Revert of Make SkGraphics::Term a no-op, stop calling it.

src/core/SkGraphics.cpp

Index: src/core/SkGraphics.cpp
diff --git a/src/core/SkGraphics.cpp b/src/core/SkGraphics.cpp
index 5290ea1d07a9065dc27329947c2a9b32b7e31beb..e9dcadc180d279c2afcfadcf311b02e6d986eec0 100644
--- a/src/core/SkGraphics.cpp
+++ b/src/core/SkGraphics.cpp
@@ -58,6 +58,12 @@
 #endif
 }
 
+void SkGraphics::Term() {
+    PurgeFontCache();
+    PurgeResourceCache();
+    SkPaint::Term();
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkGraphics::DumpMemoryStatistics(SkTraceMemoryDump* dump) {