Forbid Oilpan GC in blink::testing::runPendingTasks

third_party/WebKit/Source/platform/testing/UnitTestHelpers.cpp

Index: third_party/WebKit/Source/platform/testing/UnitTestHelpers.cpp
diff --git a/third_party/WebKit/Source/platform/testing/UnitTestHelpers.cpp b/third_party/WebKit/Source/platform/testing/UnitTestHelpers.cpp
index 4c4909b3c16c89b6ba6ec61e9ba12b2b6f8162be..d66bc310ce619cf0584c7e5c09bac75319970434 100644
--- a/third_party/WebKit/Source/platform/testing/UnitTestHelpers.cpp
+++ b/third_party/WebKit/Source/platform/testing/UnitTestHelpers.cpp
@@ -31,6 +31,7 @@
 #include "base/path_service.h"
 #include "platform/SharedBuffer.h"
 #include "platform/Timer.h"
+#include "platform/heap/Handle.h"
 #include "public/platform/FilePathConversion.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebString.h"
@@ -45,7 +46,12 @@ namespace testing {
 void runPendingTasks()
 {
     Platform::current()->currentThread()->getWebTaskRunner()->postTask(BLINK_FROM_HERE, bind(&exitRunLoop));
+
+    // We forbid GC in the tasks. Otherwise the registered GCTaskObserver tries
+    // to run GC with NoHeapPointerOnStack.
+    ThreadState::current()->enterGCForbiddenScope();
     enterRunLoop();
+    ThreadState::current()->leaveGCForbiddenScope();
 }
 
 void runDelayedTasks(double delayMs)