Change CHROMIUM_image declarations to support multi planar input.

cc/test/test_web_graphics_context_3d.h

Index: cc/test/test_web_graphics_context_3d.h
diff --git a/cc/test/test_web_graphics_context_3d.h b/cc/test/test_web_graphics_context_3d.h
index c2dee45e83361bcbda47c8ab2819ddeef0718f06..9e39cc38f3a5f548818ddaaf701dc9df4aa8889c 100644
--- a/cc/test/test_web_graphics_context_3d.h
+++ b/cc/test/test_web_graphics_context_3d.h
@@ -253,7 +253,7 @@ class TestWebGraphicsContext3D {
                                   GLenum access);
   virtual GLboolean unmapBufferCHROMIUM(GLenum target);
 
-  virtual GLuint createImageCHROMIUM(ClientBuffer buffer,
+  virtual GLuint createImageCHROMIUM(ClientBuffer* buffers,
                                      GLsizei width,
                                      GLsizei height,
                                      GLenum internalformat);