Support content scheme uri for Chrome on Android

base/android/content_uri_utils.h

Index: base/android/content_uri_utils.h
diff --git a/base/android/content_uri_utils.h b/base/android/content_uri_utils.h
index 827ec92fa393c3cf58bb569b0bfcd5d6fb470775..020d9c6033a784469940f06e64a083e31b23c2ff 100644
--- a/base/android/content_uri_utils.h
+++ b/base/android/content_uri_utils.h
@@ -23,6 +23,10 @@ BASE_EXPORT File OpenContentUriForRead(const FilePath& content_uri);
 // Check whether a content uri exists.
 BASE_EXPORT bool ContentUriExists(const FilePath& content_uri);
 
+// Gets mime type from a content uri. Returns an empty string if the uri is

[palmer, 2014/11/19 00:23:54]

Nit: Uppercase for acronyms ("MIME", "URI", et c).

[qinmin, 2014/11/19 02:13:07]

Done.

+// invalid.
+BASE_EXPORT std::string GetContentUriMimeType(const FilePath& content_uri);
+
 }  // namespace base
 
 #endif  // BASE_ANDROID_CONTENT_URI_UTILS_H_