Bug 1237689 - Enable Oculus hardware latency tester r=daoshengmu

- Generate and pass sequential frame indexes into the ovr_GetTrackingState call and the corresponding call to ovr_SubmitFrame

MozReview-Commit-ID: 5tJl5YJt7Eo

gfx/layers/client/CanvasClient.cpp

@@ -25,6 +25,7 @@
 #include "nsDebug.h"                    // for printf_stderr, NS_ASSERTION
 #include "nsXULAppAPI.h"                // for XRE_GetProcessType, etc
 #include "TextureClientSharedSurface.h"
+#include "VRManagerChild.h"
 
 using namespace mozilla::gfx;
 using namespace mozilla::gl;
@@ -125,6 +126,7 @@ CanvasClient2D::Update(gfx::IntSize aSize, ClientCanvasLayer* aLayer)
     t->mTextureClient = mBuffer;
     t->mPictureRect = nsIntRect(nsIntPoint(0, 0), mBuffer->GetSize());
     t->mFrameID = mFrameID;
+    t->mInputFrameID = VRManagerChild::Get()->GetInputFrameID();
     GetForwarder()->UseTextures(this, textures);
     mBuffer->SyncWithObject(GetForwarder()->GetSyncObject());
   }
@@ -481,6 +483,11 @@ CanvasClientSharedSurface::Updated()
   t->mTextureClient = mFront;
   t->mPictureRect = nsIntRect(nsIntPoint(0, 0), mFront->GetSize());
   t->mFrameID = mFrameID;
+  // XXX TODO - This reference to VRManagerChild will be moved with the
+  //            implementation of the WebVR 1.0 API, which will enable
+  //            the inputFrameID to be passed through Javascript with
+  //            the new VRDisplay API.
+  t->mInputFrameID = VRManagerChild::Get()->GetInputFrameID();
   forwarder->UseTextures(this, textures);
 }