Add file.filesizes to recipe engine core modules.

README.recipes.md

Index: README.recipes.md
diff --git a/README.recipes.md b/README.recipes.md
index 882eee4b11e438fd2042536eadbe2857f22d508b..e712d3467bd046329e815b1854a1df1bbc6bb756 100644
--- a/README.recipes.md
+++ b/README.recipes.md
@@ -265,6 +265,16 @@ Args:
 
 Raises file.Error if the path exists but is not a directory.
 
+— **def [filesizes](/recipe_modules/file/api.py#L227)(self, name, files, test_data=None):**
+
+Returns list of filesizes for the given files.
+
+Args:
+  * name (str) - The name of the step.
+  * files (list[Path]) - Paths to files.
+
+Returns list[int], size of each file in bytes.
+
 — **def [glob\_paths](/recipe_modules/file/api.py#L145)(self, name, source, pattern, test_data=()):**
 
 Performs glob expansion on `pattern`.
@@ -338,7 +348,7 @@ Args:
 
 Raises file.Error.
 
-— **def [rmcontents](/recipe_modules/file/api.py#L244)(self, name, source):**
+— **def [rmcontents](/recipe_modules/file/api.py#L266)(self, name, source):**
 
 Similar to rmtree, but removes only contents not the directory.
 
@@ -353,7 +363,7 @@ Args:
 
 Raises file.Error.
 
-— **def [rmglob](/recipe_modules/file/api.py#L262)(self, name, source, pattern):**
+— **def [rmglob](/recipe_modules/file/api.py#L284)(self, name, source, pattern):**
 
 Removes all entries in `source` matching the glob `pattern`.
 
@@ -366,7 +376,7 @@ Args:
 
 Raises file.Error.
 
-— **def [rmtree](/recipe_modules/file/api.py#L227)(self, name, source):**
+— **def [rmtree](/recipe_modules/file/api.py#L249)(self, name, source):**
 
 Recursively removes a directory.