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/bench/RecordingBench.cpp b/bench/RecordingBench.cpp
index 45a9128..32354d6 100644
--- a/bench/RecordingBench.cpp
+++ b/bench/RecordingBench.cpp
@@ -5,11 +5,11 @@
  * found in the LICENSE file.
  */
 
-#include "RecordingBench.h"
-#include "SkBBHFactory.h"
-#include "SkLiteDL.h"
-#include "SkLiteRecorder.h"
-#include "SkPictureRecorder.h"
+#include "bench/RecordingBench.h"
+#include "include/core/SkBBHFactory.h"
+#include "include/core/SkPictureRecorder.h"
+#include "src/core/SkLiteDL.h"
+#include "src/core/SkLiteRecorder.h"
 
 PictureCentricBench::PictureCentricBench(const char* name, const SkPicture* pic) : fName(name) {
     // Flatten the source picture in case it's trivially nested (useless for timing).
@@ -67,7 +67,7 @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
-#include "SkSerialProcs.h"
+#include "include/core/SkSerialProcs.h"
 
 DeserializePictureBench::DeserializePictureBench(const char* name, sk_sp<SkData> data)
     : fName(name)