Create a platform-dependent object for accessing purgeable memory.

gyp/ports.gyp

 # Port-specific Skia library code.
 {
   'targets': [
     {
       'target_name': 'ports',
       'product_name': 'skia_ports',
       'type': 'static_library',
       'standalone_static_library': 1,
       'dependencies': [
         'core.gyp:core',
         'sfnt.gyp:sfnt',
         'utils.gyp:utils',
       ],
       'include_dirs': [
+        '../include/effects',
         '../include/images',
-        '../include/effects',
         '../include/ports',
         '../include/xml',
         '../src/core',
+        '../src/lazy',
         '../src/utils',
       ],
       'sources': [
         '../src/ports/SkDebug_nacl.cpp',
         '../src/ports/SkDebug_stdio.cpp',
         '../src/ports/SkDebug_win.cpp',
         '../src/ports/SkFontHost_sandbox_none.cpp',
         '../src/ports/SkFontHost_win.cpp',
         '../src/ports/SkFontHost_win_dw.cpp',
         '../src/ports/SkGlobalInitialization_default.cpp',
+        '../src/ports/SkPurgeableMemoryBlock_none.cpp',
         '../src/ports/SkThread_win.cpp',
 
         '../src/ports/SkFontHost_tables.cpp',
         '../src/ports/SkMemory_malloc.cpp',
         '../src/ports/SkOSFile_stdio.cpp',
         '../src/ports/SkTime_Unix.cpp',
         '../src/ports/SkTime_win.cpp',
         '../src/ports/SkXMLParser_empty.cpp',
       ],
       'conditions': [
@@ skipping 49 matching lines @@
             '../src/ports/SkDebug_nacl.cpp',
           ],
         }],
         [ 'skia_os == "mac"', {
           'include_dirs': [
             '../include/utils/mac',
             '../third_party/freetype/include/**',
           ],
           'sources': [
             '../src/ports/SkFontHost_mac.cpp',
-            '../src/utils/mac/SkStream_mac.cpp',
 #            '../src/ports/SkFontHost_FreeType.cpp',
 #            '../src/ports/SkFontHost_FreeType_common.cpp',
 #            '../src/ports/SkFontHost_freetype_mac.cpp',
+            '../src/ports/SkPurgeableMemoryBlock_mac.cpp',
             '../src/ports/SkThread_pthread.cpp',
+            '../src/utils/mac/SkStream_mac.cpp',
           ],
           'sources!': [
+            '../src/ports/SkPurgeableMemoryBlock_none.cpp',
             '../src/ports/SkFontHost_tables.cpp',
           ],
         }],
         [ 'skia_os == "ios"', {
           'include_dirs': [
             '../include/utils/ios',
             '../include/utils/mac',
           ],
           'sources': [
             '../src/ports/SkFontHost_mac.cpp',
+            '../src/ports/SkPurgeableMemoryBlock_mac.cpp',
+            '../src/ports/SkThread_pthread.cpp',
             '../src/utils/mac/SkStream_mac.cpp',
-            '../src/ports/SkThread_pthread.cpp',
           ],
           'sources!': [
+            '../src/ports/SkPurgeableMemoryBlock_none.cpp',
             '../src/ports/SkFontHost_tables.cpp',
           ],
         }],
         [ 'skia_os == "win"', {
           'include_dirs': [
             'config/win',
             '../src/utils/win',
           ],
           'conditions': [
             [ 'skia_directwrite', {
@@ skipping 21 matching lines @@
         }],
         [ 'skia_os == "android"', {
           'defines': [
             #Android provides at least FreeType 2.4.0 at runtime.
             'SK_FONTHOST_FREETYPE_RUNTIME_VERSION=0x020400',
             #Skia should not use dlopen on Android.
             'SK_CAN_USE_DLOPEN=0',
           ],
           'sources!': [
             '../src/ports/SkDebug_stdio.cpp',
+            '../src/ports/SkPurgeableMemoryBlock_none.cpp',
           ],
           'sources': [
-            '../include/ports/SkAshmemImageCache.h',
-
             '../src/ports/SkDebug_android.cpp',
             '../src/ports/SkThread_pthread.cpp',
             '../src/ports/SkFontHost_android.cpp',
             '../src/ports/SkFontHost_FreeType.cpp',
             '../src/ports/SkFontHost_FreeType_common.cpp',
+            '../src/ports/SkPurgeableMemoryBlock_android.cpp',
             '../src/ports/FontHostConfiguration_android.cpp',
-            '../src/ports/SkAshmemImageCache.cpp',
           ],
           'dependencies': [
              'freetype.gyp:freetype',
              'android_deps.gyp:expat',
           ],
         }],
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '../include/ports',
         ],
       },
     },
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: