Advertises the GL_OES_rgb8_rgba8 extension.

Author:    Shannon Woods

git-svn-id: https://angleproject.googlecode.com/svn/trunk@395 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/Context.cpp b/src/libGLESv2/Context.cpp
index f07f3a9..f301246 100644
--- a/src/libGLESv2/Context.cpp
+++ b/src/libGLESv2/Context.cpp
@@ -2956,6 +2956,7 @@
     mExtensionString += "GL_EXT_texture_format_BGRA8888 ";
     mExtensionString += "GL_EXT_read_format_bgra ";
     mExtensionString += "GL_ANGLE_framebuffer_blit ";
+    mExtensionString += "GL_OES_rgb8_rgba8 ";
 
 
     if (getMaxSupportedSamples() != 0)