Add support for GL_CHROMIUM_flipy

Review URL: http://codereview.appspot.com/5413051/


git-svn-id: http://skia.googlecode.com/svn/trunk@2723 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrGpuGL.h b/src/gpu/GrGpuGL.h
index 3b8e6d7..eba162e 100644
--- a/src/gpu/GrGpuGL.h
+++ b/src/gpu/GrGpuGL.h
@@ -55,6 +55,7 @@
             , fBGRAIsInternalFormat(false)
             , fTextureSwizzleSupport(false)
             , fUnpackRowLengthSupport(false)
+            , fUnpackFlipYSupport(false)
             , fPackRowLengthSupport(false) {
             memset(fAASamples, 0, sizeof(fAASamples));
         }
@@ -102,6 +103,9 @@
         // Is there support for GL_UNPACK_ROW_LENGTH
         bool fUnpackRowLengthSupport;
 
+        // Is there support for GL_UNPACK_FLIP_Y
+        bool fUnpackFlipYSupport;
+
         // Is there support for GL_PACK_ROW_LENGTH
         bool fPackRowLengthSupport;