add new copyTo version to SkBitmap, which takes SkColorType

samplecode/SampleApp.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 "SampleApp.h"
 
 #include "SkData.h"
 #include "SkCanvas.h"
@@ skipping 1431 matching lines @@
         // to redraw.
         this->inval(NULL);
         return;
     }
 
     if (fRequestGrabImage) {
         fRequestGrabImage = false;
 
         SkBaseDevice* device = orig->getDevice();
         SkBitmap bmp;
-        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
+        if (device->accessBitmap(false).copyTo(&bmp, kPMColor_SkColorType)) {
             static int gSampleGrabCounter;
             SkString name;
             name.printf("sample_grab_%d.png", gSampleGrabCounter++);
             SkImageEncoder::EncodeFile(name.c_str(), bmp,
                                        SkImageEncoder::kPNG_Type, 100);
         }
     }
 
     if (kPicture_DeviceType == fDeviceType) {
         if (true) {
@@ skipping 1099 matching lines @@
     SkGraphics::Init();
     SkEvent::Init();
 }
 
 // FIXME: this should be in a header
 void application_term();
 void application_term() {
     SkEvent::Term();
     SkGraphics::Term();
 }