Rename test files to end with Test.cpp.

gyp/tests.gypi

 {
   'include_dirs': [
     '../src/core',
     '../src/effects',
     '../src/image',
     '../src/lazy',
     '../src/images',
     '../src/pathops',
     '../src/pdf',
     '../src/pipe/utils',
@@ skipping 40 matching lines @@
     '../tests/ClipCubicTest.cpp',
     '../tests/ClipStackTest.cpp',
     '../tests/ClipperTest.cpp',
     '../tests/ColorFilterTest.cpp',
     '../tests/ColorPrivTest.cpp',
     '../tests/ColorTest.cpp',
     '../tests/DataRefTest.cpp',
     '../tests/DeferredCanvasTest.cpp',
     '../tests/DequeTest.cpp',
     '../tests/DeviceLooperTest.cpp',
-    '../tests/DiscardableMemoryPool.cpp',
+    '../tests/DiscardableMemoryPoolTest.cpp',
     '../tests/DiscardableMemoryTest.cpp',
     '../tests/DocumentTest.cpp',
     '../tests/DrawBitmapRectTest.cpp',
     '../tests/DrawPathTest.cpp',
     '../tests/DrawTextTest.cpp',
     '../tests/DynamicHashTest.cpp',
     '../tests/EmptyPathTest.cpp',
     '../tests/ErrorTest.cpp',
     '../tests/FillPathTest.cpp',
     '../tests/FitsInTest.cpp',
     '../tests/FlatDataTest.cpp',
     '../tests/FlateTest.cpp',
     '../tests/FontHostStreamTest.cpp',
     '../tests/FontHostTest.cpp',
     '../tests/FontMgrTest.cpp',
     '../tests/FontNamesTest.cpp',
     '../tests/FrontBufferedStreamTest.cpp',
-    '../tests/GLInterfaceValidation.cpp',
+    '../tests/GLInterfaceValidationTest.cpp',
     '../tests/GLProgramsTest.cpp',
     '../tests/GeometryTest.cpp',
     '../tests/GifTest.cpp',
     '../tests/GpuBitmapCopyTest.cpp',
     '../tests/GpuColorFilterTest.cpp',
     '../tests/GpuDrawPathTest.cpp',
     '../tests/GrBinHashKeyTest.cpp',
     '../tests/GrContextFactoryTest.cpp',
     '../tests/GrDrawTargetTest.cpp',
     '../tests/GrMemoryPoolTest.cpp',
@@ skipping 57 matching lines @@
     '../tests/SortTest.cpp',
     '../tests/SrcOverTest.cpp',
     '../tests/StreamTest.cpp',
     '../tests/StringTest.cpp',
     '../tests/StrokeTest.cpp',
     '../tests/SurfaceTest.cpp',
     '../tests/TLSTest.cpp',
     '../tests/TSetTest.cpp',
     '../tests/TestSize.cpp',
     '../tests/TileGridTest.cpp',
-    '../tests/ToUnicode.cpp',
+    '../tests/ToUnicodeTest.cpp',
     '../tests/TracingTest.cpp',
-    '../tests/Typeface.cpp',
+    '../tests/TypefaceTest.cpp',
     '../tests/UnicodeTest.cpp',
     '../tests/UnitTestTest.cpp',
     '../tests/UtilsTest.cpp',
     '../tests/WArrayTest.cpp',
     '../tests/WritePixelsTest.cpp',
     '../tests/Writer32Test.cpp',
     '../tests/XfermodeTest.cpp',
 
     '../tests/MatrixClipCollapseTest.cpp',
     '../src/utils/debugger/SkDrawCommand.h',
     '../src/utils/debugger/SkDrawCommand.cpp',
     '../src/utils/debugger/SkDebugCanvas.h',
     '../src/utils/debugger/SkDebugCanvas.cpp',
     '../src/utils/debugger/SkObjectParser.h',
     '../src/utils/debugger/SkObjectParser.cpp',
 
     '../tests/PipeTest.cpp',
     '../src/pipe/utils/SamplePipeControllers.cpp',
 
     '../tests/TDStackNesterTest.cpp',
     '../experimental/PdfViewer/src/SkTDStackNester.h',
   ],
 }