Implement HW Bitmap for Skia pipeline

Implement HW Bitmap for Skia pipeline. Use new Skia
SkImage::MakeFromAHardwareBuffer API, which will enable to
record HW Bitmap into a picture. Move logic that uploads
SkBitmap into a GraphicBuffer into pipeline specific classes.

Test: All CTS and other tests pass for HWUI pipleine. For Skia
pipeline graphics CTS tests pass, 2 UIRendering CTS tests which
excise HW bitmaps with color spaces fail, bitmapShaderEglImage
macrobench fails (to be fixed by a CL in Skia), HWUI unit tests
pass, no EGL leaks found.

Change-Id: Id5926d7cccd81af8b55400f44fb524a427543d05
diff --git a/libs/hwui/renderthread/RenderThread.h b/libs/hwui/renderthread/RenderThread.h
index 9bc5985..4b5601c 100644
--- a/libs/hwui/renderthread/RenderThread.h
+++ b/libs/hwui/renderthread/RenderThread.h
@@ -24,6 +24,7 @@
 
 #include <GrContext.h>
 #include <cutils/compiler.h>
+#include <SkBitmap.h>
 #include <ui/DisplayInfo.h>
 #include <utils/Looper.h>
 #include <utils/Thread.h>
@@ -33,6 +34,7 @@
 
 namespace android {
 
+class Bitmap;
 class DisplayEventReceiver;
 
 namespace uirenderer {
@@ -104,6 +106,8 @@
 
     VulkanManager& vulkanManager() { return *mVkManager; }
 
+    sk_sp<Bitmap> allocateHardwareBitmap(SkBitmap& skBitmap);
+
 protected:
     virtual bool threadLoop() override;