Bug 1250418 - Remove the assertion check of mCanSend in CompositorChild::ActorDestroy, r=nical

MozReview-Commit-ID: L0VSy4cYglh

--HG--
extra : rebase_source : 28a1e3501b74a6883c5ed5855231757fee4d1415

gfx/layers/ipc/CompositorChild.cpp

@@ -415,19 +415,23 @@ CompositorChild::RecvClearCachedResources(const uint64_t& aId)
 void
 CompositorChild::ActorDestroy(ActorDestroyReason aWhy)
 {
-  MOZ_ASSERT(!mCanSend);
   MOZ_ASSERT(sCompositor == this);
 
+  if (aWhy == AbnormalShutdown) {
 #ifdef MOZ_B2G
   // Due to poor lifetime management of gralloc (and possibly shmems) we will
   // crash at some point in the future when we get destroyed due to abnormal
   // shutdown. Its better just to crash here. On desktop though, we have a chance
   // of recovering.
-  if (aWhy == AbnormalShutdown) {
     NS_RUNTIMEABORT("ActorDestroy by IPC channel failure at CompositorChild");
-  }
 #endif
 
+    // If the parent side runs into a problem then the actor will be destroyed.
+    // There is nothing we can do in the child side, here sets mCanSend as false.
+    mCanSend = false;
+    gfxCriticalNote << "Receive IPC close with reason=" << aWhy;
+  }
+
   MessageLoop::current()->PostTask(
     FROM_HERE,
     NewRunnableMethod(this, &CompositorChild::Release));