Remove un-used CanvasImageSource::AdjustDrawRects method

This method is empty for all cases.

Bug: 1042141
Change-Id: I449c83c533fa0f1593279a29f71bb019d49d8fd6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2056925
Auto-Submit: Stephen Chenney <schenney@chromium.org>
Commit-Queue: Fernando Serboncini <fserb@chromium.org>
Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#741504}

third_party/blink/renderer/core/html/canvas/canvas_image_source.h

@@ -35,7 +35,6 @@
 
 namespace blink {
 
-class FloatRect;
 class Image;
 
 enum SourceImageStatus {
@@ -67,12 +66,6 @@ class CORE_EXPORT CanvasImageSource {
   virtual bool IsImageBitmap() const { return false; }
   virtual bool IsOffscreenCanvas() const { return false; }
 
-  // Adjusts the source and destination rectangles for cases where the actual
-  // source image is a subregion of the image returned by
-  // getSourceImageForCanvas.
-  virtual void AdjustDrawRects(FloatRect* src_rect, FloatRect* dst_rect) const {
-  }
-
   virtual FloatSize ElementSize(const FloatSize& default_object_size) const = 0;
   virtual FloatSize DefaultDestinationSize(
       const FloatSize& default_object_size) const {

third_party/blink/renderer/core/imagebitmap/image_bitmap.cc

@@ -1117,9 +1117,6 @@ scoped_refptr<Image> ImageBitmap::GetSourceImageForCanvas(
   return GetImageWithAlphaDisposition(std::move(image_), kPremultiplyAlpha);
 }
 
-void ImageBitmap::AdjustDrawRects(FloatRect* src_rect,
-                                  FloatRect* dst_rect) const {}
-
 FloatSize ImageBitmap::ElementSize(const FloatSize&) const {
   return FloatSize(width(), height());
 }

third_party/blink/renderer/core/imagebitmap/image_bitmap.h

@@ -111,7 +111,6 @@ class CORE_EXPORT ImageBitmap final : public ScriptWrappable,
                                                AccelerationHint,
                                                const FloatSize&) override;
   bool WouldTaintOrigin() const override { return !image_->OriginClean(); }
-  void AdjustDrawRects(FloatRect* src_rect, FloatRect* dst_rect) const override;
   FloatSize ElementSize(const FloatSize&) const override;
   bool IsImageBitmap() const override { return true; }
   bool IsAccelerated() const override;

third_party/blink/renderer/modules/canvas/canvas2d/base_rendering_context_2d.cc

@@ -1203,8 +1203,6 @@ void BaseRenderingContext2D::drawImage(ScriptState* script_state,
   ClipRectsToImageRect(FloatRect(FloatPoint(), image_size), &src_rect,
                        &dst_rect);
 
-  image_source->AdjustDrawRects(&src_rect, &dst_rect);
-
   if (src_rect.IsEmpty())
     return;