Add mojo interface to load hyphenation dictionaries on Android

third_party/WebKit/public/platform/modules/hyphenation/hyphenation.mojom

Index: third_party/WebKit/public/platform/modules/hyphenation/hyphenation.mojom
diff --git a/third_party/WebKit/public/platform/mime_registry.mojom b/third_party/WebKit/public/platform/modules/hyphenation/hyphenation.mojom
similarity index 51%
copy from third_party/WebKit/public/platform/mime_registry.mojom
copy to third_party/WebKit/public/platform/modules/hyphenation/hyphenation.mojom
index dbd258295723c3b23462f09c934c3cc35797aa58..65c3d3c830d3b838b03980396ae4c620a394673c 100644
--- a/third_party/WebKit/public/platform/mime_registry.mojom
+++ b/third_party/WebKit/public/platform/modules/hyphenation/hyphenation.mojom
@@ -4,7 +4,9 @@
 
 module blink.mojom;
 
-interface MimeRegistry {
+// Loads hyphenation dictionary.
+interface Hyphenation {
+  // Returns a handle to the raw hyphneation dictionary.
   [Sync]
-  GetMimeTypeFromExtension(string extension) => (string mime_type);
+  OpenDictionary(string locale) => (handle? hyphenation_dictionary_handle);

[dcheng, 2016/07/13 02:56:29]

Do we need the ? It seems like we always pass back a handle (even if it's
sometimes invalid). Basically, I'm not sure what ? means when you use it with a
handle =)

[kojii, 2016/07/13 05:02:29]

mojo runtime checks "handle.IsValid()" if "handle". This method returns invalid
handle when the dictionary is not found for the locale, and "handle?" solved it
for me. Is there better solution?

 };