cc: Switch to Chromium DCHECKs and LOGs

cc/PRESUBMIT.py

Index: cc/PRESUBMIT.py
diff --git a/cc/PRESUBMIT.py b/cc/PRESUBMIT.py
index 060890112f93e9b8b250dbfb5ef3005104b15501..e0346a6f07bed2af641402a6d4ed90aeef999a51 100644
--- a/cc/PRESUBMIT.py
+++ b/cc/PRESUBMIT.py
@@ -8,6 +8,44 @@ See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
 details on the presubmit API built into gcl.
 """
 
+import re
+
+CC_SOURCE_FILES=(r'^cc/.*\.(cc|h)$',)
+
+def CheckDChecks(input_api, output_api, white_list=CC_SOURCE_FILES, black_list=None):
+  black_list = tuple(black_list or input_api.DEFAULT_BLACK_LIST)
+  source_file_filter = lambda x: input_api.FilterSourceFile(x, white_list, black_list)
+
+  dcheck_files = []
+  assert_files = []
+
+  for f in input_api.AffectedSourceFiles(source_file_filter):
+    contents = input_api.ReadFile(f, 'rb')
+    # Bare DCHECK() is not allowed.
+    if re.search(r"(?<!CC_)DCHECK\(", contents):
+      # The dcheck header is an exception to this rule.
+      if f.LocalPath() == 'cc/dcheck.h':
+        continue
+      dcheck_files.append(f.LocalPath())
+    # WebKit ASSERT() is not allowed.
+    if re.search(r"ASSERT\(", contents):
+      assert_files.append(f.LocalPath())
+
+  if dcheck_files:
+    return [output_api.PresubmitError(
+      'These files use DCHECK instead of using CC_DCHECK:',
+      items=dcheck_files)]
+  if assert_files:
+    return [output_api.PresubmitError(
+      'These files use ASSERT instead of using CC_DCHECK:',
+      items=assert_files)]
+  return []
+
+def CheckChangeOnUpload(input_api, output_api):
+  results = []
+  results += CheckDChecks(input_api, output_api)
+  return results
+
 def GetPreferredTrySlaves(project, change):
   return [
     'linux_layout_rel',