devel/electron27: fix build with clang 18
Clang 18 has become more stringent about narrowing in initializer lists,
resulting in errors when building devel/electron27:
../../third_party/webrtc/pc/legacy_stats_collector.cc:191:54: error: non-constant-expression cannot be narrowed from type 'double' to 'float' in initializer list [-Wc++11-narrowing-const-reference]
191 | {StatsReport::kStatsValueNameTotalAudioEnergy, info.total_output_energy},
| ^~~~~~~~~~~~~~~~~~~~~~~~
../../third_party/webrtc/pc/legacy_stats_collector.cc:193:8: error: non-constant-expression cannot be narrowed from type 'double' to 'float' in initializer list [-Wc++11-narrowing-const-reference]
193 | info.total_output_duration}};
| ^~~~~~~~~~~~~~~~~~~~~~~~~~and later:
In file included from ../../cc/layers/mirror_layer_impl.cc:5:
../../cc/layers/mirror_layer_impl.h:59:40: error: non-constant-expression cannot be narrowed from type 'int' to 'unsigned long' in initializer list [-Wc++11-narrowing-const-reference]
59 | return viz::CompositorRenderPassId{mirrored_layer_id()};
| ^~~~~~~~~~~~~~~~~~~The first batch of errors can be fixed similarly to bug 276997, by
cherry-picking https://webrtc.googlesource.com/src/+/267f9bdd53 into the
thirdparty directory.
The second batch of errors can be fixed by cherry-picking
https://chromium.googlesource.com/chromium/src/+/5e9fb4130a537.
PR: 277129
MFH: 2024Q1