Restore only modified texture state during virtual context switches

gpu/command_buffer/service/gl_state_restorer_impl.h

Index: gpu/command_buffer/service/gl_state_restorer_impl.h
diff --git a/gpu/command_buffer/service/gl_state_restorer_impl.h b/gpu/command_buffer/service/gl_state_restorer_impl.h
index 032bf7251867059477a30c649d4324d863360af4..625d8300b3826d1703727d558a3ffce65b3bd701 100644
--- a/gpu/command_buffer/service/gl_state_restorer_impl.h
+++ b/gpu/command_buffer/service/gl_state_restorer_impl.h
@@ -12,6 +12,10 @@
 #include "gpu/gpu_export.h"
 #include "ui/gl/gl_state_restorer.h"
 
+namespace gfx {
+class DirtyTextureState;
+}
+
 namespace gpu {
 namespace gles2 {
 class GLES2Decoder;
@@ -24,7 +28,8 @@ class GPU_EXPORT GLStateRestorerImpl : public gfx::GLStateRestorer {
    virtual ~GLStateRestorerImpl();
 
    virtual bool IsInitialized() OVERRIDE;
-   virtual void RestoreState() OVERRIDE;
+   virtual void RestoreState(
+       const gfx::DirtyTextureState* dirty_texture_state) OVERRIDE;
    virtual void RestoreAllTextureUnitBindings() OVERRIDE;
    virtual void RestoreFramebufferBindings() OVERRIDE;