Move copyright and svn mime check presubmit checks to trigger on commit only.

The commit bot automagically fixes these issues so the devs don't need to fix these problems

TEST=none
BUG=none
R=dpranke@chromium.org

Review URL: http://codereview.chromium.org/6948006

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@84572 0039d316-1c4b-4281-b951-d872f2087c98

presubmit_canned_checks.py

@@ -939,17 +939,21 @@ def PanProjectChecks(input_api, output_api,
   snapshot("checking eol style")
   results.extend(input_api.canned_checks.CheckChangeSvnEolStyle(
       input_api, output_api, source_file_filter=text_files))
-  snapshot("checking svn mime types")
-  results.extend(input_api.canned_checks.CheckSvnForCommonMimeTypes(
-      input_api, output_api))
-  snapshot("checking license")
-  results.extend(input_api.canned_checks.CheckLicense(
-      input_api, output_api, license_header, source_file_filter=sources))
   snapshot("checking nsobjects")
   results.extend(_CheckConstNSObject(
       input_api, output_api, source_file_filter=sources))
   snapshot("checking singletons")
   results.extend(_CheckSingletonInHeaders(
       input_api, output_api, source_file_filter=sources))
+
+  # The following checks are only done on commit, since the commit bot will
+  # auto-fix most of these.
+  if input_api.is_committing:
+    snapshot("checking svn mime types")
+    results.extend(input_api.canned_checks.CheckSvnForCommonMimeTypes(
+        input_api, output_api))
+    snapshot("checking license")
+    results.extend(input_api.canned_checks.CheckLicense(
+        input_api, output_api, license_header, source_file_filter=sources))
   snapshot("done")
   return results