Revert of Revert "compositor: Fix texture flipping for SW mirroring with surfaceless"

content/browser/compositor/reflector_impl.h

Index: content/browser/compositor/reflector_impl.h
diff --git a/content/browser/compositor/reflector_impl.h b/content/browser/compositor/reflector_impl.h
index 4d0da018ded46f53fc425457986b943de4db0669..2e3b1b80fb0cd7db5d23cdec34af4b9152248bc4 100644
--- a/content/browser/compositor/reflector_impl.h
+++ b/content/browser/compositor/reflector_impl.h
@@ -10,6 +10,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/lock.h"
 #include "content/browser/compositor/image_transport_factory.h"
+#include "content/common/content_export.h"
 #include "gpu/command_buffer/common/mailbox_holder.h"
 #include "ui/compositor/reflector.h"
 #include "ui/gfx/geometry/size.h"
@@ -30,8 +31,9 @@
 
 // A reflector implementation that copies the framebuffer content
 // to the texture, then draw it onto the mirroring compositor.
-class ReflectorImpl : public base::SupportsWeakPtr<ReflectorImpl>,
-                      public ui::Reflector {
+class CONTENT_EXPORT ReflectorImpl
+    : public base::SupportsWeakPtr<ReflectorImpl>,
+      public ui::Reflector {
  public:
   ReflectorImpl(
       ui::Compositor* mirrored_compositor,
@@ -78,6 +80,8 @@
   void DetachFromOutputSurface();
 
  private:
+  friend class ReflectorImplTest;
+
   struct MainThreadData {
     MainThreadData(ui::Compositor* mirrored_compositor,
                    ui::Layer* mirroring_layer);
@@ -86,6 +90,7 @@
     bool needs_set_mailbox;
     ui::Compositor* mirrored_compositor;
     ui::Layer* mirroring_layer;
+    bool flip_texture;
   };
 
   struct ImplThreadData {
@@ -110,11 +115,12 @@
   // Request full redraw on mirroring compositor.
   void FullRedrawOnMainThread(gfx::Size size);
 
-  void UpdateSubBufferOnMainThread(gfx::Size size, gfx::Rect rect);
+  void UpdateSubBufferOnMainThread(const gfx::Size& size,
+                                   const gfx::Rect& rect);
 
   // Request full redraw on mirrored compositor so that
   // the full content will be copied to mirroring compositor.
-  void FullRedrawContentOnMainThread();
+  void FullRedrawContentOnMainThread(bool flip_texture);
 
   // This exists just to hold a reference to a ReflectorImpl in a post task,
   // so the ReflectorImpl gets deleted when the function returns.