Add task location information to ExecutionContext

Source/modules/webdatabase/DatabaseTracker.cpp

Index: Source/modules/webdatabase/DatabaseTracker.cpp
diff --git a/Source/modules/webdatabase/DatabaseTracker.cpp b/Source/modules/webdatabase/DatabaseTracker.cpp
index ef66e99485eb54407f7e7a2c8e20c6a8a77f3365..9df8c08842d606d07e7c698cc31322321f468403 100644
--- a/Source/modules/webdatabase/DatabaseTracker.cpp
+++ b/Source/modules/webdatabase/DatabaseTracker.cpp
@@ -43,6 +43,7 @@
 #include "platform/weborigin/SecurityOriginHash.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebDatabaseObserver.h"
+#include "public/platform/WebTraceLocation.h"
 #include "wtf/Assertions.h"
 #include "wtf/StdLibExtras.h"
 
@@ -161,7 +162,7 @@ void DatabaseTracker::removeOpenDatabase(Database* database)
 
     ExecutionContext* executionContext = database->databaseContext()->executionContext();
     if (!executionContext->isContextThread())
-        executionContext->postTask(NotifyDatabaseObserverOnCloseTask::create(database));
+        executionContext->postTask(FROM_HERE, NotifyDatabaseObserverOnCloseTask::create(database));
     else
         databaseClosed(database);
 }
@@ -182,7 +183,7 @@ void DatabaseTracker::failedToOpenDatabase(Database* database)
 {
     ExecutionContext* executionContext = database->databaseContext()->executionContext();
     if (!executionContext->isContextThread())
-        executionContext->postTask(NotifyDatabaseObserverOnCloseTask::create(database));
+        executionContext->postTask(FROM_HERE, NotifyDatabaseObserverOnCloseTask::create(database));
     else
         databaseClosed(database);
 }
@@ -238,7 +239,7 @@ void DatabaseTracker::closeDatabasesImmediately(const String& originIdentifier,
 
     // We have to call closeImmediately() on the context thread.
     for (DatabaseSet::iterator it = databaseSet->begin(); it != databaseSet->end(); ++it)
-        (*it)->databaseContext()->executionContext()->postTask(CloseOneDatabaseImmediatelyTask::create(originIdentifier, name, *it));
+        (*it)->databaseContext()->executionContext()->postTask(FROM_HERE, CloseOneDatabaseImmediatelyTask::create(originIdentifier, name, *it));
 }
 
 void DatabaseTracker::closeOneDatabaseImmediately(const String& originIdentifier, const String& name, Database* database)