Make tab/tabstrip high density compatible

ui/base/ui_base_switches.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/base/ui_base_switches.h"
 
 namespace switches {
 
+// Whether or not ImageSkiaOperations methods can scale one of images
+// if they don't have the same scale factor.
+const char kDisableScalingInImageSkiaOperations[] =
+    "disable-scaling-in-image-skia-operations";
+
 // Let text glyphs have X-positions that aren't snapped to the pixel grid.
 const char kEnableTextSubpixelPositioning[] =
     "enable-text-subpixel-positioning";
 
 // Enable touch screen calibration.
 const char kEnableTouchCalibration[] = "enable-touch-calibration";
 
 // Enable support for touch events.
 const char kEnableTouchEvents[] = "enable-touch-events";
 
@@ skipping 54 matching lines @@
 #endif
 
 #if defined(TOOLKIT_VIEWS) && defined(OS_LINUX)
 // Tells chrome to interpret events from these devices as touch events. Only
 // available with XInput 2 (i.e. X server 1.8 or above). The id's of the
 // devices can be retrieved from 'xinput list'.
 const char kTouchDevices[] = "touch-devices";
 #endif
 
 }  // namespace switches