Add Android fonts to blimp engine

blimp/docs/fonts.md

Index: blimp/docs/fonts.md
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+# Updating Blimp Fonts
+
+1.  Clone the git-repositories listed in
+    `//third_party/blimp_fonts/README.chromium`, and roll forward to the commit
+    you want.
+1.  Copy the necessary files to `//third_party/blimp_fonts/font_bundle`.
+1.  Verify that the `fonts.xml` file include the correct fonts.
+1.  Verify that the `LICENSE` file is still up to date and lists all relevant
+    licenses and which fonts use which license.
+1.  Update the `//third_party/blimp_fonts` target to include all the
+    current fonts and their license files.
+1.  Update the engine dependencies using
+    `//blimp/tools/generate-engine-manifest.py`. This step is documented in
+    `//blimp/docs/container.md`.
+1.  Run the `upload_to_google_storage.py` (from depot_tools) script to upload
+    the files. You must do this in the `//third_party/blimp_fonts` directory.
+    To do this, execute:
+
+    ```bash
+    upload_to_google_storage.py --archive -b chromium-fonts font_bundle
+    ```
+
+1.  Add all the `font_bundle.tar.gz.sha1` file to the chromium src repository,
+    by executing the following command:
+
+    ```bash
+    git add ./third_party/blimp_fonts/font_bundle.tar.gz.sha1
+    ```
+
+1.  Commit and upload the change for review:
+
+    ```bash
+    git commit
+    git cl upload
+    ```