[Merge M51] aw: Avoid livelock bouncing between zero and non-zero memory

android_webview/browser/browser_view_renderer.cc

Index: android_webview/browser/browser_view_renderer.cc
diff --git a/android_webview/browser/browser_view_renderer.cc b/android_webview/browser/browser_view_renderer.cc
index 9f91213dd0e5b74313ac33d20db2821491d28f87..7bf332e0ccb1564b4c1b4564f4b6f183f863f5ae 100644
--- a/android_webview/browser/browser_view_renderer.cc
+++ b/android_webview/browser/browser_view_renderer.cc
@@ -231,10 +231,7 @@ bool BrowserViewRenderer::OnDrawHardware() {
   if (!frame.frame.get()) {
     TRACE_EVENT_INSTANT0("android_webview", "NoNewFrame",
                          TRACE_EVENT_SCOPE_THREAD);
-    hardware_enabled_ = render_thread_manager_->HasFrameOnUI();
-    if (!hardware_enabled_)
-      UpdateMemoryPolicy();
-    return hardware_enabled_;
+    return render_thread_manager_->HasFrameOnUI();
   }
 
   std::unique_ptr<ChildFrame> child_frame = base::WrapUnique(new ChildFrame(