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Cherry pick PR #9203: cobalt: Disable resource load throttling #9252

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Cherry pick PR #9203: cobalt: Disable resource load throttling #9252

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8abd33e
cobalt: Disable resource load throttling (#9203)
zhongqiliang Feb 25, 2026
b7a631e
fix merge conflict
zhongqiliang Feb 25, 2026
b3a0aed
for the comment
zhongqiliang Feb 26, 2026
d3ac418
Fix formatting in BUILD.gn by adding a missing comma
zhongqiliang Feb 26, 2026
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5 changes: 5 additions & 0 deletions third_party/blink/renderer/platform/loader/BUILD.gn
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Original file line number Diff line number Diff line change
Expand Up @@ -261,6 +261,11 @@ source_set("unit_tests") {
"unencoded_digest_unittest.cc",
]

if (is_cobalt) {
# resource_load_schedule is disabled, see b/484394054
sources -= [ "fetch/resource_load_scheduler_test.cc" ]
}

configs += [ "//third_party/blink/renderer/platform:blink_platform_config" ]

deps = [
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6 changes: 6 additions & 0 deletions third_party/blink/renderer/platform/loader/fetch/resource_load_scheduler.cc
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Expand Up @@ -14,6 +14,7 @@
#include "base/numerics/safe_conversions.h"
#include "base/strings/string_number_conversions.h"
#include "base/time/default_clock.h"
#include "build/build_config.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/mojom/devtools/console_message.mojom-blink.h"
#include "third_party/blink/public/platform/platform.h"
Expand Down Expand Up @@ -261,6 +262,10 @@ void ResourceLoadScheduler::SetOutstandingLimitForTesting(
}

bool ResourceLoadScheduler::IsClientDelayable(ThrottleOption option) const {
#if BUILDFLAG(IS_COBALT)
// Cobalt is a single tab app, all requests should not be throttled.
return false;
#else
switch (frame_scheduler_lifecycle_state_) {
case scheduler::SchedulingLifecycleState::kNotThrottled:
case scheduler::SchedulingLifecycleState::kHidden:
Expand All @@ -269,6 +274,7 @@ bool ResourceLoadScheduler::IsClientDelayable(ThrottleOption option) const {
case scheduler::SchedulingLifecycleState::kStopped:
return option != ThrottleOption::kCanNotBeStoppedOrThrottled;
}
#endif
}

void ResourceLoadScheduler::OnLifecycleStateChanged(
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