Implement HW Bitmap for Skia pipeline

Implement HW Bitmap for Skia pipeline. Use new Skia
SkImage::MakeFromAHardwareBuffer API, which will enable to
record HW Bitmap into a picture. Move logic that uploads
SkBitmap into a GraphicBuffer into pipeline specific classes.

Test: All CTS and other tests pass for HWUI pipleine. For Skia
pipeline graphics CTS tests pass, 2 UIRendering CTS tests which
excise HW bitmaps with color spaces fail, bitmapShaderEglImage
macrobench fails (to be fixed by a CL in Skia), HWUI unit tests
pass, no EGL leaks found.

Change-Id: Id5926d7cccd81af8b55400f44fb524a427543d05
diff --git a/libs/hwui/pipeline/skia/SkiaPipeline.cpp b/libs/hwui/pipeline/skia/SkiaPipeline.cpp
index 75f1adc..88293db 100644
--- a/libs/hwui/pipeline/skia/SkiaPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaPipeline.cpp
@@ -159,11 +159,11 @@
     GrContext* context = thread.getGrContext();
     if (context) {
         ATRACE_FORMAT("Bitmap#prepareToDraw %dx%d", bitmap->width(), bitmap->height());
-        SkBitmap skiaBitmap;
-        bitmap->getSkBitmap(&skiaBitmap);
-        sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(skiaBitmap, kNever_SkCopyPixelsMode);
-        SkImage_pinAsTexture(image.get(), context);
-        SkImage_unpinAsTexture(image.get(), context);
+        auto image = bitmap->makeImage();
+        if (image.get() && !bitmap->isHardware()) {
+            SkImage_pinAsTexture(image.get(), context);
+            SkImage_unpinAsTexture(image.get(), context);
+        }
     }
 }