Remove dependence on platform GL headers. Remove code that attempts to infer GL function pointers on various platforms. Instead add platform-specific implementations for Windows and Mac. (GLX coming)

Review URL: http://codereview.appspot.com/4354048/

git-svn-id: http://skia.googlecode.com/svn/trunk@1045 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrGLDefaultInterface_none.cpp b/gpu/src/GrGLDefaultInterface_none.cpp
new file mode 100644
index 0000000..d355589
--- /dev/null
+++ b/gpu/src/GrGLDefaultInterface_none.cpp
@@ -0,0 +1,18 @@
+/*
+    Copyright 2011 Google Inc.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+ */
+
+void GrGLSetDefaultGLInterface() {
+}