use tryAllocPixels to check the result, allocPixels to require success

Source/platform/graphics/DeferredImageDecoderTest.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 148 matching lines @@
     SkPictureRecorder recorder;
     SkCanvas* tempCanvas = recorder.beginRecording(100, 100, 0, 0);
     tempCanvas->drawBitmap(image->bitmap(), 0, 0);
     RefPtr<SkPicture> picture = adoptRef(recorder.endRecording());
     EXPECT_EQ(0, m_frameBufferRequestCount);
 
     m_canvas->drawPicture(picture.get());
     EXPECT_EQ(0, m_frameBufferRequestCount);
 
     SkBitmap canvasBitmap;
-    ASSERT_TRUE(canvasBitmap.allocN32Pixels(100, 100));
+    canvasBitmap.allocN32Pixels(100, 100);
     ASSERT_TRUE(m_canvas->readPixels(&canvasBitmap, 0, 0));
     SkAutoLockPixels autoLock(canvasBitmap);
     EXPECT_EQ(SkColorSetARGB(255, 255, 255, 255), canvasBitmap.getColor(0, 0));
 }
 
 TEST_F(DeferredImageDecoderTest, drawIntoSkPictureProgressive)
 {
     RefPtr<SharedBuffer> partialData = SharedBuffer::create(m_data->data(), m_data->size() - 10);
 
     // Received only half the file.
     m_lazyDecoder->setData(*partialData, false);
     RefPtr<NativeImageSkia> image = m_lazyDecoder->frameBufferAtIndex(0)->asNewNativeImage();
     SkPictureRecorder recorder;
     SkCanvas* tempCanvas = recorder.beginRecording(100, 100, 0, 0);
     tempCanvas->drawBitmap(image->bitmap(), 0, 0);
     RefPtr<SkPicture> picture = adoptRef(recorder.endRecording());
     m_canvas->drawPicture(picture.get());
 
     // Fully received the file and draw the SkPicture again.
     m_lazyDecoder->setData(*m_data, true);
     image = m_lazyDecoder->frameBufferAtIndex(0)->asNewNativeImage();
     tempCanvas = recorder.beginRecording(100, 100, 0, 0);
     tempCanvas->drawBitmap(image->bitmap(), 0, 0);
     picture = adoptRef(recorder.endRecording());
     m_canvas->drawPicture(picture.get());
 
     SkBitmap canvasBitmap;
-    ASSERT_TRUE(canvasBitmap.allocN32Pixels(100, 100));
+    canvasBitmap.allocN32Pixels(100, 100);
     ASSERT_TRUE(m_canvas->readPixels(&canvasBitmap, 0, 0));
     SkAutoLockPixels autoLock(canvasBitmap);
     EXPECT_EQ(SkColorSetARGB(255, 255, 255, 255), canvasBitmap.getColor(0, 0));
 }
 
 static void rasterizeMain(SkCanvas* canvas, SkPicture* picture)
 {
     canvas->drawPicture(picture);
 }
 
@@ skipping 12 matching lines @@
     RefPtr<SkPicture> picture = adoptRef(recorder.endRecording());
     EXPECT_EQ(0, m_frameBufferRequestCount);
 
     // Create a thread to rasterize SkPicture.
     OwnPtr<WebThread> thread = adoptPtr(Platform::current()->createThread("RasterThread"));
     thread->postTask(new Task(WTF::bind(&rasterizeMain, m_canvas.get(), picture.get())));
     thread.clear();
     EXPECT_EQ(0, m_frameBufferRequestCount);
 
     SkBitmap canvasBitmap;
-    ASSERT_TRUE(canvasBitmap.allocN32Pixels(100, 100));
+    canvasBitmap.allocN32Pixels(100, 100);
     ASSERT_TRUE(m_canvas->readPixels(&canvasBitmap, 0, 0));
     SkAutoLockPixels autoLock(canvasBitmap);
     EXPECT_EQ(SkColorSetARGB(255, 255, 255, 255), canvasBitmap.getColor(0, 0));
 }
 
 TEST_F(DeferredImageDecoderTest, singleFrameImageLoading)
 {
     m_status = ImageFrame::FramePartial;
     m_lazyDecoder->setData(*m_data, false);
     EXPECT_FALSE(m_lazyDecoder->frameIsCompleteAtIndex(0));
@@ skipping 95 matching lines @@
     EXPECT_EQ(m_frameCount, m_lazyDecoder->frameCount());
     m_frameCount = 2;
     m_lazyDecoder->setData(*m_data, false);
     EXPECT_EQ(m_frameCount, m_lazyDecoder->frameCount());
     m_frameCount = 0;
     m_lazyDecoder->setData(*m_data, true);
     EXPECT_EQ(m_frameCount, m_lazyDecoder->frameCount());
 }
 
 } // namespace blink