Remove WGC3D typedefs and move WebGraphicsInfo to Platform.

gpu/blink/webgraphicscontext3d_impl.cc

Index: gpu/blink/webgraphicscontext3d_impl.cc
diff --git a/gpu/blink/webgraphicscontext3d_impl.cc b/gpu/blink/webgraphicscontext3d_impl.cc
index 155d9fef9a5a2bebdc702eab94751fa224931f6d..99a1a8c3fc9a28cc67d05a223ee226c714289a8a 100644
--- a/gpu/blink/webgraphicscontext3d_impl.cc
+++ b/gpu/blink/webgraphicscontext3d_impl.cc
@@ -23,22 +23,6 @@
 #endif
 #include "third_party/khronos/GLES2/gl2ext.h"
 
-using blink::WGC3Dbitfield;
-using blink::WGC3Dboolean;
-using blink::WGC3Dbyte;
-using blink::WGC3Dchar;
-using blink::WGC3Dclampf;
-using blink::WGC3Denum;
-using blink::WGC3Dfloat;
-using blink::WGC3Dint;
-using blink::WGC3Dintptr;
-using blink::WGC3Dsizei;
-using blink::WGC3Dsizeiptr;
-using blink::WGC3Dint64;
-using blink::WGC3Duint64;
-using blink::WGC3Duint;
-using blink::WebGLId;
-
 namespace gpu_blink {
 
 class WebGraphicsContext3DErrorMessageCallback