Move code in ui/gl/* from gfx:: to gl::

android_webview/browser/aw_gl_surface.h

Index: android_webview/browser/aw_gl_surface.h
diff --git a/android_webview/browser/aw_gl_surface.h b/android_webview/browser/aw_gl_surface.h
index 056851b41aa351d669a1d8002b84df85207d6f72..a195605f6e40d4821fac4b75e2935418efcf49d8 100644
--- a/android_webview/browser/aw_gl_surface.h
+++ b/android_webview/browser/aw_gl_surface.h
@@ -13,7 +13,7 @@ namespace android_webview {
 // This surface is used to represent the underlying surface provided by the App
 // inside a hardware draw. Note that offscreen contexts will not be using this
 // GLSurface.
-class AwGLSurface : public gfx::GLSurface {
+class AwGLSurface : public gl::GLSurface {
  public:
   AwGLSurface();