Adjusting skia gyp rules to make webkit builds use SkGPipe backend for

deferred canvas rendering

BUG=139174
TEST=none.
Review URL: https://chromiumcodereview.appspot.com/10826034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148776 0039d316-1c4b-4281-b951-d872f2087c98

skia/skia.gyp

@@ -809,7 +809,6 @@
         'config',
         '../third_party/skia/include/config',
         '../third_party/skia/include/core',
-        '../third_party/skia/include/pipe',
         '../third_party/skia/include/effects',
         '../third_party/skia/include/gpu',
         '../third_party/skia/include/gpu/gl',
@@ -1091,12 +1090,14 @@
           '../third_party/skia/include/pdf',
           '../third_party/skia/include/gpu',
           '../third_party/skia/include/gpu/gl',
+          '../third_party/skia/include/pipe',
           '../third_party/skia/include/ports',
           '../third_party/skia/include/utils',
           'ext',
         ],
         'defines': [
           'SK_BUILD_NO_IMAGE_ENCODE',
+          'SK_DEFERRED_CANVAS_USES_GPIPE=1',
           'GR_GL_CUSTOM_SETUP_HEADER="GrGLConfig_chrome.h"',
           'GR_AGGRESSIVE_SHADER_OPTS=1',
         ],