base: Remove the string logging from CHECK().

content/child/blob_storage/blob_transport_controller.cc

Index: content/child/blob_storage/blob_transport_controller.cc
diff --git a/content/child/blob_storage/blob_transport_controller.cc b/content/child/blob_storage/blob_transport_controller.cc
index 1b01792079edee0775759258403c09ecddfb653d..922d01843d5cfe016309bdd3e21fde79932e1fa4 100644
--- a/content/child/blob_storage/blob_transport_controller.cc
+++ b/content/child/blob_storage/blob_transport_controller.cc
@@ -261,14 +261,15 @@ void BlobTransportController::OnMemoryRequest(
             // memory to map the shared memory, which is possible if we don't
             // have much memory. If this scenario happens often, we could delay
             // the response until we have enough memory.  For now we just fail.
-            CHECK(false) << "Unable to map shared memory to send blob " << uuid
-                         << ".";
+            // Unable to map shared memory to send blob |uuid|.
+            CHECK(false);
             return;
           }
           memory = shared_memory.get();
           opened_memory[request.handle_index] = shared_memory.release();
         }
-        CHECK(memory->memory()) << "Couldn't map memory for blob transfer.";
+        // Couldn't map memory for blob transfer.
+        CHECK(memory->memory());
         ReadStatus status = consolidation->ReadMemory(
             request.renderer_item_index, request.renderer_item_offset,
             request.size,