Fix a couple forward declares in angletypes.h.

src/libANGLE/Program.h

@@ -44,6 +44,7 @@ class Context;
 class ContextState;
 class Shader;
 class ShaderProgramManager;
+class State;
 class InfoLog;
 class Buffer;
 class Framebuffer;

src/libANGLE/angletypes.h

@@ -20,10 +20,6 @@
 namespace gl
 {
 class Buffer;
-class State;
-class Program;
-struct VertexAttribute;
-struct VertexAttribCurrentValueData;
 
 enum PrimitiveType
 {

src/libANGLE/formatutils.h

@@ -21,6 +21,7 @@
 
 namespace gl
 {
+struct VertexAttribute;
 
 struct FormatType final
 {

src/libANGLE/renderer/d3d/BufferD3D.h

@@ -15,6 +15,11 @@
 #include <stdint.h>
 #include <vector>
 
+namespace gl
+{
+struct VertexAttribute;
+}
+
 namespace rx
 {
 class BufferFactoryD3D;