Introduce mailbox-based version of VideoTextureBacking

This CL introduces an OOPR compatible version of VideoTextureBacking and
updates PaintCanvasVideoRenderer::UpdateLastImage() to use this new
version in the OOPR codepath.

More details about overall PaintImage effort: crbug.com/1023259
Info about the OOPR-Canvas2D project: crbug.com/1018894

Bug: 1115217
Change-Id: I4590cf16d6faef0e5575b0b4006ea88de89aa13d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2419653
Reviewed-by: Khushal <khushalsagar@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Jonah Chin <jochin@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#826449}

cc/paint/paint_image.cc

@@ -298,11 +298,6 @@ void PaintImage::FlushPendingSkiaOps() {
     texture_backing_->FlushPendingSkiaOps();
 }
 
-bool PaintImage::HasExclusiveTextureAccess() const {
-  DCHECK(IsTextureBacked());
-  return texture_backing_->unique();
-}
-
 int PaintImage::width() const {
   return paint_worklet_input_
              ? static_cast<int>(paint_worklet_input_->GetSize().width())

cc/paint/paint_image.h

@@ -235,11 +235,12 @@ class CC_PAINT_EXPORT PaintImage {
                   int src_x,
                   int src_y) const;
 
-  SkImageInfo GetSkImageInfo() const;
+  // Returned mailbox must not outlive this PaintImage.
+  gpu::Mailbox GetMailbox() const;
 
   Id stable_id() const { return id_; }
   const sk_sp<SkImage>& GetSkImage() const;
-  gpu::Mailbox GetMailbox() const;
+  SkImageInfo GetSkImageInfo() const;
   AnimationType animation_type() const { return animation_type_; }
   CompletionState completion_state() const { return completion_state_; }
   bool is_multipart() const { return is_multipart_; }
@@ -262,7 +263,6 @@ class CC_PAINT_EXPORT PaintImage {
   // Skia internally buffers commands and flushes them as necessary but there
   // are some cases where we need to force a flush.
   void FlushPendingSkiaOps();
-  bool HasExclusiveTextureAccess() const;
   int width() const;
   int height() const;
   SkColorSpace* color_space() const {

cc/paint/paint_op_buffer.cc

@@ -1431,9 +1431,14 @@ void DrawImageOp::RasterWithFlags(const DrawImageOp* op,
       canvas->scale(1.f / op->scale_adjustment.width(),
                     1.f / op->scale_adjustment.height());
     }
-    auto sk_image = op->image.IsTextureBacked()
-                        ? op->image.GetAcceleratedSkImage()
-                        : op->image.GetSwSkImage();
+    sk_sp<SkImage> sk_image;
+    if (op->image.IsTextureBacked()) {
+      sk_image = op->image.GetAcceleratedSkImage();
+      DCHECK(sk_image || !canvas->recordingContext());
+    }
+    if (!sk_image)
+      sk_image = op->image.GetSwSkImage();
+
     canvas->drawImage(sk_image.get(), op->left, op->top, &paint);
     return;
   }
@@ -1505,9 +1510,13 @@ void DrawImageRectOp::RasterWithFlags(const DrawImageRectOp* op,
   if (!params.image_provider) {
     SkRect adjusted_src = AdjustSrcRectForScale(op->src, op->scale_adjustment);
     flags->DrawToSk(canvas, [op, adjusted_src](SkCanvas* c, const SkPaint& p) {
-      auto sk_image = op->image.IsTextureBacked()
-                          ? op->image.GetAcceleratedSkImage()
-                          : op->image.GetSwSkImage();
+      sk_sp<SkImage> sk_image;
+      if (op->image.IsTextureBacked()) {
+        sk_image = op->image.GetAcceleratedSkImage();
+        DCHECK(sk_image || !c->recordingContext());
+      }
+      if (!sk_image)
+        sk_image = op->image.GetSwSkImage();
       c->drawImageRect(sk_image.get(), adjusted_src, op->dst, &p,
                        op->constraint);
     });

media/blink/webmediaplayer_impl.cc

@@ -1347,8 +1347,9 @@ void WebMediaPlayerImpl::Paint(cc::PaintCanvas* canvas,
   if (video_frame && video_frame->HasTextures()) {
     if (!raster_context_provider_)
       return;  // Unable to get/create a shared main thread context.
-    if (!raster_context_provider_->GrContext())
-      return;  // The context has been lost since and can't setup a GrContext.
+    DCHECK(
+        raster_context_provider_->ContextCapabilities().supports_oop_raster ||
+        raster_context_provider_->GrContext());
   }
   if (out_metadata && video_frame) {
     // WebGL last-uploaded-frame-metadata API enabled. https://crbug.com/639174