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..c0ad2b9df3a6b20df61d7c22d5c826d34cb8e6f8 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;

[Primiano Tucci (use gerrit), 2015/04/29 17:45:11]

Hmm this will destroy the messageloop after the ctor.
It will probably work for your purpose (you'll still get a taskrunner handle)
but if somebody in future will try to post tasks to the ML they will get dropped
on the floor because the ML has ended.
You want this to be a field of the class.

[Sami, 2015/04/29 17:48:23]

Ah, sorry for not picking up on this. In my head we were entering a nested
message loop at the bottom of this function, which isn't the case.

 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool autorelease_pool;
 #endif
@@ -55,11 +57,9 @@ TestBlinkWebUnitTestSupport::TestBlinkWebUnitTestSupport() {
   gin::V8Initializer::LoadV8Snapshot();
 #endif
 
-  if (base::MessageLoopProxy::current()) {
-    renderer_scheduler_ = scheduler::RendererScheduler::Create();
-    web_thread_.reset(new scheduler::WebThreadImplForRendererScheduler(
-        renderer_scheduler_.get()));
-  }
+  renderer_scheduler_ = scheduler::RendererScheduler::Create();
+  web_thread_.reset(new scheduler::WebThreadImplForRendererScheduler(
+      renderer_scheduler_.get()));
 
   blink::initialize(this);
   blink::setLayoutTestMode(true);