Implement glBlitFramebuffer using glBlitFramebufferANGLE.

TRAC #23055
Signed-off-by: Jamie Madill
Signed-off-by: Shannon Woods
Author: Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2383 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/libGLESv2.cpp b/src/libGLESv2/libGLESv2.cpp
index c46d37c..388452c 100644
--- a/src/libGLESv2/libGLESv2.cpp
+++ b/src/libGLESv2/libGLESv2.cpp
@@ -8693,7 +8693,7 @@
                 return gl::error(GL_INVALID_OPERATION);
             }
 
-            UNIMPLEMENTED();
+            glBlitFramebufferANGLE(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
         }
     }
     catch(std::bad_alloc&)