More regular Platform implementations in unit tests (reland.)

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

Index: third_party/WebKit/Source/platform/testing/TestingPlatformSupport.h
diff --git a/third_party/WebKit/Source/platform/TestingPlatformSupport.h b/third_party/WebKit/Source/platform/testing/TestingPlatformSupport.h
similarity index 94%
rename from third_party/WebKit/Source/platform/TestingPlatformSupport.h
rename to third_party/WebKit/Source/platform/testing/TestingPlatformSupport.h
index cdb74e3ef41ef46ab0f73336a7d8905cdc151c3d..e1d5a49e99ef0cc7274c505612f7756634d7a713 100644
--- a/third_party/WebKit/Source/platform/TestingPlatformSupport.h
+++ b/third_party/WebKit/Source/platform/testing/TestingPlatformSupport.h
@@ -31,12 +31,16 @@
 #ifndef TestingPlatformSupport_h
 #define TestingPlatformSupport_h
 
+#include "platform/PlatformExport.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebDiscardableMemory.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
+class WebCompositorSupport;
+class WebThread;
+
 class TestingDiscardableMemory : public WebDiscardableMemory {
 public:
     explicit TestingDiscardableMemory(size_t);
@@ -64,6 +68,7 @@ public:
         WebCompositorSupport* compositorSupport;
     };
 
+    TestingPlatformSupport();
     explicit TestingPlatformSupport(const Config&);
 
     ~TestingPlatformSupport() override;
@@ -74,8 +79,9 @@ public:
     const unsigned char* getTraceCategoryEnabledFlag(const char* categoryName) override;
     WebString defaultLocale() override;
     WebCompositorSupport* compositorSupport() override;
+    WebThread* currentThread() override;
 
-private:
+protected:
     const Config m_config;
     Platform* const m_oldPlatform;
 };