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/image/SkImage_GpuBase.cpp b/src/image/SkImage_GpuBase.cpp
index 3606547..2a78ff8 100644
--- a/src/image/SkImage_GpuBase.cpp
+++ b/src/image/SkImage_GpuBase.cpp
@@ -5,22 +5,22 @@
  * found in the LICENSE file.
  */
 
-#include "SkImage_GpuBase.h"
-#include "GrBackendSurface.h"
-#include "GrClip.h"
-#include "GrContext.h"
-#include "GrContextPriv.h"
-#include "GrRecordingContext.h"
-#include "GrRecordingContextPriv.h"
-#include "GrRenderTargetContext.h"
-#include "GrTexture.h"
-#include "GrTextureAdjuster.h"
-#include "SkBitmapCache.h"
-#include "SkImage_Gpu.h"
-#include "SkPromiseImageTexture.h"
-#include "SkReadPixelsRec.h"
-#include "SkTLList.h"
-#include "effects/GrYUVtoRGBEffect.h"
+#include "include/core/SkPromiseImageTexture.h"
+#include "include/gpu/GrBackendSurface.h"
+#include "include/gpu/GrContext.h"
+#include "include/gpu/GrTexture.h"
+#include "include/private/GrRecordingContext.h"
+#include "src/core/SkBitmapCache.h"
+#include "src/core/SkTLList.h"
+#include "src/gpu/GrClip.h"
+#include "src/gpu/GrContextPriv.h"
+#include "src/gpu/GrRecordingContextPriv.h"
+#include "src/gpu/GrRenderTargetContext.h"
+#include "src/gpu/GrTextureAdjuster.h"
+#include "src/gpu/effects/GrYUVtoRGBEffect.h"
+#include "src/image/SkImage_Gpu.h"
+#include "src/image/SkImage_GpuBase.h"
+#include "src/image/SkReadPixelsRec.h"
 
 SkImage_GpuBase::SkImage_GpuBase(sk_sp<GrContext> context, int width, int height, uint32_t uniqueID,
                                  SkColorType ct, SkAlphaType at, sk_sp<SkColorSpace> cs)