Fix Skia GN build on Mac

core/fxge/apple/fx_apple_platform.cpp

Index: core/fxge/apple/fx_apple_platform.cpp
diff --git a/core/fxge/apple/fx_apple_platform.cpp b/core/fxge/apple/fx_apple_platform.cpp
index 3bddf64280888d2f58f626c25ae8e6ee451515c5..c7e81d53398071a4fba7c43204d8383850d6d64d 100644
--- a/core/fxge/apple/fx_apple_platform.cpp
+++ b/core/fxge/apple/fx_apple_platform.cpp
@@ -19,6 +19,8 @@
 #include "core/fxge/include/fx_freetype.h"
 #include "core/fxge/include/fx_ge_apple.h"
 
+#ifndef _SKIA_SUPPORT_
+
 namespace {
 
 void DoNothing(void* info, const void* data, size_t size) {}
@@ -86,6 +88,7 @@ void CFX_AggDeviceDriver::InitPlatform() {
           ->m_quartz2d;
   m_pPlatformGraphics = quartz2d.createGraphics(m_pBitmap);
 }
+
 void CFX_AggDeviceDriver::DestroyPlatform() {
   CQuartz2D& quartz2d =
       static_cast<CApplePlatform*>(CFX_GEModule::Get()->GetPlatformData())
@@ -95,16 +98,6 @@ void CFX_AggDeviceDriver::DestroyPlatform() {
     m_pPlatformGraphics = nullptr;
   }
 }
-void CFX_FaceCache::InitPlatform() {}
-void CFX_FaceCache::DestroyPlatform() {}
-CFX_GlyphBitmap* CFX_FaceCache::RenderGlyph_Nativetext(
-    CFX_Font* pFont,
-    uint32_t glyph_index,
-    const CFX_Matrix* pMatrix,
-    int dest_width,
-    int anti_alias) {
-  return nullptr;
-}
 
 FX_BOOL CFX_AggDeviceDriver::DrawDeviceText(int nChars,
                                             const FXTEXT_CHARPOS* pCharPos,
@@ -166,6 +159,21 @@ FX_BOOL CFX_AggDeviceDriver::DrawDeviceText(int nChars,
   return ret;
 }
 
+#endif  // _SKIA_SUPPORT_
+
+void CFX_FaceCache::InitPlatform() {}
+
+void CFX_FaceCache::DestroyPlatform() {}
+
+CFX_GlyphBitmap* CFX_FaceCache::RenderGlyph_Nativetext(
+    CFX_Font* pFont,
+    uint32_t glyph_index,
+    const CFX_Matrix* pMatrix,
+    int dest_width,
+    int anti_alias) {
+  return nullptr;
+}
+
 void CFX_Font::ReleasePlatformResource() {
   if (m_pPlatformFont) {
     CQuartz2D& quartz2d =