Update thumbnail md5s for new Mali drop

test-fps25.h264 and vp8 thumbnail md5s were different than ARM-Exynos
from 9033.0.0 due to new Mali drop. Updated md5s for those.

Also update vp9 md5 for RK3399.

BUG=670160
TEST=test on Minnie and Kevin for
Thumbnail/VideoDecodeAcceleratorParamTest.TestSimpleDecode/0

Review-Url: https://codereview.chromium.org/2553653002
Cr-Commit-Position: refs/heads/master@{#437835}

media/test/data/test-25fps.h264.md5

@@ -10,8 +10,8 @@ d16d0662406b9d4ebb413ed3da3896e0
 5f697b015b7af0afa7ff202905f748fa
 # Intel - Sandy Bridge - X11
 07bac7ad907bcb75004324645637a06c
-# ARM - Exynos
-04436cf1cf06b4bb6c1efd838e68257d
+# ARM - Mali
+82c979d493a00ee2188f7259230a8de9
 # ARM - Tegra
 b55cda7d10c37104d8c49d27c2699e40
 # ARM - MediaTek

media/test/data/test-25fps.vp8.md5

-# ARM - Exynos
-10144053d714f6429efd266710513584
+# ARM - Mali
+6012551634f90fb4bd59f871fff904f4
 # ARM - Tegra
 cd355b553ce7660283c52675232e9227
 # ARM - MediaTek

media/test/data/test-25fps.vp9.md5

@@ -2,6 +2,8 @@
 7daba42a115da37a463edc2fa6d2ab8e
 # ARM - MediaTek
 230eea56e171984e9da376bc267d0a62
+# ARM - RK3399
+82647609e45a19f8e22fd1880a9edf3d
 
 # Intel - Haswell
 9dc9c009b062f98691a6151e322c7df2