Added --deepColor option to SampleApp, triggers creation of a ten-bit/channel buffer on Windows.

src/views/unix/SkOSWindow_Unix.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include <X11/Xlib.h>
 #include <X11/Xatom.h>
 #include <X11/XKBlib.h>
 #include <GL/glx.h>
@@ skipping 330 matching lines @@
     }
 
 static void glXSwapInterval(Display* dsp, GLXDrawable drawable, int interval) {
     EXT_WRANGLE(glXSwapIntervalEXT, PFNGLXSWAPINTERVALEXTPROC, dsp, drawable, interval);
     EXT_WRANGLE(glXSwapIntervalMESA, PFNGLXSWAPINTERVALMESAPROC, interval);
     EXT_WRANGLE(glXSwapIntervalSGI, PFNGLXSWAPINTERVALSGIPROC, interval);
 }
 
 /////////////////////////////////////////////////////////////////////////
 
-bool SkOSWindow::attach(SkBackEndTypes, int msaaSampleCount, AttachmentInfo* info) {
+bool SkOSWindow::attach(SkBackEndTypes, int msaaSampleCount, bool deepColor,
+                        AttachmentInfo* info) {
     this->initWindow(msaaSampleCount, info);
 
     if (nullptr == fUnixWindow.fDisplay) {
         return false;
     }
     if (nullptr == fUnixWindow.fGLContext) {
         SkASSERT(fVi);
 
         fUnixWindow.fGLContext = glXCreateContext(fUnixWindow.fDisplay,
                                                   fVi,
@@ skipping 147 matching lines @@
 
 void SkEvent::SignalNonEmptyQueue() {
     // nothing to do, since we spin on our event-queue, polling for XPending
 }
 
 void SkEvent::SignalQueueTimer(SkMSec delay) {
     // just need to record the delay time. We handle waking up for it in
     // MyXNextEventWithDelay()
     gTimerDelay = delay;
 }