Backed out changeset b44a56033fc8 (bug 1645520) for test_fullscreen-api.html failures CLOSED TREE

layout/base/MobileViewportManager.cpp

@@ -540,29 +540,9 @@ void MobileViewportManager::RefreshVisualViewportSize() {
   ScreenIntSize displaySize = ViewAs<ScreenPixel>(
       mDisplaySize, PixelCastJustification::LayoutDeviceIsScreenForBounds);
 
-  if (displaySize.width == 0 || displaySize.height == 0) {
-    return;
-  }
-
   UpdateVisualViewportSize(displaySize, GetZoom());
 }
 
-void MobileViewportManager::NotifyResizeReflow() {
-  // If there's a resize-reflow, the visual viewport may need to be recomputed
-  // for a new display size, so let's do that.
-  if (Maybe<LayoutDeviceIntSize> newDisplaySize =
-          mContext->GetContentViewerSize()) {
-    // Note that we intentionally don't short-circuit here if the display size
-    // (in LD units) is unchanged, because a resize-reflow may also be triggered
-    // by a change in the CSS/LD pixel ratio which would affect GetZoom() and
-    // therefore the computed visual viewport.
-    mDisplaySize = *newDisplaySize;
-    MVM_LOG("%p: Display size updated to %s\n", this,
-            Stringify(mDisplaySize).c_str());
-    RefreshVisualViewportSize();
-  }
-}
-
 void MobileViewportManager::RefreshViewportSize(bool aForceAdjustResolution) {
   // This function gets called by the various triggers that may result in a
   // change of the CSS viewport. In some of these cases (e.g. the meta-viewport

layout/base/MobileViewportManager.h

@@ -74,12 +74,6 @@ class MobileViewportManager final : public nsIDOMEventListener,
   void SetRestoreResolution(float aResolution);
 
  public:
-  /* Notify the MobileViewportManager that a resize-reflow is about to happen,
-   * possibly indicating a change in the display size or some other quantity
-   * that the visual viewport depends on.
-   */
-  void NotifyResizeReflow();
-
   /* Notify the MobileViewportManager that a reflow was requested in the
    * presShell.*/
   void RequestReflow(bool aForceAdjustResolution);

layout/base/PresShell.cpp

@@ -1955,9 +1955,6 @@ nsresult PresShell::ResizeReflow(nscoord aWidth, nscoord aHeight,
     mMobileViewportManager->RequestReflow(false);
     return NS_OK;
   }
-  if (mMobileViewportManager) {
-    mMobileViewportManager->NotifyResizeReflow();
-  }
 
   return ResizeReflowIgnoreOverride(aWidth, aHeight, aOptions);
 }

testing/web-platform/meta/css/css-scroll-anchoring/start-edge-in-block-layout-direction.html.ini

@@ -0,0 +1,26 @@
+[start-edge-in-block-layout-direction.html]
+  [Vertical-RL LTR.]
+    expected:
+      if (os == "android") and not e10s: FAIL
+      if (os == "android") and e10s: FAIL
+
+  [Horizontal RTL.]
+    expected:
+      if (os == "android") and not e10s: FAIL
+      if (os == "android") and e10s: FAIL
+
+  [Vertical-LR LTR.]
+    expected:
+      if (os == "android") and not e10s: FAIL
+      if (os == "android") and e10s: FAIL
+
+  [Vertical-RL RTL.]
+    expected:
+      if (os == "android") and not e10s: FAIL
+      if (os == "android") and e10s: FAIL
+
+  [Vertical-LR RTL.]
+    expected:
+      if (os == "android") and not e10s: FAIL
+      if (os == "android") and e10s: FAIL
+