return platformData.leakPtr();
 }
 
 } // namespace blink