Adding v8_isolate_memory_dump_provider.

content/test/test_blink_web_unit_test_support.cc

Index: content/test/test_blink_web_unit_test_support.cc
diff --git a/content/test/test_blink_web_unit_test_support.cc b/content/test/test_blink_web_unit_test_support.cc
index 07f53ea70a7ed2f66459fba7fd648072612a2d71..a0699a6ec622b9b12a0db4fac3e64cb87f905e02 100644
--- a/content/test/test_blink_web_unit_test_support.cc
+++ b/content/test/test_blink_web_unit_test_support.cc
@@ -7,6 +7,7 @@
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
+#include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/scheduler/renderer/renderer_scheduler.h"
@@ -44,6 +45,7 @@
 namespace content {
 
 TestBlinkWebUnitTestSupport::TestBlinkWebUnitTestSupport() {
+  base::MessageLoop message_loop;
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool autorelease_pool;
 #endif