Remove uses of SkBitmap::Config (deprecated) from core/ and platform/.

Source/platform/image-decoders/ImageFrame.cpp

Index: Source/platform/image-decoders/ImageFrame.cpp
diff --git a/Source/platform/image-decoders/ImageFrame.cpp b/Source/platform/image-decoders/ImageFrame.cpp
index 9363148fbff1dd19894519795717d92567b288b8..8f3308b35a7b6977cb5c0ddf6a42a5941a523df8 100644
--- a/Source/platform/image-decoders/ImageFrame.cpp
+++ b/Source/platform/image-decoders/ImageFrame.cpp
@@ -108,7 +108,7 @@ bool ImageFrame::setSize(int newWidth, int newHeight)
     // setSize() should only be called once, it leaks memory otherwise.
     ASSERT(!width() && !height());
 
-    m_bitmap->bitmap().setConfig(SkBitmap::kARGB_8888_Config, newWidth, newHeight);
+    m_bitmap->bitmap().setConfig(SkImageInfo::MakeN32Premul(newWidth, newHeight));

[reed1, 2014/03/17 13:25:18]

In the future, can we change over to using SkPixelRefFactory? That would allow
this to be an atomic operation, instead of setConfig + alloc.

    SkBitmap::allocPixels(const SkImageInfo&, SkPixelRefFactory*, SkColorTable*)

Not meant to block this CL...

[jbroman, 2014/03/17 16:46:38]

I don't know enough about the discardable/external memory allocators to know how
easy that would be. Is SkPixelRefFactory intended to supersede
SkBitmap::Allocator everywhere going forward?

I'd be happy to leave a FIXME, here or elsewhere, if you'd like. Or we could
file a bug.

     if (!m_bitmap->bitmap().allocPixels(m_allocator, 0))
         return false;