rewrite includes to not need so much -Ifoo

Current strategy: everything from the top

Things to look at first are the manual changes:

   - added tools/rewrite_includes.py
   - removed -Idirectives from BUILD.gn
   - various compile.sh simplifications
   - tweak tools/embed_resources.py
   - update gn/find_headers.py to write paths from the top
   - update gn/gn_to_bp.py SkUserConfig.h layout
     so that #include "include/config/SkUserConfig.h" always
     gets the header we want.

No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <[email protected]>
Reviewed-by: Hal Canary <[email protected]>
Reviewed-by: Brian Osman <[email protected]>
Reviewed-by: Florin Malita <[email protected]>
diff --git a/docs/examples/Surface_MakeRasterDirectReleaseProc.cpp b/docs/examples/Surface_MakeRasterDirectReleaseProc.cpp
index d6f5223..6d4c2bc 100644
--- a/docs/examples/Surface_MakeRasterDirectReleaseProc.cpp
+++ b/docs/examples/Surface_MakeRasterDirectReleaseProc.cpp
@@ -1,6 +1,6 @@
 // Copyright 2019 Google LLC.
 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
-#include "fiddle/examples.h"
+#include "tools/fiddle/examples.h"
 // HASH=8e6530b26ab4096a9a91cfaadda1c568
 REG_FIDDLE(Surface_MakeRasterDirectReleaseProc, 256, 256, true, 0) {
 static void release_direct_surface_storage(void* pixels, void* context) {