Pulling in https://android-review.googlesource.com/#/c/186482/1

Fix memory leak in HWUI

std::unique_ptr::release just releases the ownership of the
managed object. To delete the object, std::unique_ptr::reset
function should be called.

Bug: 26116596
Change-Id: If65f74085b1fc2be3a9fffc433326e0bcdb40ff3

libs/hwui/Caches.cpp

@@ -117,7 +117,7 @@ void Caches::initStaticProperties() {
 
 void Caches::terminate() {
     if (!mInitialized) return;
-    mRegionMesh.release();
+    mRegionMesh.reset(nullptr);
 
     fboCache.clear();
 

libs/hwui/GammaFontRenderer.cpp

@@ -194,7 +194,7 @@ void Lookup3GammaFontRenderer::endPrecaching() {
 
 void Lookup3GammaFontRenderer::clear() {
     for (int i = 0; i < kGammaCount; i++) {
-        mRenderers[i].release();
+        mRenderers[i].reset(nullptr);
     }
 }
 
@@ -215,7 +215,7 @@ void Lookup3GammaFontRenderer::flush() {
 
     if (count <= 1 || min < 0) return;
 
-    mRenderers[min].release();
+    mRenderers[min].reset(nullptr);
 
     // Also eliminate the caches for large glyphs, as they consume significant memory
     for (int i = 0; i < kGammaCount; ++i) {

libs/hwui/Layer.cpp

@@ -251,7 +251,7 @@ void Layer::defer(const OpenGLRenderer& rootRenderer) {
 void Layer::cancelDefer() {
     renderNode = nullptr;
     deferredUpdateScheduled = false;
-    deferredList.release();
+    deferredList.reset(nullptr);
 }
 
 void Layer::flush() {