Add test harness for matrix/clip state collapsing

gyp/tests.gyp

 # GYP file to build unit tests.
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
     {
       'target_name': 'tests',
       'type': 'executable',
       'include_dirs' : [
         '../src/core',
         '../src/effects',
         '../src/image',
         '../src/lazy',
         '../src/images',
         '../src/pathops',
         '../src/pdf',
         '../src/pipe/utils',
         '../src/utils',
+        '../src/utils/debugger',
         '../tools/',
 
         # Needed for TDStackNesterTest.
         '../experimental/PdfViewer',
         '../experimental/PdfViewer/src',
       ],
       'includes': [
         'pathops_unittest.gypi',
       ],
       'sources': [
@@ skipping 65 matching lines @@
         '../tests/ImageDecodingTest.cpp',
         '../tests/ImageFilterTest.cpp',
         '../tests/InfRectTest.cpp',
         '../tests/JpegTest.cpp',
         '../tests/LListTest.cpp',
         '../tests/LayerDrawLooperTest.cpp',
         '../tests/MD5Test.cpp',
         '../tests/MallocPixelRefTest.cpp',
         '../tests/MathTest.cpp',
         '../tests/Matrix44Test.cpp',
+        '../tests/MatrixClipCollapseTest.cpp',
         '../tests/MatrixTest.cpp',
         '../tests/MemoryTest.cpp',
         '../tests/MemsetTest.cpp',
         '../tests/MessageBusTest.cpp',
         '../tests/MetaDataTest.cpp',
         '../tests/MipMapTest.cpp',
         '../tests/OSPathTest.cpp',
         '../tests/OnceTest.cpp',
         '../tests/PDFPrimitivesTest.cpp',
         '../tests/PackBitsTest.cpp',
@@ skipping 49 matching lines @@
         '../tests/WritePixelsTest.cpp',
         '../tests/Writer32Test.cpp',
         '../tests/XfermodeTest.cpp',
         '../tests/skia_test.cpp',
 
         '../experimental/PdfViewer/src/SkTDStackNester.h',
         '../tests/TDStackNesterTest.cpp',
 
         # Needed for PipeTest.
         '../src/pipe/utils/SamplePipeControllers.cpp',
+
+        # Needed for MatrixClipCollapse test.
+        '../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',
       ],
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'flags.gyp:flags',
         'experimental.gyp:experimental',
         'pdf.gyp:pdf',
         'tools.gyp:picture_utils',
       ],
       'conditions': [
         [ 'skia_gpu == 1', {
           'include_dirs': [
             '../src/gpu',
           ],
         }],
       ],
     },
   ],
 }