MacViews: Implement non-client frame view

chrome/browser/ui/views/frame/opaque_browser_frame_view.h

Index: chrome/browser/ui/views/frame/opaque_browser_frame_view.h
diff --git a/chrome/browser/ui/views/frame/opaque_browser_frame_view.h b/chrome/browser/ui/views/frame/opaque_browser_frame_view.h
index 1e1f2fc3ff6d3d630b5db7fa9b721a9ccb25c095..1a355b005afc70a34bd46adf3abac7e71dae3eb6 100644
--- a/chrome/browser/ui/views/frame/opaque_browser_frame_view.h
+++ b/chrome/browser/ui/views/frame/opaque_browser_frame_view.h
@@ -97,6 +97,7 @@ class OpaqueBrowserFrameView : public BrowserNonClientFrameView,
   void OnPaint(gfx::Canvas* canvas) override;
 
   // BrowserNonClientFrameView:
+  bool ShouldPaintAsThemed() const override;
   void UpdateNewStyleAvatar() override;
 
  private:
@@ -144,12 +145,6 @@ class OpaqueBrowserFrameView : public BrowserNonClientFrameView,
   void PaintToolbarBackground(gfx::Canvas* canvas);
   void PaintRestoredClientEdge(gfx::Canvas* canvas);
 
-  // Compute aspects of the frame needed to paint the frame background.
-  SkColor GetFrameColor() const;
-  gfx::ImageSkia* GetFrameImage() const;
-  gfx::ImageSkia* GetFrameOverlayImage() const;
-  int GetTopAreaHeight() const;
-
   // Returns the bounds of the client area for the specified view size.
   gfx::Rect CalculateClientAreaBounds(int width, int height) const;