[Win] Draw the circular avatar programmatically rather than with a frame.

ui/gfx/canvas.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/canvas.h"
 
 #include <cmath>
 #include <limits>
 
 #include "base/i18n/rtl.h"
@@ skipping 166 matching lines @@
 }
 
 void Canvas::Save() {
   canvas_->save();
 }
 
 void Canvas::SaveLayerAlpha(uint8 alpha) {
   canvas_->saveLayerAlpha(NULL, alpha);
 }
 
-
 void Canvas::SaveLayerAlpha(uint8 alpha, const Rect& layer_bounds) {
   SkRect bounds(RectToSkRect(layer_bounds));
   canvas_->saveLayerAlpha(&bounds, alpha);
 }
 
 void Canvas::Restore() {
   canvas_->restore();
 }
 
 void Canvas::ClipRect(const Rect& rect) {
   canvas_->clipRect(RectToSkRect(rect));
 }
 
-void Canvas::ClipPath(const SkPath& path) {
-  canvas_->clipPath(path);
+void Canvas::ClipPath(const SkPath& path, bool do_anti_alias) {
+  canvas_->clipPath(path, SkRegion::kIntersect_Op, do_anti_alias);
 }
 
 bool Canvas::IsClipEmpty() const {
   return canvas_->isClipEmpty();
 }
 
 bool Canvas::GetClipBounds(Rect* bounds) {
   SkRect out;
   bool has_non_empty_clip = canvas_->getClipBounds(&out);
   bounds->SetRect(out.left(), out.top(), out.width(), out.height());
@@ skipping 415 matching lines @@
   SkPaint p(paint);
   p.setFilterLevel(filter ? SkPaint::kLow_FilterLevel
                           : SkPaint::kNone_FilterLevel);
   p.setShader(shader.get());
 
   // The rect will be filled by the bitmap.
   canvas_->drawRect(dest_rect, p);
 }
 
 }  // namespace gfx