[RemotePlayback] No monitoring on low-end devices

third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp

Index: third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp
diff --git a/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp b/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp
index 86c69e2d965117b42174b68a91101bc8e12f2349..4b4eeaee780473c6484b9d351a4c9ddfe1ded902 100644
--- a/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp
+++ b/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp
@@ -14,6 +14,7 @@
 #include "core/html/HTMLMediaElement.h"
 #include "modules/EventTargetModules.h"
 #include "platform/UserGestureIndicator.h"
+#include "platform/heap/Heap.h"
 
 namespace blink {
 
@@ -59,7 +60,8 @@ RemotePlayback::RemotePlayback(ScriptState* scriptState,
                   ? WebRemotePlaybackState::Connected
                   : WebRemotePlaybackState::Disconnected),
       m_availability(element.hasRemoteRoutes()),
-      m_mediaElement(&element) {}
+      m_mediaElement(&element),
+      m_isLowEndDevice(ProcessHeap::isLowEndDevice()) {}
 
 const AtomicString& RemotePlayback::interfaceName() const {
   return EventTargetNames::RemotePlayback;
@@ -81,8 +83,13 @@ ScriptPromise RemotePlayback::watchAvailability(
     return promise;
   }
 
-  // TODO(avayvod): implement steps 4 and 5 of the algorithm.
-  // https://crbug.com/655233
+  if (m_isLowEndDevice) {
+    resolver->reject(DOMException::create(
+        NotSupportedError,
+        "Availability monitoring is not supported on this device."));
+    return promise;
+  }
+
   int id;
   do {
     id = getExecutionContext()->circularSequentialID();