Revert of choose better mip level

Revert of choose better mip level (patchset #2 id:20001 of https://codereview.chromium.org/845793005/)

Reason for revert:
need more suppressions

Original issue's description:
> choose better mip level
> 
> BUG=skia:
> 
> Committed: https://skia.googlesource.com/skia/+/09544fcf9611be6efc0c38ab9d9a3f82181341fb

TBR=robertphillips@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

[reed1, 2015-01-15 16:24:04]

Created Revert of choose better mip level

[commit-bot: I haz the power, 2015-01-15 16:24:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/812993008/1

[commit-bot: I haz the power, 2015-01-15 16:24:47]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-01-15 16:24:48]

Failed to apply patch for expectations/gm/ignored-tests.txt:
While running git apply --index -3 -p1;
  error: patch failed: expectations/gm/ignored-tests.txt:40
  Falling back to three-way merge...
  Applied patch to 'expectations/gm/ignored-tests.txt' with conflicts.
  U expectations/gm/ignored-tests.txt

Patch:       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
c5ff2831c2b11581af09229dc215fe39bbc691f5..e692860c948c0a641d84fb25e3ed91914736e2f5
100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -40,9 +40,3 @@
 # New shadow only option in SkDropShadowImageFilter
 dropshadowimagefilter
 
-# reed - rebase after mipmap level improvement
-downsamplebitmap_image_medium_mandrill_512
-downsamplebitmap_image_medium_mandrill_132x132_12x12
-downsamplebitmap_checkerboard_medium_512_256
-downsamplebitmap_text_medium_72.00pt
-filterindiabox