Readd GrResourceProvider.h to GrAHardwareBufferImageGenerator.cpp (for Android roll)

TBR=rmistry@google.com

Change-Id: If6aa6a024bcc87846c3b24b0d004ffe7177895a8
Reviewed-on: https://skia-review.googlesource.com/20052
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrAHardwareBufferImageGenerator.cpp b/src/gpu/GrAHardwareBufferImageGenerator.cpp
index 5412574..06fa584 100644
--- a/src/gpu/GrAHardwareBufferImageGenerator.cpp
+++ b/src/gpu/GrAHardwareBufferImageGenerator.cpp
@@ -16,6 +16,7 @@
 #include "GrBackendSurface.h"
 #include "GrContext.h"
 #include "GrContextPriv.h"
+#include "GrResourceProvider.h"
 #include "GrTexture.h"
 
 #include <EGL/egl.h>