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 <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
diff --git a/src/codec/SkJpegCodec.cpp b/src/codec/SkJpegCodec.cpp
index ca3ac3b..c8adb5c 100644
--- a/src/codec/SkJpegCodec.cpp
+++ b/src/codec/SkJpegCodec.cpp
@@ -5,21 +5,21 @@
  * found in the LICENSE file.
  */
 
-#include "SkJpegCodec.h"
+#include "src/codec/SkJpegCodec.h"
 
-#include "SkCodec.h"
-#include "SkCodecPriv.h"
-#include "SkColorData.h"
-#include "SkJpegDecoderMgr.h"
-#include "SkJpegInfo.h"
-#include "SkStream.h"
-#include "SkTemplates.h"
-#include "SkTo.h"
-#include "SkTypes.h"
+#include "include/codec/SkCodec.h"
+#include "include/core/SkStream.h"
+#include "include/core/SkTypes.h"
+#include "include/private/SkColorData.h"
+#include "include/private/SkTemplates.h"
+#include "include/private/SkTo.h"
+#include "src/codec/SkCodecPriv.h"
+#include "src/codec/SkJpegDecoderMgr.h"
+#include "src/pdf/SkJpegInfo.h"
 
 // stdio is needed for libjpeg-turbo
 #include <stdio.h>
-#include "SkJpegUtility.h"
+#include "src/codec/SkJpegUtility.h"
 
 // This warning triggers false postives way too often in here.
 #if defined(__GNUC__) && !defined(__clang__)