Call SkGraphics::Init() automatically for Google3 processes.

This is logically a partial revert of https://codereview.chromium.org/1903503002.

BUG=skia:
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Review URL: https://codereview.chromium.org/1906813002
diff --git a/src/core/SkGraphics.cpp b/src/core/SkGraphics.cpp
index 0273139..a2456d8 100644
--- a/src/core/SkGraphics.cpp
+++ b/src/core/SkGraphics.cpp
@@ -118,3 +118,8 @@
         flags = nextSemi + 1;
     } while (nextSemi);
 }
+
+// Call SkGraphics::Init() automatically for Google3 processes.
+#if defined(GOOGLE3)
+    static SkAutoGraphics autoGraphics;
+#endif