Add mojo interface to load hyphenation dictionaries on Android

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index cdefdd1a8ecd9d239aef8e77a78b93cb3db7d44b..4cc93f1c9dd8f92db1b83dd19244c0db48afa30f 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -571,6 +571,9 @@
       # SpellCheckerSession on Android.
       'use_browser_spellchecker%': 0,
 
+      # Use Minikin hyphenation engine.
+      'use_minikin_hyphenation%': 0,
+
       # Webrtc compilation is enabled by default. Set to 0 to disable.
       'enable_webrtc%': 1,
 
@@ -826,6 +829,11 @@
           'use_browser_spellchecker%': 1,
         }],
 
+        # Android has hyphenation dictionaries for Minikin to use.
+        ['OS=="android"', {
+          'use_minikin_hyphenation%': 1,
+        }],
+
         # Enables proprietary codecs and demuxers; e.g. H264, AAC, MP3, and MP4.
         # We always build Google Chrome and Chromecast with proprietary codecs.
         ['branding=="Chrome" or chromecast==1', {
@@ -1226,6 +1234,7 @@
     'enable_print_preview%': '<(enable_print_preview)',
     'enable_spellcheck%': '<(enable_spellcheck)',
     'use_browser_spellchecker%': '<(use_browser_spellchecker)',
+    'use_minikin_hyphenation%': '<(use_minikin_hyphenation)',
     'cld2_table_size%': '<(cld2_table_size)',
     'enable_captive_portal_detection%': '<(enable_captive_portal_detection)',
     'disable_file_support%': '<(disable_file_support)',
@@ -2941,6 +2950,9 @@
       ['use_browser_spellchecker', {
         'defines': ['USE_BROWSER_SPELLCHECKER=1'],
       }],
+      ['use_minikin_hyphenation', {
+        'defines': ['USE_MINIKIN_HYPHENATION=1'],
+      }],
       ['enable_captive_portal_detection==1', {
         'defines': ['ENABLE_CAPTIVE_PORTAL_DETECTION=1'],
       }],