Further compress the text images with zopflipng

Bug:30415666
Test: Graphic tests pass on angler with new image files
Change-Id: I8716f53cb2f9fc6598fdc84f84e9626994faaa5e

26 files changed, 2 insertions, 0 deletions

diff --git a/res-hdpi/images/erasing_text.png b/res-hdpi/images/erasing_text.png
index 6138a4e6..2186c195 100644
--- a/res-hdpi/images/erasing_text.png
+++ b/res-hdpi/images/erasing_text.png
diff --git a/res-hdpi/images/error_text.png b/res-hdpi/images/error_text.png
index 722faaaf..9700f459 100644
--- a/res-hdpi/images/error_text.png
+++ b/res-hdpi/images/error_text.png
diff --git a/res-hdpi/images/installing_security_text.png b/res-hdpi/images/installing_security_text.png
index 20d8ee29..0f605952 100644
--- a/res-hdpi/images/installing_security_text.png
+++ b/res-hdpi/images/installing_security_text.png
diff --git a/res-hdpi/images/installing_text.png b/res-hdpi/images/installing_text.png
index cda9e023..ec8b875a 100644
--- a/res-hdpi/images/installing_text.png
+++ b/res-hdpi/images/installing_text.png
diff --git a/res-hdpi/images/no_command_text.png b/res-hdpi/images/no_command_text.png
index d24f561a..3eddcbbe 100644
--- a/res-hdpi/images/no_command_text.png
+++ b/res-hdpi/images/no_command_text.png
diff --git a/res-mdpi/images/erasing_text.png b/res-mdpi/images/erasing_text.png
index 659d49f8..b0dd3c6d 100644
--- a/res-mdpi/images/erasing_text.png
+++ b/res-mdpi/images/erasing_text.png
diff --git a/res-mdpi/images/error_text.png b/res-mdpi/images/error_text.png
index 42333581..6a47a595 100644
--- a/res-mdpi/images/error_text.png
+++ b/res-mdpi/images/error_text.png
diff --git a/res-mdpi/images/installing_security_text.png b/res-mdpi/images/installing_security_text.png
index cde927a1..14993986 100644
--- a/res-mdpi/images/installing_security_text.png
+++ b/res-mdpi/images/installing_security_text.png
diff --git a/res-mdpi/images/installing_text.png b/res-mdpi/images/installing_text.png
index 6c328570..01e9bfef 100644
--- a/res-mdpi/images/installing_text.png
+++ b/res-mdpi/images/installing_text.png
diff --git a/res-mdpi/images/no_command_text.png b/res-mdpi/images/no_command_text.png
index 0eba5c82..d340df51 100644
--- a/res-mdpi/images/no_command_text.png
+++ b/res-mdpi/images/no_command_text.png
diff --git a/res-xhdpi/images/erasing_text.png b/res-xhdpi/images/erasing_text.png
index 4c5d85d4..2f8b4691 100644
--- a/res-xhdpi/images/erasing_text.png
+++ b/res-xhdpi/images/erasing_text.png
diff --git a/res-xhdpi/images/error_text.png b/res-xhdpi/images/error_text.png
index f1e8c393..ad18851c 100644
--- a/res-xhdpi/images/error_text.png
+++ b/res-xhdpi/images/error_text.png
diff --git a/res-xhdpi/images/installing_security_text.png b/res-xhdpi/images/installing_security_text.png
index a6580c81..acc6a7c2 100644
--- a/res-xhdpi/images/installing_security_text.png
+++ b/res-xhdpi/images/installing_security_text.png
diff --git a/res-xhdpi/images/installing_text.png b/res-xhdpi/images/installing_text.png
index dcfdbb2b..32897d0f 100644
--- a/res-xhdpi/images/installing_text.png
+++ b/res-xhdpi/images/installing_text.png
diff --git a/res-xhdpi/images/no_command_text.png b/res-xhdpi/images/no_command_text.png
index 0c1b2376..eb43c59c 100644
--- a/res-xhdpi/images/no_command_text.png
+++ b/res-xhdpi/images/no_command_text.png
diff --git a/res-xxhdpi/images/erasing_text.png b/res-xxhdpi/images/erasing_text.png
index 56421b6b..8ff2b2fc 100644
--- a/res-xxhdpi/images/erasing_text.png
+++ b/res-xxhdpi/images/erasing_text.png
diff --git a/res-xxhdpi/images/error_text.png b/res-xxhdpi/images/error_text.png
index c121b2f0..658d4ea5 100644
--- a/res-xxhdpi/images/error_text.png
+++ b/res-xxhdpi/images/error_text.png
diff --git a/res-xxhdpi/images/installing_security_text.png b/res-xxhdpi/images/installing_security_text.png
index ecbdaac7..23fcaa44 100644
--- a/res-xxhdpi/images/installing_security_text.png
+++ b/res-xxhdpi/images/installing_security_text.png
diff --git a/res-xxhdpi/images/installing_text.png b/res-xxhdpi/images/installing_text.png
index 93fbe73b..fd8e5846 100644
--- a/res-xxhdpi/images/installing_text.png
+++ b/res-xxhdpi/images/installing_text.png
diff --git a/res-xxhdpi/images/no_command_text.png b/res-xxhdpi/images/no_command_text.png
index 647e1546..23932d6b 100644
--- a/res-xxhdpi/images/no_command_text.png
+++ b/res-xxhdpi/images/no_command_text.png
diff --git a/res-xxxhdpi/images/erasing_text.png b/res-xxxhdpi/images/erasing_text.png
index 853c6b10..03152937 100644
--- a/res-xxxhdpi/images/erasing_text.png
+++ b/res-xxxhdpi/images/erasing_text.png
diff --git a/res-xxxhdpi/images/error_text.png b/res-xxxhdpi/images/error_text.png
index fb18704b..dba127f0 100644
--- a/res-xxxhdpi/images/error_text.png
+++ b/res-xxxhdpi/images/error_text.png
diff --git a/res-xxxhdpi/images/installing_security_text.png b/res-xxxhdpi/images/installing_security_text.png
index 2e911b27..6cdbef48 100644
--- a/res-xxxhdpi/images/installing_security_text.png
+++ b/res-xxxhdpi/images/installing_security_text.png
diff --git a/res-xxxhdpi/images/installing_text.png b/res-xxxhdpi/images/installing_text.png
index cf0f8330..32511a9c 100644
--- a/res-xxxhdpi/images/installing_text.png
+++ b/res-xxxhdpi/images/installing_text.png
diff --git a/res-xxxhdpi/images/no_command_text.png b/res-xxxhdpi/images/no_command_text.png
index 7b71b04f..b6cdd771 100644
--- a/res-xxxhdpi/images/no_command_text.png
+++ b/res-xxxhdpi/images/no_command_text.png
diff --git a/tools/recovery_l10n/README.md b/tools/recovery_l10n/README.md
index bf41ff24..1554f661 100644
--- a/tools/recovery_l10n/README.md
+++ b/tools/recovery_l10n/README.md
@@ -25,6 +25,8 @@
     *   "pngcrush -c 0 ..." converts "text-out.png" into a 1-channel image,
         which is accepted by Recovery. This also compresses the image file by
         ~60%.
+    *   zopflipng could further compress the png files by ~10%, more details
+        in https://github.com/google/zopfli/blob/master/README.zopflipng
     *   If you're using other png compression tools, make sure the final text
         image works by running graphic tests under the recovery mode.