x11: Use scoped_ptr<> for X11 objects where it makes sense.

ui/views/widget/desktop_aura/desktop_window_tree_host_x11_unittest.cc

 // Copyright 2014 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 <vector>
 
 #include <X11/extensions/shape.h>
 #include <X11/Xlib.h>
 
 // Get rid of X11 macros which conflict with gtest.
@@ skipping 138 matching lines @@
   params.bounds = gfx::Rect(100, 100, 100, 100);
   widget->Init(params);
   return widget.Pass();
 }
 
 // Returns the list of rectangles which describe |xid|'s bounding region via the
 // X shape extension.
 std::vector<gfx::Rect> GetShapeRects(XID xid) {
   int dummy;
   int shape_rects_size;
-  XRectangle* shape_rects = XShapeGetRectangles(gfx::GetXDisplay(),
-                                                xid,
-                                                ShapeBounding,
-                                                &shape_rects_size,
-                                                &dummy);
+  gfx::XScopedPtr<XRectangle[]> shape_rects(XShapeGetRectangles(
+      gfx::GetXDisplay(), xid, ShapeBounding, &shape_rects_size, &dummy));
 
   std::vector<gfx::Rect> shape_vector;
   for (int i = 0; i < shape_rects_size; ++i) {
-    shape_vector.push_back(gfx::Rect(
-        shape_rects[i].x,
-        shape_rects[i].y,
-        shape_rects[i].width,
-        shape_rects[i].height));
+    const XRectangle& rect = shape_rects[i];
+    shape_vector.push_back(gfx::Rect(rect.x, rect.y, rect.width, rect.height));
   }
-  XFree(shape_rects);
   return shape_vector;
 }
 
 // Returns true if one of |rects| contains point (x,y).
 bool ShapeRectContainsPoint(const std::vector<gfx::Rect>& shape_rects,
                             int x,
                             int y) {
   gfx::Point point(x, y);
   for (size_t i = 0; i < shape_rects.size(); ++i) {
     if (shape_rects[i].Contains(point))
@@ skipping 406 matching lines @@
   EXPECT_EQ(ui::ET_MOUSEWHEEL, second_recorder.mouse_events()[0].type());
   EXPECT_EQ(gfx::Point(-25, -25).ToString(),
             second_recorder.mouse_events()[0].location().ToString());
 
   PretendCapture(nullptr);
   first.GetNativeWindow()->RemovePreTargetHandler(&first_recorder);
   second.GetNativeWindow()->RemovePreTargetHandler(&second_recorder);
 }
 
 }  // namespace views