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/gpu/ops/GrStrokeRectOp.cpp b/src/gpu/ops/GrStrokeRectOp.cpp
index c7b469c..36489a5 100644
--- a/src/gpu/ops/GrStrokeRectOp.cpp
+++ b/src/gpu/ops/GrStrokeRectOp.cpp
@@ -5,21 +5,21 @@
  * found in the LICENSE file.
  */
 
-#include "GrStrokeRectOp.h"
+#include "src/gpu/ops/GrStrokeRectOp.h"
 
-#include "GrCaps.h"
-#include "GrColor.h"
-#include "GrDefaultGeoProcFactory.h"
-#include "GrDrawOpTest.h"
-#include "GrMeshDrawOp.h"
-#include "GrOpFlushState.h"
-#include "GrResourceKey.h"
-#include "GrResourceProvider.h"
-#include "GrSimpleMeshDrawOpHelper.h"
-#include "GrVertexWriter.h"
-#include "ops/GrFillRectOp.h"
-#include "SkRandom.h"
-#include "SkStrokeRec.h"
+#include "include/core/SkStrokeRec.h"
+#include "include/private/GrColor.h"
+#include "include/private/GrResourceKey.h"
+#include "include/utils/SkRandom.h"
+#include "src/gpu/GrCaps.h"
+#include "src/gpu/GrDefaultGeoProcFactory.h"
+#include "src/gpu/GrDrawOpTest.h"
+#include "src/gpu/GrOpFlushState.h"
+#include "src/gpu/GrResourceProvider.h"
+#include "src/gpu/GrVertexWriter.h"
+#include "src/gpu/ops/GrFillRectOp.h"
+#include "src/gpu/ops/GrMeshDrawOp.h"
+#include "src/gpu/ops/GrSimpleMeshDrawOpHelper.h"
 
 namespace {
 
@@ -785,7 +785,7 @@
 
 #if GR_TEST_UTILS
 
-#include "GrDrawOpTest.h"
+#include "src/gpu/GrDrawOpTest.h"
 
 GR_DRAW_OP_TEST_DEFINE(NonAAStrokeRectOp) {
     SkMatrix viewMatrix = GrTest::TestMatrix(random);