Merge GrGpuObject and GrCacheable.

gyp/gpu.gypi

 # Include this gypi to include all 'gpu' files
 # The parent gyp/gypi file must define
 #       'skia_src_path'     e.g. skia/trunk/src
 #       'skia_include_path' e.g. skia/trunk/include
 #
 # The skia build defines these in common_variables.gypi
 #
 {
   'variables': {
     'skgpu_sources': [
       '<(skia_include_path)/gpu/GrBackendEffectFactory.h',
-      '<(skia_include_path)/gpu/GrCacheable.h',
       '<(skia_include_path)/gpu/GrClipData.h',
       '<(skia_include_path)/gpu/GrColor.h',
       '<(skia_include_path)/gpu/GrConfig.h',
       '<(skia_include_path)/gpu/GrContext.h',
       '<(skia_include_path)/gpu/GrContextFactory.h',
       '<(skia_include_path)/gpu/GrCoordTransform.h',
       '<(skia_include_path)/gpu/GrEffect.h',
       '<(skia_include_path)/gpu/GrEffectStage.h',
       '<(skia_include_path)/gpu/GrEffectUnitTest.h',
       '<(skia_include_path)/gpu/GrFontScaler.h',
@@ skipping 27 matching lines @@
       '<(skia_src_path)/gpu/GrAllocPool.cpp',
       '<(skia_src_path)/gpu/GrAtlas.cpp',
       '<(skia_src_path)/gpu/GrAtlas.h',
       '<(skia_src_path)/gpu/GrBinHashKey.h',
       '<(skia_src_path)/gpu/GrBitmapTextContext.cpp',
       '<(skia_src_path)/gpu/GrBitmapTextContext.h',
       '<(skia_src_path)/gpu/GrBlend.cpp',
       '<(skia_src_path)/gpu/GrBlend.h',
       '<(skia_src_path)/gpu/GrBufferAllocPool.cpp',
       '<(skia_src_path)/gpu/GrBufferAllocPool.h',
-      '<(skia_src_path)/gpu/GrCacheable.cpp',
       '<(skia_src_path)/gpu/GrCacheID.cpp',
       '<(skia_src_path)/gpu/GrClipData.cpp',
       '<(skia_src_path)/gpu/GrClipMaskCache.h',
       '<(skia_src_path)/gpu/GrClipMaskCache.cpp',
       '<(skia_src_path)/gpu/GrClipMaskManager.h',
       '<(skia_src_path)/gpu/GrClipMaskManager.cpp',
       '<(skia_src_path)/gpu/GrContext.cpp',
       '<(skia_src_path)/gpu/GrDefaultPathRenderer.cpp',
       '<(skia_src_path)/gpu/GrDefaultPathRenderer.h',
       '<(skia_src_path)/gpu/GrDistanceFieldTextContext.h',
@@ skipping 239 matching lines @@
     ],
     'skgpu_null_gl_sources': [
       '<(skia_src_path)/gpu/gl/GrGLCreateNullInterface.cpp',
 
       # Sk files
       '<(skia_include_path)/gpu/gl/SkNullGLContext.h',
       '<(skia_src_path)/gpu/gl/SkNullGLContext.cpp',
     ],
   },
 }