More regular Platform implementations in unit tests (reland.)

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

Index: third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp
diff --git a/third_party/WebKit/Source/platform/TestingPlatformSupport.cpp b/third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp
similarity index 91%
rename from third_party/WebKit/Source/platform/TestingPlatformSupport.cpp
rename to third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp
index fcb4dbb73b56feb99c3894e35c66a3870fbe5dd0..8939238558d0126bfd7e67c947a3121292177429 100644
--- a/third_party/WebKit/Source/platform/TestingPlatformSupport.cpp
+++ b/third_party/WebKit/Source/platform/testing/TestingPlatformSupport.cpp
@@ -30,7 +30,7 @@
 
 #include "config.h"
 
-#include "platform/TestingPlatformSupport.h"
+#include "platform/testing/TestingPlatformSupport.h"
 
 namespace blink {
 
@@ -69,6 +69,11 @@ WebMemoryAllocatorDump* TestingDiscardableMemory::createMemoryAllocatorDump(cons
     return nullptr;
 }
 
+TestingPlatformSupport::TestingPlatformSupport()
+    : TestingPlatformSupport(TestingPlatformSupport::Config())
+{
+}
+
 TestingPlatformSupport::TestingPlatformSupport(const Config& config)
     : m_config(config)
     , m_oldPlatform(Platform::current())
@@ -107,4 +112,9 @@ WebCompositorSupport* TestingPlatformSupport::compositorSupport()
     return m_config.compositorSupport;
 }
 
+WebThread* TestingPlatformSupport::currentThread()
+{
+    return m_oldPlatform ? m_oldPlatform->currentThread() : nullptr;
+}
+
 } // namespace blink