5 files changed, 28 insertions, 1 deletions
diff --git a/gfx/layers/apz/src/APZCTreeManager.cpp b/gfx/layers/apz/src/APZCTreeManager.cpp
index f54326360..00eb3f183 100644
--- a/gfx/layers/apz/src/APZCTreeManager.cpp
+++ b/gfx/layers/apz/src/APZCTreeManager.cpp
@@ -85,6 +85,21 @@ struct APZCTreeManager::TreeBuildingState {
   std::map<ScrollableLayerGuid, AsyncPanZoomController*> mApzcMap;
 };
 
+// Returns whether or not a wheel event action will be (or was) performed by
+// APZ. If this returns true, the event must not perform a synchronous
+// scroll.
+//
+// Even if this returns false, all wheel events in APZ-aware widgets must
+// be sent through APZ so they are transformed correctly for TabParent.
+static bool
+WillHandleWheelEvent(WidgetWheelEvent* aEvent)
+{
+  return EventStateManager::WheelEventIsScrollAction(aEvent) &&
+         (aEvent->mDeltaMode == nsIDOMWheelEvent::DOM_DELTA_LINE ||
+          aEvent->mDeltaMode == nsIDOMWheelEvent::DOM_DELTA_PIXEL ||
+          aEvent->mDeltaMode == nsIDOMWheelEvent::DOM_DELTA_PAGE);
+}
+
 class APZCTreeManager::CheckerboardFlushObserver : public nsIObserver {
 public:
   NS_DECL_ISUPPORTS
diff --git a/gfx/layers/apz/src/AsyncPanZoomController.cpp b/gfx/layers/apz/src/AsyncPanZoomController.cpp
index 3d4112395..d9ad3ae78 100644
--- a/gfx/layers/apz/src/AsyncPanZoomController.cpp
+++ b/gfx/layers/apz/src/AsyncPanZoomController.cpp
@@ -33,6 +33,7 @@
 #include "mozilla/ClearOnShutdown.h"    // for ClearOnShutdown
 #include "mozilla/ComputedTimingFunction.h" // for ComputedTimingFunction
 #include "mozilla/EventForwards.h"      // for nsEventStatus_*
+#include "mozilla/EventStateManager.h"
 #include "mozilla/MouseEvents.h"        // for WidgetWheelEvent
 #include "mozilla/Preferences.h"        // for Preferences
 #include "mozilla/ReentrantMonitor.h"   // for ReentrantMonitorAutoEnter, etc
@@ -44,6 +45,7 @@
 #include "mozilla/dom/Touch.h"          // for Touch
 #include "mozilla/gfx/BasePoint.h"      // for BasePoint
 #include "mozilla/gfx/BaseRect.h"       // for BaseRect
+#include "mozilla/gfx/Coord.h"
 #include "mozilla/gfx/Point.h"          // for Point, RoundedToInt, etc
 #include "mozilla/gfx/Rect.h"           // for RoundedIn
 #include "mozilla/gfx/ScaleFactor.h"    // for ScaleFactor
@@ -102,7 +104,12 @@ typedef GeckoContentController::APZStateChange APZStateChange;
 typedef GeckoContentController::TapType TapType;
 typedef mozilla::gfx::Point Point;
 typedef mozilla::gfx::Matrix4x4 Matrix4x4;
+using mozilla::gfx::CoordTyped;
+using mozilla::gfx::IntCoordTyped;
+using mozilla::gfx::IntRectTyped;
 using mozilla::gfx::PointTyped;
+using mozilla::gfx::RectTyped;
+using mozilla::gfx::ScaleFactors2D;
 
 // Choose between platform-specific implementations.
 #ifdef MOZ_WIDGET_ANDROID
@@ -833,7 +840,9 @@ AsyncPanZoomController::ArePointerEventsConsumable(TouchBlockState* aBlock, uint
 }
 
 template <typename Units>
-static CoordTyped<Units> GetAxisStart(AsyncDragMetrics::DragDirection aDir, const PointTyped<Units>& aValue) {
+static CoordTyped<Units> GetAxisStart(
+AsyncDragMetrics::DragDirection aDir,
+const PointTyped<Units>& aValue) {
   if (aDir == AsyncDragMetrics::HORIZONTAL) {
     return aValue.x;
   } else {
diff --git a/gfx/layers/apz/src/GestureEventListener.cpp b/gfx/layers/apz/src/GestureEventListener.cpp
index 7fd07f3ff..0bacc8778 100644
--- a/gfx/layers/apz/src/GestureEventListener.cpp
+++ b/gfx/layers/apz/src/GestureEventListener.cpp
@@ -13,6 +13,7 @@
 #include "mozilla/SizePrintfMacros.h"   // for PRIuSIZE
 #include "nsDebug.h"                    // for NS_WARNING
 #include "nsMathUtils.h"                // for NS_hypot
+#include "InputBlockState.h"            // for TouchBlockState
 
 #define GEL_LOG(...)
 // #define GEL_LOG(...) printf_stderr("GEL: " __VA_ARGS__)
diff --git a/gfx/layers/apz/src/InputBlockState.h b/gfx/layers/apz/src/InputBlockState.h
index 86fb0d03f..528609947 100644
--- a/gfx/layers/apz/src/InputBlockState.h
+++ b/gfx/layers/apz/src/InputBlockState.h
@@ -16,6 +16,7 @@
 #include "mozilla/TimeStamp.h"              // for TimeStamp
 #include "nsTArray.h"                       // for nsTArray
 #include "TouchCounter.h"
+#include "OverscrollHandoffState.h"
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/util/ContentProcessController.h b/gfx/layers/apz/util/ContentProcessController.h
index 07d113c9e..bb1a86d3f 100644
--- a/gfx/layers/apz/util/ContentProcessController.h
+++ b/gfx/layers/apz/util/ContentProcessController.h
@@ -8,6 +8,7 @@
 #define mozilla_layers_ContentProcessController_h
 
 #include "mozilla/layers/GeckoContentController.h"
+#include "mozilla/dom/ipc/IdType.h"
 
 class nsIObserver;