Remove support for custom overscroll background

Mac was the only platform to do this, and more recent versions
of the OS do not support it anymore. Callers to these functions
have been removed from the Blink side.

BUG=248742

Review URL: https://codereview.chromium.org/838603002

Cr-Commit-Position: refs/heads/master@{#312529}

6 files changed, 0 insertions, 11 deletions

diff --git a/content/app/resources/content_resources.grd b/content/app/resources/content_resources.grd
index 9c4373b..d451858 100644
--- a/content/app/resources/content_resources.grd
+++ b/content/app/resources/content_resources.grd
@@ -50,8 +50,6 @@
       <structure type="chrome_scaled_image" name="IDR_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF" file="mediaplayer_overlay_cast_off.png" />
       <structure type="chrome_scaled_image" name="IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON" file="mediaplayer_overlay_play.png" />
       <if expr="is_macosx">
-        <structure type="chrome_scaled_image" name="IDR_OVERHANG_PATTERN" file="overhang_pattern.png" />
-        <structure type="chrome_scaled_image" name="IDR_OVERHANG_SHADOW" file="overhang_shadow.png" />
         <structure type="chrome_scaled_image" name="IDR_ALIAS_CURSOR" file="alias_cursor.png" />
         <structure type="chrome_scaled_image" name="IDR_CELL_CURSOR" file="cell_cursor.png" />
         <structure type="chrome_scaled_image" name="IDR_EAST_RESIZE_CURSOR" file="east_resize_cursor.png" />
diff --git a/content/app/resources/default_100_percent/overhang_pattern.png b/content/app/resources/default_100_percent/overhang_pattern.png
deleted file mode 100644
index 838e87c..0000000
--- a/content/app/resources/default_100_percent/overhang_pattern.png
+++ /dev/null
diff --git a/content/app/resources/default_100_percent/overhang_shadow.png b/content/app/resources/default_100_percent/overhang_shadow.png
deleted file mode 100644
index 4e0fc4b..0000000
--- a/content/app/resources/default_100_percent/overhang_shadow.png
+++ /dev/null
diff --git a/content/child/blink_platform_impl.cc b/content/child/blink_platform_impl.cc
index e0f565e..e0ef4c9 100644
--- a/content/child/blink_platform_impl.cc
+++ b/content/child/blink_platform_impl.cc
@@ -808,10 +808,6 @@ const DataResource kDataResources[] = {
     IDR_MEDIAPLAYER_OVERLAY_CAST_BUTTON_OFF, ui::SCALE_FACTOR_100P },
   { "mediaplayerOverlayPlay",
     IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON, ui::SCALE_FACTOR_100P },
-#if defined(OS_MACOSX)
-  { "overhangPattern", IDR_OVERHANG_PATTERN, ui::SCALE_FACTOR_100P },
-  { "overhangShadow", IDR_OVERHANG_SHADOW, ui::SCALE_FACTOR_100P },
-#endif
   { "panIcon", IDR_PAN_SCROLL_ICON, ui::SCALE_FACTOR_100P },
   { "searchCancel", IDR_SEARCH_CANCEL, ui::SCALE_FACTOR_100P },
   { "searchCancelPressed", IDR_SEARCH_CANCEL_PRESSED, ui::SCALE_FACTOR_100P },
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 51cf48e..2b645e8 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -583,10 +583,6 @@ void RenderWidgetCompositor::setHasTransparentBackground(bool transparent) {
   layer_tree_host_->set_has_transparent_background(transparent);
 }
 
-void RenderWidgetCompositor::setOverhangBitmap(const SkBitmap& bitmap) {
-  layer_tree_host_->SetOverhangBitmap(bitmap);
-}
-
 void RenderWidgetCompositor::setVisible(bool visible) {
   layer_tree_host_->SetVisible(visible);
 }
diff --git a/content/renderer/gpu/render_widget_compositor.h b/content/renderer/gpu/render_widget_compositor.h
index c36a945..d877e2b 100644
--- a/content/renderer/gpu/render_widget_compositor.h
+++ b/content/renderer/gpu/render_widget_compositor.h
@@ -98,7 +98,6 @@ class CONTENT_EXPORT RenderWidgetCompositor
   virtual float deviceScaleFactor() const;
   virtual void setBackgroundColor(blink::WebColor color);
   virtual void setHasTransparentBackground(bool transparent);
-  virtual void setOverhangBitmap(const SkBitmap& bitmap);
   virtual void setVisible(bool visible);
   virtual void setPageScaleFactorAndLimits(float page_scale_factor,
                                            float minimum,