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

ui/gl/gl_implementation_x11.cc

Index: ui/gl/gl_implementation_x11.cc
diff --git a/ui/gl/gl_implementation_x11.cc b/ui/gl/gl_implementation_x11.cc
index 682f9f9b6d55a1d58bdc71260c6be9e98177397f..776bb2d45a0ce419f674ac25b7f7efeb076f045c 100644
--- a/ui/gl/gl_implementation_x11.cc
+++ b/ui/gl/gl_implementation_x11.cc
@@ -19,7 +19,7 @@
 #include "ui/gl/gl_osmesa_api_implementation.h"
 #include "ui/gl/gl_switches.h"
 
-namespace gfx {
+namespace gl {
 namespace {
 
 // TODO(piman): it should be Desktop GL marshalling from double to float. Today
@@ -148,8 +148,8 @@ bool InitializeStaticGLBindings(GLImplementation implementation) {
 
       // These two functions take single precision float rather than double
       // precision float parameters in GLES.
-      ::gfx::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf;
-      ::gfx::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef;
+      ::gl::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf;
+      ::gl::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef;
       break;
     }
     case kGLImplementationMockGL: {
@@ -218,4 +218,4 @@ bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) {
   return false;
 }
 
-}  // namespace gfx
+}  // namespace gl