cc: Rework overlays to not use the ResourceProvider and pass texture size

cc/resources/texture_mailbox.h

Index: cc/resources/texture_mailbox.h
diff --git a/cc/resources/texture_mailbox.h b/cc/resources/texture_mailbox.h
index cec60cedacaa46b465ac9a54406505e360dca140..47e71acb199227a06375015e5955cbffe38e9685 100644
--- a/cc/resources/texture_mailbox.h
+++ b/cc/resources/texture_mailbox.h
@@ -22,7 +22,12 @@ class CC_EXPORT TextureMailbox {
   TextureMailbox();
   explicit TextureMailbox(const gpu::MailboxHolder& mailbox_holder);
   TextureMailbox(const gpu::Mailbox& mailbox, uint32 target, uint32 sync_point);
-  TextureMailbox(SharedBitmap* shared_bitmap, const gfx::Size& size);
+  TextureMailbox(const gpu::Mailbox& mailbox,
+                 uint32 target,
+                 uint32 sync_point,
+                 const gfx::Size& size_in_pixels,
+                 bool allow_overlay);
+  TextureMailbox(SharedBitmap* shared_bitmap, const gfx::Size& size_in_pixels);
 
   ~TextureMailbox();
 
@@ -41,20 +46,21 @@ class CC_EXPORT TextureMailbox {
   }
 
   bool allow_overlay() const { return allow_overlay_; }
-  void set_allow_overlay(bool allow_overlay) { allow_overlay_ = allow_overlay; }
   bool nearest_neighbor() const { return nearest_neighbor_; }
   void set_nearest_neighbor(bool nearest_neighbor) {
     nearest_neighbor_ = nearest_neighbor;
   }
 
+  // This is valid if allow_overlau() or IsSharedMemory() is true.
+  gfx::Size size_in_pixels() const { return size_in_pixels_; }
+
   SharedBitmap* shared_bitmap() const { return shared_bitmap_; }
-  gfx::Size shared_memory_size() const { return shared_memory_size_; }
   size_t SharedMemorySizeInBytes() const;
 
  private:
   gpu::MailboxHolder mailbox_holder_;
   SharedBitmap* shared_bitmap_;
-  gfx::Size shared_memory_size_;
+  gfx::Size size_in_pixels_;
   bool allow_overlay_;
   bool nearest_neighbor_;
 };