Add infrastructure for testing the debugger code.

gyp/tests.gyp

 # GYP file to build unit tests.
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
     {
       'target_name': 'tests',
       'type': 'executable',
       'include_dirs' : [
@@ skipping 26 matching lines @@
         '../tests/CanvasStateTest.cpp',
         '../tests/ChecksumTest.cpp',
         '../tests/ClampRangeTest.cpp',
         '../tests/ClipCacheTest.cpp',
         '../tests/ClipCubicTest.cpp',
         '../tests/ClipStackTest.cpp',
         '../tests/ClipperTest.cpp',
         '../tests/ColorFilterTest.cpp',
         '../tests/ColorTest.cpp',
         '../tests/DataRefTest.cpp',
+        '../tests/DebugCanvasTest.cpp',
         '../tests/DeferredCanvasTest.cpp',
         '../tests/DequeTest.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',
@@ skipping 80 matching lines @@
 
         # Needed for PipeTest.
         '../src/pipe/utils/SamplePipeControllers.cpp',
       ],
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'flags.gyp:flags',
         'experimental.gyp:experimental',
         'pdf.gyp:pdf',
         'tools.gyp:picture_utils',
+        'debugger.gyp:debugger_lib',
       ],
       'conditions': [
         [ 'skia_gpu == 1', {
           'include_dirs': [
             '../src/gpu',
           ],
         }],
         [ 'skia_os == "nacl"', {
           # CityHash is not supported on NaCl because the NaCl toolchain is
           # missing byteswap.h which is needed by CityHash.
           # TODO(borenet): Find a way to either provide this dependency or
           # replace it.
           'sources!': [
             '../tests/BitmapHasherTest.cpp',
             '../tests/ChecksumTest.cpp',
           ],
         }],
       ],
     },
   ],
 }
 
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