Fix TextBlobTest valgrind error
Fix TextBlobTest valgrind error

When converting text to glyph IDs, the paint needs to reflect the actual
text encoding.

R=bungeman@google.com,herb@google.com

Review URL: https://codereview.chromium.org/1404153002

qrealka/skia-hc,tmpvar/skia.cc,rubenvb/skia,google/skia,rubenvb/skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,HalCanary/skia-hc,HalCanary/skia-hc,qrealka/skia-hc,qrealka/skia-hc,qrealka/skia-hc,HalCanary/skia-hc,tmpvar/skia.cc,qrealka/skia-hc,google/skia,rubenvb/skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,rubenvb/skia,Hikari-no-Tenshi/android_external_skia,qrealka/skia-hc,google/skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,google/skia,google/skia,tmpvar/skia.cc,rubenvb/skia,tmpvar/skia.cc,google/skia,qrealka/skia-hc,tmpvar/skia.cc,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,rubenvb/skia,google/skia,rubenvb/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,tmpvar/skia.cc,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,google/skia,tmpvar/skia.cc,HalCanary/skia-hc,rubenvb/skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,rubenvb/skia,qrealka/skia-hc,aosp-mirror/platform_external_skia,rubenvb/skia,aosp-mirror/platform_external_skia,tmpvar/skia.cc,google/skia,tmpvar/skia.cc,google/skia