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/GrGpu.h b/src/gpu/GrGpu.h
index 3e58908..a64a74e 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -8,18 +8,18 @@
 #ifndef GrGpu_DEFINED
 #define GrGpu_DEFINED
 
-#include "GrCaps.h"
-#include "GrGpuCommandBuffer.h"
-#include "GrProgramDesc.h"
-#include "GrSamplePatternDictionary.h"
-#include "GrSwizzle.h"
-#include "GrAllocator.h"
-#include "GrTextureProducer.h"
-#include "GrTypes.h"
-#include "GrXferProcessor.h"
-#include "SkPath.h"
-#include "SkSurface.h"
-#include "SkTArray.h"
+#include "include/core/SkPath.h"
+#include "include/core/SkSurface.h"
+#include "include/gpu/GrTypes.h"
+#include "include/private/SkTArray.h"
+#include "src/gpu/GrAllocator.h"
+#include "src/gpu/GrCaps.h"
+#include "src/gpu/GrGpuCommandBuffer.h"
+#include "src/gpu/GrProgramDesc.h"
+#include "src/gpu/GrSamplePatternDictionary.h"
+#include "src/gpu/GrSwizzle.h"
+#include "src/gpu/GrTextureProducer.h"
+#include "src/gpu/GrXferProcessor.h"
 #include <map>
 
 class GrBackendRenderTarget;