presubmit: update CheckPatchFormatted to pass --input_diff_file

Once devs update depot_tools, this will take effect in both
terminal and CiderG

TESTED: http://go/scrcast/NjM1MzE5NDc4NjQ4ODMyMHxmMzc3NGVlZi03Yg
Bug: 386840832
Change-Id: Ibb8f74bffd662eb330f61b9e82bcd75c09bbc232
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/6937365
Commit-Queue: Scott Lee <ddoman@chromium.org>
Reviewed-by: Gavin Mak <gavinmak@google.com>

presubmit_canned_checks.py

@@ -1838,6 +1838,10 @@ def CheckPatchFormatted(input_api,
                         result_factory=None):
     result_factory = result_factory or output_api.PresubmitPromptWarning
     import git_cl
+    affected_files = input_api.AffectedFiles(include_deletes=False)
+    with input_api.CreateTemporaryFile() as diff_file:
+        for f in affected_files:
+            diff_file.write(f.GenerateScmDiff().encode('utf-8'))
 
     display_args = []
     if not check_clang_format:
@@ -1857,8 +1861,13 @@ def CheckPatchFormatted(input_api,
 
     cmd = [
         '-C',
-        input_api.change.RepositoryRoot(), 'cl', 'format', '--dry-run',
-        '--presubmit'
+        input_api.change.RepositoryRoot(),
+        'cl',
+        'format',
+        '--dry-run',
+        '--presubmit',
+        '--input_diff_file',
+        diff_file.name,
     ] + display_args
 
     # Make sure the passed --upstream branch is applied to a dry run.
@@ -1885,11 +1894,13 @@ def CheckPatchFormatted(input_api,
         else:
             short_path = input_api.basename(input_api.change.RepositoryRoot())
         display_args.append(presubmit_subdir)
-        return [
-            result_factory('The %s directory requires source formatting. '
-                           'Please run: git cl format %s' %
-                           (short_path, ' '.join(display_args)))
-        ]
+        msg = (
+            'The %s directory requires source formatting. '
+            'Please run: git cl format %s. Or, if you are in CiderG, '
+            'please use the "Format Modified Lines in All Files '
+            '(git cl format)" functionality in the command palette.' % (
+                short_path, ' '.join(display_args)))
+        return [result_factory(msg)]
     return []