Bug 1778232 - ImageFormat::s/CAIRO_SURFACE/MOZ2D_SURFACE/. r=jrmuizel

Also remove comment that says it can't be off-main-thread.

Differential Revision: https://phabricator.services.mozilla.com/D151087

dom/canvas/ImageUtils.cpp

@@ -176,7 +176,7 @@ ImageUtils::ImageUtils(layers::Image* aImage) : mImpl(nullptr) {
     case mozilla::ImageFormat::NV_IMAGE:
       mImpl = new YUVImpl(aImage);
       break;
-    case mozilla::ImageFormat::CAIRO_SURFACE:
+    case mozilla::ImageFormat::MOZ2D_SURFACE:
     default:
       mImpl = new Impl(aImage);
   }

gfx/gl/GLBlitHelper.cpp

@@ -826,7 +826,7 @@ bool GLBlitHelper::BlitImageToFramebuffer(layers::Image* const srcImage,
 #else
       return false;
 #endif
-    case ImageFormat::CAIRO_SURFACE:
+    case ImageFormat::MOZ2D_SURFACE:
     case ImageFormat::NV_IMAGE:
     case ImageFormat::OVERLAY_IMAGE:
     case ImageFormat::SHARED_RGB:

gfx/layers/ImageContainer.cpp

@@ -895,13 +895,13 @@ UniquePtr<uint8_t[]> NVImage::AllocateBuffer(uint32_t aSize) {
 
 SourceSurfaceImage::SourceSurfaceImage(const gfx::IntSize& aSize,
                                        gfx::SourceSurface* aSourceSurface)
-    : Image(nullptr, ImageFormat::CAIRO_SURFACE),
+    : Image(nullptr, ImageFormat::MOZ2D_SURFACE),
       mSize(aSize),
       mSourceSurface(aSourceSurface),
       mTextureFlags(TextureFlags::DEFAULT) {}
 
 SourceSurfaceImage::SourceSurfaceImage(gfx::SourceSurface* aSourceSurface)
-    : Image(nullptr, ImageFormat::CAIRO_SURFACE),
+    : Image(nullptr, ImageFormat::MOZ2D_SURFACE),
       mSize(aSourceSurface->GetSize()),
       mSourceSurface(aSourceSurface),
       mTextureFlags(TextureFlags::DEFAULT) {}

gfx/layers/ImageTypes.h

@@ -33,19 +33,15 @@ enum class ImageFormat {
   SHARED_RGB,
 
   /**
-   * The CAIRO_SURFACE format creates a SourceSurfaceImage. All backends should
+   * The MOZ2D_SURFACE format creates a SourceSurfaceImage. All backends should
    * support this format, because video rendering sometimes requires it.
    *
    * This format is useful even though a PaintedLayer could be used.
    * It makes it easy to render a cairo surface when another Image format
    * could be used. It can also avoid copying the surface data in some
    * cases.
-   *
-   * Images in CAIRO_SURFACE format should only be created and
-   * manipulated on the main thread, since the underlying cairo surface
-   * is main-thread-only.
    */
-  CAIRO_SURFACE,
+  MOZ2D_SURFACE,
 
   /**
    * A MacIOSurface object.