All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=775502

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=dcb1635a85e642509a7c81150aeea856885fe6e47aae97d522c8272e53644432


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

Android Builder

diagnose_bloat.py results:
Diff Summary
    +16384 bytes MonochromePublic.apk_Specifics normalized apk size for range: 6576495f3a7a07adece5f4689019c6f2f71dc439..1560988249c97c5cc1763aa364a0423f9e318c13
     +8192 bytes MonochromePublic.apk_Specifics normalized apk size for range: 217de927fbe9dfd356f49d5ba8c1145d7b161f1f..b4deef6168bea22be807a9305540dcd4a630e4eb
     +4096 bytes MonochromePublic.apk_Specifics normalized apk size for range: 18b8fbb528a8021e04a029e06eafee50b918bce0..ed6f00fb8e19c541f0a8927222be13eeee89a82c
     +4096 bytes MonochromePublic.apk_Specifics normalized apk size for range: dde4cbb0b10450bb952bf07f88e40fb54e857561..6ff68255e9e74cd0e2ae51bcfc33002605851ba6
     +4096 bytes MonochromePublic.apk_Specifics normalized apk size for range: 9d9048db536c19803d43130f88e13901d7051d44..183eb36b88bc7acff7b02f930db56c2c76acc3e6
     +4096 bytes MonochromePublic.apk_Specifics normalized apk size for range: 14bfa18b4526454d78d94a2670eb330385b2ed20..1c5529993dfd0afd3545708a41896456c0d25d70
     +4096 bytes MonochromePublic.apk_Specifics normalized apk size for range: 1117da834c8d29ea6e92a734d001fdeed1d4a61e..9fdb8c8255ea1c9d9867d5266fe433b9155c49da
     +4096 bytes MonochromePublic.apk_Specifics normalized apk size for range: 28ef8dc7009d57de2782668ed00dff34e31dee2d..e34debaf2b27edb867d8058da1cff19f82c7225f
     +4096 bytes MonochromePublic.apk_Specifics normalized apk size for range: d5b29f43dee50b31e7c895ba791b7cdcba3300a6..5ea95febb0fa5232f366784b555502f825a3f4dc
     +4096 bytes MonochromePublic.apk_Specifics normalized apk size for range: b93406199853a8b79d8105a035ebe70773143c1d..b5acda73ff21a96eaef3bef1ab58945c6499ad5a
     +4096 bytes MonochromePublic.apk_Specifics normalized apk size for range: efd7c5949b3a427a9ed4c14fc0e0f6914528db79..3384a793e0bcb495f5c2695ce3bf9d77be83e89b
        +0 bytes MonochromePublic.apk_Specifics normalized apk size for range: a5565227f2a5eb3821570ab340999817c7d17e77..cc237d872b2e0533e97219d7a5aba7ae53e89386

1560988249c97c5cc1763aa364a0423f9e318c13 is "[bigint] Support BigInts in <<,>>,>>>,&,|,^ binary ops"
b4deef6168bea22be807a9305540dcd4a630e4eb is "[turbofan] Add deopt reason to CheckIf"

Symbol diff for 6576495f3a7a07adece5f4689019c6f2f71dc439..1560988249c97c5cc1763aa364a0423f9e318c13:
+ 0)        804 (18.7%) t@0x1198340  804 (0->804)       v8/src/objects/bigint.cc
               v8::internal::BigInt::BitwiseXor
+ 1)       1580 (36.7%) t@0x1198664  776 (0->776)       v8/src/objects/bigint.cc
               v8::internal::BigInt::BitwiseOr
+ 2)       2314 (53.7%) t@0x1197fc4  734 (0->732)       v8/src/objects/bigint.cc
               v8::internal::BigInt::BitwiseAnd
+ 3)       2822 (65.5%) t@0x1197b46  508 (0->508)       v8/src/objects/bigint.cc
               v8::internal::BigInt::RightShiftByAbsolute
+ 4)       3294 (76.4%) t@0x1197d42  472 (0->472)       v8/src/objects/bigint.cc
               v8::internal::BigInt::LeftShiftByAbsolute
+ 5)       3730 (86.5%) t@0x1198e54  436 (0->436)       v8/src/objects/bigint.cc
               v8::internal::BigInt::AbsoluteBitwiseOp
~ 6)       3528 (81.9%) t@Group      -202 (0->0)        {{no path}}
               ** symbol gaps (count=9)
+ 7)       3688 (85.6%) t@0x11982a0  160 (0->160)       v8/src/objects/bigint.cc
               v8::internal::BigInt::AbsoluteAddOne
~ 8)       3760 (87.2%) t@0x120bb90  72 (316->388)      v8/src/runtime/runtime-bigint.cc
               v8::internal::Runtime_BigIntBinaryOp
~ 9)       3812 (88.4%) t@0x120bd14  52 (564->616)      v8/src/runtime/runtime-bigint.cc
               v8::internal::Stats_Runtime_BigIntBinaryOp
+ 10)      3862 (89.6%) t@0x1197f48  50 (0->50)         v8/src/objects/bigint.cc
               v8::internal::BigInt::UnsignedRightShift
+ 11)      3908 (90.7%) t@0x1197b18  46 (0->46)         v8/src/objects/bigint.cc
               v8::internal::BigInt::LeftShift
+ 12)      3954 (91.7%) t@0x1197f1a  46 (0->46)         v8/src/objects/bigint.cc
               v8::internal::BigInt::SignedRightShift
+ 13)      3990 (92.6%) R@0x2c45280  36 (0->36)         v8/src/objects/bigint.cc
               std::__ndk1::__function::__func [vtable]
+ 14)      4026 (93.4%) R@0x2c452a4  36 (0->36)         v8/src/objects/bigint.cc
               std::__ndk1::__function::__func [vtable]
+ 15)      4062 (94.2%) R@0x2c452c8  36 (0->36)         v8/src/objects/bigint.cc
               std::__ndk1::__function::__func [vtable]
+ 16)      4098 (95.1%) R@0x2c452ec  36 (0->36)         v8/src/objects/bigint.cc
               std::__ndk1::__function::__func [vtable]
+ 17)      4124 (95.7%) t@0x119925c  26 (0->24)         v8/src/objects/bigint.cc
               std::__ndk1::__function::__func::__clone const
+ 18)      4148 (96.2%) t@0x11991f8  24 (0->24)         v8/src/objects/bigint.cc
               std::__ndk1::__function::__func::__clone const
+ 19)      4172 (96.8%) t@0x1199228  24 (0->24)         v8/src/objects/bigint.cc
               std::__ndk1::__function::__func::__clone const


Symbol diff for 217de927fbe9dfd356f49d5ba8c1145d7b161f1f..b4deef6168bea22be807a9305540dcd4a630e4eb:
~ 0)       2916 (49.1%) t@0x10493f8  2916 (11340->14256) v8/src/compiler/simplified-operator.cc
               v8::internal::compiler::SimplifiedOperatorGlobalCache::SimplifiedOperatorGlobalCache
+ 1)       3628 (61.0%) t@0x10484b4  712 (0->712)       v8/src/compiler/simplified-operator.cc
               v8::internal::compiler::SimplifiedOperatorBuilder::CheckIf
~ 2)       3829 (64.4%) r@Group      201 (2901543->2901744) {{no path}}
               ** merge strings (count=7)
+ 3)       3884 (65.3%) r@0x0        55 (0->0)          {{no path}}
               ** aggregate padding of diff'ed symbols
+ 4)       3934 (66.2%) t@0x104cbd8  50 (0->48)         v8/src/compiler/simplified-operator.cc
               v8::internal::compiler::Operator1::PrintParameter const
+ 5)       3966 (66.7%) R@0x2c33e4c  32 (0->32)         v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeIfOperator [vtable]
+ 6)       3998 (67.3%) R@0x2c33e6c  32 (0->32)         v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeIfOperator [vtable]
+ 7)       4030 (67.8%) R@0x2c33e8c  32 (0->32)         v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeIfOperator [vtable]
+ 8)       4062 (68.3%) R@0x2c33ecc  32 (0->32)         v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeIfOperator [vtable]
- 9)       4030 (67.8%) R@0x0        -32 (32->0)        v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeIfOperator [vtable]
- 10)      3998 (67.3%) R@0x0        -32 (32->0)        v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeIfOperator [vtable]
- 11)      3966 (66.7%) R@0x0        -32 (32->0)        v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeIfOperator [vtable]
- 12)      3934 (66.2%) R@0x0        -32 (32->0)        v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeIfOperator [vtable]
+ 13)      3966 (66.7%) R@0x2c33d8c  32 (0->32)         v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeOperator [vtable]
+ 14)      3998 (67.3%) R@0x2c33dec  32 (0->32)         v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeOperator [vtable]
+ 15)      4030 (67.8%) R@0x2c33e0c  32 (0->32)         v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeOperator [vtable]
+ 16)      4062 (68.3%) R@0x2c33e2c  32 (0->32)         v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeOperator [vtable]
- 17)      4030 (67.8%) R@0x0        -32 (32->0)        v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeOperator [vtable]
- 18)      3998 (67.3%) R@0x0        -32 (32->0)        v8/src/compiler/common-operator.cc
               v8::internal::compiler::CommonOperatorGlobalCache::DeoptimizeOperator [vtable]
- 19)      3966 (66.7%) R@0x0        -32 (32->0)        v8/src/compiler/common-operator.cc
...



From what I can tell, the increase here is just due to a good amount of code being added. CC'ing CL authors as FYI, but closing as Won't Fix.

Makes sense. It's a bit sad that it adds up to 40KB, but I guess that's just what happens when new features are added to the platform...

 Issue 774280  has been merged into this issue.