Revert "Add support for semaphores to be inserted on GrContext flush"

This reverts commit cd1416efbc7af6f115dbaa09dce48e075d1d96ca.

Reason for revert: speculative, to try to fix roll see gpu_tests.pixel_integration_test.PixelIntegrationTest.Pixel_GpuRasterization_ConcavePaths

Original change's description:
> Add support for semaphores to be inserted on GrContext flush
> 
> This also moves the logic of inserting semaphores down into GrDrawingManager
> and finishFlush on GrGpu. With it being on finishFlush, there should be no
> issues when the DrawingManager starts respecting the proxy passed in assuming
> it always calls finishFlush at the end (which it should).
> 
> Bug: skia:
> Change-Id: I925c2a289dcbbb9159b9120878af1d34f21a2dc7
> Reviewed-on: https://skia-review.googlesource.com/25641
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Greg Daniel <egdaniel@google.com>

TBR=egdaniel@google.com,bsalomon@google.com,robertphillips@google.com

Change-Id: I9c5b9cf8c060193e1861dbb8f0c10fb11dfb5249
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/25980
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>

1 files changed, 2 insertions, 28 deletions

diff --git a/include/gpu/GrContext.h b/include/gpu/GrContext.h
index 46a9008b63..f48b8db710 100644
--- a/include/gpu/GrContext.h
+++ b/include/gpu/GrContext.h
@@ -17,7 +17,6 @@
 #include "../private/GrSingleOwner.h"
 
 class GrAtlasGlyphCache;
-class GrBackendSemaphore;
 struct GrContextOptions;
 class GrContextPriv;
 class GrContextThreadSafeProxy;
@@ -44,8 +43,6 @@ class SkTraceMemoryDump;
 class SkImage;
 class SkSurfaceProps;
 
-enum class GrSemaphoresSubmitted;
-
 class SK_API GrContext : public SkRefCnt {
 public:
     /**
@@ -240,35 +237,12 @@ public:
     // Misc.
 
     /**
-     * Call to ensure all drawing to the context has been issued to the underlying 3D API.
+     * Call to ensure all drawing to the context has been issued to the
+     * underlying 3D API.
      */
     void flush();
 
     /**
-     * Call to ensure all drawing to the context has been issued to the underlying 3D API. After
-     * issuing all commands, numSemaphore semaphores will be signaled by the gpu. The client passes
-     * in an array of numSemaphores GrBackendSemaphores. In general these GrBackendSemaphore's can
-     * be either initialized or not. If they are initialized, the backend uses the passed in
-     * semaphore. If it is not initialized, a new semaphore is created and the GrBackendSemaphore
-     * object is initialized with that semaphore.
-     *
-     * The client will own and be responsible for deleting the underlying semaphores that are stored
-     * and returned in initialized GrBackendSemaphore objects. The GrBackendSemaphore objects
-     * themselves can be deleted as soon as this function returns.
-     *
-     * If the backend API is OpenGL only uninitialized GrBackendSemaphores are supported.
-     * If the backend API is Vulkan either initialized or unitialized semaphores are supported.
-     * If unitialized, the semaphores which are created will be valid for use only with the VkDevice
-     * with which they were created.
-     *
-     * If this call returns GrSemaphoresSubmited::kNo, the GPU backend will not have created or
-     * added any semaphores to signal on the GPU. Thus the client should not have the GPU wait on
-     * any of the semaphores. However, any pending commands to the context will still be flushed.
-     */
-    GrSemaphoresSubmitted flushAndSignalSemaphores(int numSemaphores,
-                                                   GrBackendSemaphore signalSemaphores[]);
-
-    /**
      * An ID associated with this context, guaranteed to be unique.
      */
     uint32_t uniqueID() { return fUniqueID; }