All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=734686

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgIDg9ozGogkM


Bot(s) for this bug's original alert(s):

Android Builder

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8976334270114739824

"tools/binary_size/diagnose_bloat.py 5b9839ca209cd11c4d899fa92202a280a5c9d222 --cloud -v" reports:

21 symbols added (+), 1645 changed (~), 14 removed (-), 485346 unchanged (not shown)
Number of unique symbols 377202 -> 377205 (+3)
0 paths added, 2 removed, 204 changed

Showing 487,026 symbols (aliases not grouped for diffs) with total pss: 60047 bytes
.text=58.6kb     .rodata=0 bytes    .data*=16 bytes   .bss=0 bytes    total=58.6kb
Number of unique paths: 15633

Index | Running Total | Section@Address | Δ PSS (Δ size_without_padding) | Path
------------------------------------------------------------
~ 0)        780 (1.3%)  t@Group      +780 (0->0)        {{no path}}
               ** symbol gaps (count=9)
+ 1)       1122 (1.9%)  t@0x865e38   +342 (0->340)      mojo/public/cpp/bindings/lib/message.cc
               mojo::Message::Message
+ 2)       1294 (2.2%)  t@0x86617c   +172 (0->172)      mojo/public/cpp/bindings/lib/message.cc
               mojo::Message::AttachHandles
+ 3)       1428 (2.4%)  t@0x865f8c   +134 (0->134)      mojo/public/cpp/bindings/lib/message.cc
               mojo::Message::Message
~ 4)       1298 (2.2%)  t@0x86626a   -130 (148->18)     mojo/public/cpp/bindings/lib/message.cc
               mojo::Message::TakeMojoMessage
- 5)       1168 (1.9%)  t@0x0        -130 (130->0)      mojo/public/cpp/bindings/lib/message_builder.cc
               mojo::internal::MessageBuilder::MessageBuilder
- 6)       1066 (1.8%)  t@0x0        -102 (102->0)      mojo/public/cpp/bindings/lib/message_buffer.cc
               mojo::internal::MessageBuffer::MessageBuffer
~ 7)       1164 (1.9%)  t@0x14507e8  +98 (394->492)     third_party/WebKit/public/platform/modules/websockets/websocket.mojom-blink.cc
               blink::mojom::blink::WebSocketProxy::AddChannelRequest
- 8)       1066 (1.8%)  t@0x0        -98 (98->0)        mojo/public/cpp/bindings/lib/{{shared}}/2
               mojo::GetSerializedMessageContents
~ 9)       1158 (1.9%)  t@0x14c5084  +92 (288->380)     components/spellcheck/common/spellcheck.mojom.cc
               spellcheck::mojom::SpellCheckerProxy::CustomDictionaryChanged
~ 10)      1248 (2.1%)  t@0xb006e4   +90 (218->308)     content/common/url_loader.mojom.cc
               content::mojom::URLLoaderClientProxy::OnReceiveResponse
~ 11)      1338 (2.2%)  t@0xae30e8   +90 (210->300)     content/common/indexed_db/indexed_db.mojom.cc
               indexed_db::mojom::CursorProxy::PrefetchReset
~ 12)      1428 (2.4%)  t@0xa23408   +90 (254->344)     services/preferences/public/interfaces/preferences.mojom.cc
               prefs::mojom::PersistentPrefStoreProxy::RequestValue
~ 13)      1516 (2.5%)  t@0x145372c  +88 (292->380)     third_party/WebKit/public/platform/modules/payments/payment_request.mojom-blink.cc
               payments::mojom::blink::PaymentRequestProxy::Init
~ 14)      1604 (2.7%)  t@0xa22c2c   +88 (424->512)     services/preferences/public/interfaces/preferences.mojom.cc
               prefs::mojom::PrefStoreConnector_Connect_ProxyToResponder::Run
~ 15)      1692 (2.8%)  t@0xa278dc   +88 (388->476)     services/preferences/public/interfaces/tracked_preference_validation_delegate.mojom.cc
               prefs::mojom::TrackedPreferenceValidationDelegateProxy::OnSplitPreferenceValidation
~ 16)      1778 (3.0%)  t@0xb578ac   +86 (218->304)     third_party/WebKit/public/platform/modules/permissions/permission.mojom.cc
               blink::mojom::PermissionServiceProxy::AddPermissionObserver
~ 17)      1864 (3.1%)  t@0x1472024  +86 (170->256)     third_party/WebKit/public/platform/modules/offscreencanvas/offscreen_canvas_surface.mojom-blink.cc
               blink::mojom::blink::OffscreenCanvasProviderProxy::CreateCompositorFrameSink
~ 18)      1950 (3.2%)  t@0x144fac0  +86 (218->304)     third_party/WebKit/public/platform/modules/permissions/permission.mojom-blink.cc
               blink::mojom::blink::PermissionServiceProxy::AddPermissionObserver
~ 19)      2036 (3.4%)  t@0xaeb300   +86 (314->400)     content/common/leveldb_wrapper.mojom.cc
               content::mojom::LevelDBObserverProxy::KeyAdded
~ 20)      2122 (3.5%)  t@0xaeb674   +86 (314->400)     content/common/leveldb_wrapper.mojom.cc
               content::mojom::LevelDBObserverProxy::KeyDeleted
~ 21)      2208 (3.7%)  t@0xae2790   +86 (166->252)     content/common/indexed_db/indexed_db.mojom.cc
               indexed_db::mojom::DatabaseCallbacksProxy::Abort
~ 22)      2294 (3.8%)  t@0xae4b6c   +86 (194->280)     content/common/indexed_db/indexed_db.mojom.cc
               indexed_db::mojom::DatabaseProxy::AckReceivedBlobs
~ 23)      2380 (4.0%)  t@0xae48fc   +86 (178->264)     content/common/indexed_db/indexed_db.mojom.cc
               indexed_db::mojom::DatabaseProxy::RenameIndex
~ 24)      2466 (4.1%)  t@0xae37cc   +86 (170->256)     content/common/indexed_db/indexed_db.mojom.cc
               indexed_db::mojom::DatabaseProxy::RenameObjectStore
~ 25)      2552 (4.2%)  t@0x14c4f0c  +86 (290->376)     components/spellcheck/common/spellcheck.mojom.cc
               spellcheck::mojom::SpellCheckerProxy::Initialize
~ 26)      2638 (4.4%)  t@0xe72c84   +86 (182->268)     services/ui/gpu/interfaces/gpu_main.mojom.cc
               ui::mojom::GpuMainProxy::CreateGpuService
~ 27)      2722 (4.5%)  t@0xe990b0   +84 (256->340)     components/autofill/content/common/autofill_driver.mojom.cc
               autofill::mojom::PasswordManagerClientProxy::ShowPasswordGenerationPopup
~ 28)      2806 (4.7%)  t@0xb4d8b8   +84 (280->364)     third_party/WebKit/public/platform/modules/app_banner/app_banner.mojom.cc
               blink::mojom::AppBannerControllerProxy::BannerPromptRequest
~ 29)      2890 (4.8%)  t@0xb5c8a8   +84 (200->284)     third_party/WebKit/public/platform/modules/websockets/websocket.mojom.cc
               blink::mojom::WebSocketClientProxy::OnDataFrame
~ 30)      2974 (5.0%)  t@0x1471f04  +84 (204->288)     third_party/WebKit/public/platform/modules/offscreencanvas/offscreen_canvas_surface.mojom-blink.cc
               blink::mojom::blink::OffscreenCanvasProviderProxy::CreateOffscreenCanvasSurface
~ 31)      3058 (5.1%)  t@0x14509d4  +84 (196->280)     third_party/WebKit/public/platform/modules/websockets/websocket.mojom-blink.cc
               blink::mojom::blink::WebSocketProxy::SendFrame
~ 32)      3142 (5.2%)  t@0xaf7394   +84 (192->276)     content/common/service_worker/embedded_worker.mojom.cc
               content::mojom::EmbeddedWorkerInstanceClientProxy::StartWorker
~ 33)      3226 (5.4%)  t@0xae95d0   +84 (192->276)     content/common/input/input_handler.mojom.cc

This change was reverted: ece06fd86a0338d4d79364a494f58ff2810bdec7.

rocket@ - This is just an FYI but it would be great if some of the size jump could be addressed in the reland!

You should be able to check the size jump locally via "tools/binary_size/diagnose_bloat.py HEAD -v".

The change was already relanded and I see the same regression there: https://chromeperf.appspot.com/report?sid=a097e74b1aa288511afb4cb616efe0f95ba4d347ad61d5e835072f23450938ba&num_points=10&rev=480303

This is surprising.

 Issue 734726  has been merged into this issue.

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8976328641290192752

Perf graphs are showing a reduction of 73700 bytes for the fix, even larger than the original jump! Thanks for looking into this.

Commit: f7a2fe16b76477dd173f099916e5028a5cf99c5f

Graph: https://chromeperf.appspot.com/report?sid=a097e74b1aa288511afb4cb616efe0f95ba4d347ad61d5e835072f23450938ba&num_points=10&rev=480739