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

android_webview/browser/aw_render_thread_context_provider.h

Index: android_webview/browser/aw_render_thread_context_provider.h
diff --git a/android_webview/browser/aw_render_thread_context_provider.h b/android_webview/browser/aw_render_thread_context_provider.h
index c24add44754715fc9a4b62089bfca277f02946df..ef0fecf13542cce9d1b6b0e1573f2a3d0b29774f 100644
--- a/android_webview/browser/aw_render_thread_context_provider.h
+++ b/android_webview/browser/aw_render_thread_context_provider.h
@@ -16,7 +16,7 @@
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 
-namespace gfx {
+namespace gl {
 class GLSurface;
 }
 
@@ -29,12 +29,12 @@ namespace android_webview {
 class AwRenderThreadContextProvider : public cc::ContextProvider {
  public:
   static scoped_refptr<AwRenderThreadContextProvider> Create(
-      scoped_refptr<gfx::GLSurface> surface,
+      scoped_refptr<gl::GLSurface> surface,
       scoped_refptr<gpu::InProcessCommandBuffer::Service> service);
 
  private:
   AwRenderThreadContextProvider(
-      scoped_refptr<gfx::GLSurface> surface,
+      scoped_refptr<gl::GLSurface> surface,
       scoped_refptr<gpu::InProcessCommandBuffer::Service> service);
   ~AwRenderThreadContextProvider() override;