Remove dependency on ui::ScaleFactor from ui/gfx

chrome/browser/ui/cocoa/panels/panel_stack_window_cocoa.mm

 // Copyright (c) 2013 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 "chrome/browser/ui/cocoa/panels/panel_stack_window_cocoa.h"
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #import "chrome/browser/ui/cocoa/panels/panel_cocoa.h"
 #import "chrome/browser/ui/cocoa/panels/panel_utils_cocoa.h"
@@ skipping 275 matching lines @@
   }
   bounds_updates_.clear();
 
   delegate_->PanelBoundsBatchUpdateCompleted();
 }
 
 void PanelStackWindowCocoa::Minimize() {
   // Provide the custom miniwindow image since there is nothing painted for
   // the background stack window.
   gfx::Size stack_window_size = GetStackWindowBounds().size();
-  gfx::Canvas canvas(stack_window_size, ui::SCALE_FACTOR_100P, true);
+  gfx::Canvas canvas(stack_window_size, 1.0f, true);
   int y = 0;
   Panels::const_iterator iter = panels_.begin();
   for (; iter != panels_.end(); ++iter) {
     Panel* panel = *iter;
     gfx::Rect snapshot_bounds = gfx::Rect(panel->GetBounds().size());
     std::vector<unsigned char> png;
     if (!chrome::GrabWindowSnapshotForUser(panel->GetNativeWindow(),
                                            &png,
                                            snapshot_bounds)) {
       break;
@@ skipping 65 matching lines @@
       [[NSWindow alloc] initWithContentRect:ui::kWindowSizeDeterminedLater
                                   styleMask:NSBorderlessWindowMask
                                     backing:NSBackingStoreBuffered
                                       defer:NO]);
   [window_ setBackgroundColor:[NSColor clearColor]];
   [window_ setHasShadow:YES];
   [window_ setLevel:NSNormalWindowLevel];
   [window_ orderFront:nil];
   [window_ setTitle:base::SysUTF16ToNSString(delegate_->GetTitle())];
 }