Fix errors caused by unsafe conversions to/from size_t

third_party/WebKit/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 230 matching lines @@
     m_status = ImageFrame::FramePartial;
     m_lazyDecoder->setData(*m_data, false);
     EXPECT_FALSE(m_lazyDecoder->frameIsCompleteAtIndex(0));
     RefPtr<SkImage> image = m_lazyDecoder->createFrameAtIndex(0);
     ASSERT_TRUE(image);
     unsigned firstId = image->uniqueID();
     EXPECT_FALSE(m_lazyDecoder->frameIsCompleteAtIndex(0));
     EXPECT_TRUE(m_actualDecoder);
 
     m_status = ImageFrame::FrameComplete;
-    m_data->append(" ", 1);
+    m_data->append(" ", 1u);
     m_lazyDecoder->setData(*m_data, true);
     EXPECT_FALSE(m_actualDecoder);
     EXPECT_TRUE(m_lazyDecoder->frameIsCompleteAtIndex(0));
 
     image = m_lazyDecoder->createFrameAtIndex(0);
     ASSERT_TRUE(image);
     unsigned secondId = image->uniqueID();
     EXPECT_FALSE(m_decodeRequestCount);
     EXPECT_NE(firstId, secondId);
 }
 
 TEST_F(DeferredImageDecoderTest, multiFrameImageLoading)
 {
     m_repetitionCount = 10;
     m_frameCount = 1;
     m_frameDuration = 10;
     m_status = ImageFrame::FramePartial;
     m_lazyDecoder->setData(*m_data, false);
 
     RefPtr<SkImage> image = m_lazyDecoder->createFrameAtIndex(0);
     ASSERT_TRUE(image);
     unsigned firstId = image->uniqueID();
     EXPECT_FALSE(m_lazyDecoder->frameIsCompleteAtIndex(0));
     EXPECT_EQ(10.0f, m_lazyDecoder->frameDurationAtIndex(0));
 
     m_frameCount = 2;
     m_frameDuration = 20;
     m_status = ImageFrame::FrameComplete;
-    m_data->append(" ", 1);
+    m_data->append(" ", 1u);
     m_lazyDecoder->setData(*m_data, false);
 
     image = m_lazyDecoder->createFrameAtIndex(0);
     ASSERT_TRUE(image);
     unsigned secondId = image->uniqueID();
     EXPECT_NE(firstId, secondId);
     EXPECT_TRUE(m_lazyDecoder->frameIsCompleteAtIndex(0));
     EXPECT_TRUE(m_lazyDecoder->frameIsCompleteAtIndex(1));
     EXPECT_EQ(20.0f, m_lazyDecoder->frameDurationAtIndex(1));
     EXPECT_TRUE(m_actualDecoder);
@@ skipping 68 matching lines @@
     // After decoding, the frame is known to be opaque.
     frame = decoder->createFrameAtIndex(0);
     ASSERT_TRUE(frame);
     EXPECT_TRUE(frame->isOpaque());
 
     // Re-generating the opaque-marked frame should not fail.
     EXPECT_TRUE(frame->readPixels(pixels, 0, 0));
 }
 
 } // namespace blink