[ANativeWindow] Rename allocateBuffers to tryAllocateBuffers

Renaming was done in response to API feedback.

Bug: 148962594
Test: builds
Change-Id: I05b3e99800d967dda243b6e7af48f1b645909bdd
diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index 91f9447..1df3336 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -204,8 +204,7 @@
 
 void CanvasContext::allocateBuffers() {
     if (mNativeSurface) {
-        ANativeWindow* anw = mNativeSurface->getNativeWindow();
-        ANativeWindow_allocateBuffers(anw);
+        ANativeWindow_tryAllocateBuffers(mNativeSurface->getNativeWindow());
     }
 }