Reland "Make GPU cache invalidation SkMessageBus messages go to one GrContext."

This is a reland of f4c5bb9aba485aa47c27b15905d81992b7cf4707

Original change's description:
> Make GPU cache invalidation SkMessageBus messages go to one GrContext.
> 
> Makes it so the template param to SkMessageBus must implement:
> bool shouldSend(uint32_t inboxID) const
> 
> Updates all GPU backend message types to only go to the GrContext that
> is adding a cache entry.
> 
> Bug: skia:
> Change-Id: I3e8a4eb90654b7b8ac57cac9fb508c0ef1d51058
> Reviewed-on: https://skia-review.googlesource.com/140220
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Reviewed-by: Jim Van Verth <jvanverth@google.com>

Bug: skia:
Change-Id: I8402bfe3ed0170c99936d47050458817030b473b
Reviewed-on: https://skia-review.googlesource.com/140801
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/src/gpu/GrOnFlushResourceProvider.h b/src/gpu/GrOnFlushResourceProvider.h
index d01f1342ea..c30ec61daa 100644
--- a/src/gpu/GrOnFlushResourceProvider.h
+++ b/src/gpu/GrOnFlushResourceProvider.h
@@ -8,7 +8,6 @@
 #ifndef GrOnFlushResourceProvider_DEFINED
 #define GrOnFlushResourceProvider_DEFINED
 
-#include "GrTypes.h"
 #include "GrDeferredUpload.h"
 #include "GrOpFlushState.h"
 #include "GrResourceProvider.h"
@@ -21,7 +20,6 @@ class GrOnFlushResourceProvider;
 class GrRenderTargetOpList;
 class GrRenderTargetContext;
 class GrSurfaceProxy;
-
 class SkColorSpace;
 class SkSurfaceProps;
 
@@ -31,7 +29,7 @@ class SkSurfaceProps;
  */
 class GrOnFlushCallbackObject {
 public:
-    virtual ~GrOnFlushCallbackObject() { }
+    virtual ~GrOnFlushCallbackObject() {}
 
     /*
      * The onFlush callback allows subsystems (e.g., text, path renderers) to create atlases
@@ -91,6 +89,7 @@ public:
     sk_sp<const GrBuffer> findOrMakeStaticBuffer(GrBufferType, size_t, const void* data,
                                                  const GrUniqueKey&);
 
+    uint32_t contextUniqueID() const;
     const GrCaps* caps() const;
 
 private: