base: Remove the string logging from CHECK().

storage/browser/blob/blob_storage_context.cc

Index: storage/browser/blob/blob_storage_context.cc
diff --git a/storage/browser/blob/blob_storage_context.cc b/storage/browser/blob/blob_storage_context.cc
index acc086e57c04070c32968b932f0dbec5ebc218e8..54a49ed51f71319d7f02cffe24f4c5e46f4834e3 100644
--- a/storage/browser/blob/blob_storage_context.cc
+++ b/storage/browser/blob/blob_storage_context.cc
@@ -367,7 +367,8 @@ BlobStorageContext::BlobSlice::BlobSlice(const BlobEntry& source,
       }
       case DataElement::TYPE_BLOB:
       case DataElement::TYPE_UNKNOWN:
-        CHECK(false) << "Illegal blob item type: " << type;
+        // Illegal blob item type.
+        CHECK(false);
     }
     dest_items.push_back(
         new ShareableBlobDataItem(std::move(data_item), state));
@@ -575,7 +576,8 @@ void BlobStorageContext::CancelBuildingBlob(const std::string& uuid,
 
 void BlobStorageContext::NotifyTransportComplete(const std::string& uuid) {
   BlobEntry* entry = registry_.GetEntry(uuid);
-  CHECK(entry) << "There is no blob entry with uuid " << uuid;
+  // There is no blob entry with uuid |uuid|
+  CHECK(entry);
   DCHECK(BlobStatusIsPending(entry->status()));
   NotifyTransportCompleteInternal(entry);
 }