Make gfx::Rect class operations consistently mutate the class they are called on.

ui/views/widget/widget.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/views/widget/widget.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "ui/base/events/event.h"
@@ skipping 456 matching lines @@
 
 void Widget::SetBoundsConstrained(const gfx::Rect& bounds) {
   gfx::Rect work_area =
       gfx::Screen::GetScreenFor(GetNativeView())->GetDisplayNearestPoint(
           bounds.origin()).work_area();
   if (work_area.IsEmpty()) {
     SetBounds(bounds);
   } else {
     // Inset the work area slightly.
     work_area.Inset(10, 10, 10, 10);
-    SetBounds(work_area.AdjustToFit(bounds));
+    work_area.AdjustToFit(bounds);
+    SetBounds(work_area);
   }
 }
 
 void Widget::SetVisibilityChangedAnimationsEnabled(bool value) {
   native_widget_->SetVisibilityChangedAnimationsEnabled(value);
 }
 
 Widget::MoveLoopResult Widget::RunMoveLoop(const gfx::Point& drag_offset) {
   return native_widget_->RunMoveLoop(drag_offset);
 }
@@ skipping 865 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // internal::NativeWidgetPrivate, NativeWidget implementation:
 
 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
   return this;
 }
 
 }  // namespace internal
 }  // namespace views