Fixed bad bitmap size crashes

src/effects/SkColorFilterImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkColorFilterImageFilter.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
@@ skipping 95 matching lines @@
         return false;
     }
 
     SkIRect bounds;
     src.getBounds(&bounds);
     if (!this->applyCropRect(&bounds, matrix)) {
         return false;
     }
 
     SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
+    if (NULL == device.get()) {
+        return false;
+    }
     SkCanvas canvas(device.get());
     SkPaint paint;
 
     paint.setXfermodeMode(SkXfermode::kSrc_Mode);
     paint.setColorFilter(fColorFilter);
     canvas.drawSprite(src, -bounds.fLeft, -bounds.fTop, &paint);
 
     *result = device.get()->accessBitmap(false);
     loc->fX += bounds.fLeft;
     loc->fY += bounds.fTop;
     return true;
 }
 
 bool SkColorFilterImageFilter::asColorFilter(SkColorFilter** filter) const {
     if (!cropRectIsSet()) {
         if (filter) {
             *filter = fColorFilter;
             fColorFilter->ref();
         }
         return true;
     }
     return false;
 }