Remove usage of SharedBuffer

- Remove getSharedBuffer() from Region
- Don't use SharedBuffer for memory management in HWCLayerVersion1,
  instead keep shallow copies of the Regions.

Bug 23962051

(cherry picked from commit d814cf2a3e3a2fdb73efa80539fe8af0a93da1db)

Change-Id: I8fa17beed57936648c7b4defc9219dff1d5b337f

1 files changed, 0 insertions, 12 deletions

diff --git a/libs/ui/Region.cpp b/libs/ui/Region.cpp
index 3810da4049..a3558bd5c2 100644
--- a/libs/ui/Region.cpp
+++ b/libs/ui/Region.cpp
@@ -835,18 +835,6 @@ Rect const* Region::getArray(size_t* count) const {
     return begin();
 }
 
-SharedBuffer const* Region::getSharedBuffer(size_t* count) const {
-    // We can get to the SharedBuffer of a Vector<Rect> because Rect has
-    // a trivial destructor.
-    SharedBuffer const* sb = SharedBuffer::bufferFromData(mStorage.array());
-    if (count) {
-        size_t numRects = isRect() ? 1 : mStorage.size() - 1;
-        count[0] = numRects;
-    }
-    sb->acquire();
-    return sb;
-}
-
 // ----------------------------------------------------------------------------
 
 void Region::dump(String8& out, const char* what, uint32_t /* flags */) const