Make image scaling have floating point scales. Third attempt to land this

expectations/gm/ignored-tests.txt

Index: expectations/gm/ignored-tests.txt
diff --git a/expectations/gm/ignored-tests.txt b/expectations/gm/ignored-tests.txt
index d4cbff0167613be0d12c6b24961c36d89440f0ad..6fc1fe53e158d1ac7dd12ae88a9e556d8165076e 100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -38,6 +38,35 @@
 # I will likely just delete the GM.
 canvas-layer-state
 
+# humper: https://codereview.chromium.org/300113008/
+# Needs rebaselining after image scaling tweak
+filterbitmap_image_mandrill_256
+filterbitmap_checkerboard_192_192
+downsamplebitmap_image_high_mandrill_512
+downsamplebitmap_text_high_72.00pt
+filterbitmap_text_7.00pt
+filterbitmap_image_mandrill_128
+filterbitmap_image_mandrill_64
+filterbitmap_image_mandrill_32
+filterbitmap_checkerboard_32_32
+filterbitmap_checkerboard_32_8
+downsamplebitmap_checkerboard_high_512_256
+filterbitmap_image_mandrill_16
+filterbitmap_text_3.00pt
+filterbitmap_checkerboard_32_2
+filterbitmap_checkerboard_4_4
+
+# bsalomon: https://codereview.chromium.org/264303008/
+# bsalomon@ will rebaseline this test
+ninepatch-stretch
+
+# bsalomon: https://codereview.chromium.org/282293004/
+# Conditionally fallback from bicubic filtering based on matrix.
+downsamplebitmap_checkerboard_high_512_256
+downsamplebitmap_image_high_mandrill_512.png
+filterbitmap_checkerboard_192_192
+downsamplebitmap_text_high_72.00pt
+
 # These are part of picture-version 27 -- removal of SkUnitMapp
 # just need to be rebaselined
 scaled_tilemode_bitmap