fix iOS build -- pass colortype, not config

experimental/iOSSampleApp/SkSampleUIView.mm

 #import "SkSampleUIView.h"
 
-//#define SKWIND_CONFIG       SkBitmap::kRGB_565_Config
-#define SKWIND_CONFIG       SkBitmap::kARGB_8888_Config
 #define SKGL_CONFIG         kEAGLColorFormatRGB565
 //#define SKGL_CONFIG         kEAGLColorFormatRGBA8
 
 #define FORCE_REDRAW
 
 #include "SkCanvas.h"
 #include "SkCGUtils.h"
 #include "SampleApp.h"
 
 #if SK_SUPPORT_GPU
@@ skipping 316 matching lines @@
                                            [NSNull null], @"bounds",
                                            nil];
         fGLLayer.actions = newActions;
         fRasterLayer.actions = newActions;
         [newActions release];
         
         fDevManager = new SkiOSDeviceManager(fGL.fFramebuffer);
         static char* kDummyArgv = const_cast<char*>("dummyExecutableName");
         fWind = new SampleWindow(self, 1, &kDummyArgv, fDevManager);
 
-        fWind->resize(self.frame.size.width, self.frame.size.height, SKWIND_CONFIG);
+        fWind->resize(self.frame.size.width, self.frame.size.height,
+                      kPMColor_SkColorType);
     }
     return self;
 }
 
 - (void)dealloc {
     delete fDevManager;
     delete fFPSState;
     self.fRasterLayer = nil;
     self.fGLLayer = nil;
     [fGL.fContext release];
@@ skipping 134 matching lines @@
     glBindRenderbuffer(GL_RENDERBUFFER, fGL.fRenderbuffer);
     glGetRenderbufferParameteriv(GL_RENDERBUFFER,
                                  GL_RENDERBUFFER_STENCIL_SIZE,
                                  &info->fStencilBits);
     glGetRenderbufferParameteriv(GL_RENDERBUFFER,
                                  GL_RENDERBUFFER_SAMPLES_APPLE,
                                  &info->fSampleCount);
 }
 
 @end