Bug 1296021 - Forward DeallocateLayerTreeId to GPU process if there is one. r=dvander

MozReview-Commit-ID: 12JtwGqLyy4

--HG--
extra : rebase_source : d4382aed4c0ce85ae1aa263cf978690d04cfb5dd

gfx/ipc/GPUParent.cpp

@@ -144,6 +144,13 @@ GPUParent::RecvNewContentVRManager(Endpoint<PVRManagerParent>&& aEndpoint)
   return VRManagerParent::CreateForContent(Move(aEndpoint));
 }
 
+bool
+GPUParent::RecvDeallocateLayerTreeId(const uint64_t& aLayersId)
+{
+  CompositorBridgeParent::DeallocateLayerTreeId(aLayersId);
+  return true;
+}
+
 void
 GPUParent::ActorDestroy(ActorDestroyReason aWhy)
 {

gfx/ipc/GPUParent.h

@@ -40,6 +40,7 @@ public:
   bool RecvNewContentCompositorBridge(Endpoint<PCompositorBridgeParent>&& aEndpoint) override;
   bool RecvNewContentImageBridge(Endpoint<PImageBridgeParent>&& aEndpoint) override;
   bool RecvNewContentVRManager(Endpoint<PVRManagerParent>&& aEndpoint) override;
+  bool RecvDeallocateLayerTreeId(const uint64_t& aLayersId) override;
 
   void ActorDestroy(ActorDestroyReason aWhy) override;
 

gfx/ipc/GPUProcessManager.cpp

@@ -504,6 +504,10 @@ GPUProcessManager::AllocateLayerTreeId()
 void
 GPUProcessManager::DeallocateLayerTreeId(uint64_t aLayersId)
 {
+  if (mGPUChild) {
+    mGPUChild->SendDeallocateLayerTreeId(aLayersId);
+    return;
+  }
   CompositorBridgeParent::DeallocateLayerTreeId(aLayersId);
 }
 

gfx/ipc/PGPU.ipdl

@@ -53,6 +53,8 @@ parent:
   async NewContentCompositorBridge(Endpoint<PCompositorBridgeParent> endpoint);
   async NewContentImageBridge(Endpoint<PImageBridgeParent> endpoint);
   async NewContentVRManager(Endpoint<PVRManagerParent> endpoint);
+
+  async DeallocateLayerTreeId(uint64_t layersId);
 };
 
 } // namespace gfx

gfx/layers/ipc/CompositorBridgeParent.h

@@ -48,6 +48,7 @@ class CancelableRunnable;
 namespace gfx {
 class DrawTarget;
 class GPUProcessManager;
+class GPUParent;
 } // namespace gfx
 
 namespace ipc {
@@ -210,6 +211,7 @@ class CompositorBridgeParent final : public PCompositorBridgeParent,
   friend class CompositorThreadHolder;
   friend class InProcessCompositorSession;
   friend class gfx::GPUProcessManager;
+  friend class gfx::GPUParent;
 
 public:
   explicit CompositorBridgeParent(CSSToLayoutDeviceScale aScale,