ui/gl: Move GLImage into gl namespace.

content/common/gpu/stream_texture_android.h

Index: content/common/gpu/stream_texture_android.h
diff --git a/content/common/gpu/stream_texture_android.h b/content/common/gpu/stream_texture_android.h
index 94a0848ee0d780a9726464ab4d1d528f3e2a5564..a761206b2ac297fd24b43d1a70822422b8c3148a 100644
--- a/content/common/gpu/stream_texture_android.h
+++ b/content/common/gpu/stream_texture_android.h
@@ -18,7 +18,7 @@ class Size;
 
 namespace content {
 
-class StreamTexture : public gfx::GLImage,
+class StreamTexture : public gl::GLImage,
                       public IPC::Listener,
                       public GpuCommandBufferStub::DestructionObserver {
  public:
@@ -32,7 +32,7 @@ class StreamTexture : public gfx::GLImage,
                 uint32 texture_id);
   ~StreamTexture() override;
 
-  // gfx::GLImage implementation:
+  // gl::GLImage implementation:
   void Destroy(bool have_context) override;
   gfx::Size GetSize() override;
   unsigned GetInternalFormat() override;