Update content/ to use WeakPtr<T>::get() instead of implicit "operator T*"

content/common/gpu/media/gpu_video_decode_accelerator.cc

Index: content/common/gpu/media/gpu_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/gpu_video_decode_accelerator.cc b/content/common/gpu/media/gpu_video_decode_accelerator.cc
index 96d78a527078b56c3605909debea0cd650bc8f11..1d9afd4526417a94da737656ee7b3d8cf3ce2a50 100644
--- a/content/common/gpu/media/gpu_video_decode_accelerator.cc
+++ b/content/common/gpu/media/gpu_video_decode_accelerator.cc
@@ -42,7 +42,7 @@ namespace content {
 
 static bool MakeDecoderContextCurrent(
     const base::WeakPtr<GpuCommandBufferStub> stub) {
-  if (!stub) {
+  if (!stub.get()) {
     DLOG(ERROR) << "Stub is gone; won't MakeCurrent().";
     return false;
   }