Version 4.9.271

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.271@{#1}
Cr-Branched-From: b24fc48-refs/heads/master@{#33059}

Version 4.9.270

[crankshaft] Don't inline array resize operations if receiver's proto is not a JSObject (Chromium issue 571064).

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.270@{#1}
Cr-Branched-From: bae0d6c-refs/heads/master@{#33058}

Version 4.9.269

[ic] Fixed receiver_map register trashing in KeyedStoreIC megamorphic (Chromium issue 571370).

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.269@{#1}
Cr-Branched-From: c1aded3-refs/heads/master@{#33057}

Version 4.9.268

Use ES2015-style TypedArray prototype chain (issue 4085).

Guard the property RegExp.prototype.unicode behind --harmony-regexp- unicode (issue 4644).

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.268@{#1}
Cr-Branched-From: 2545f18-refs/heads/master@{#33054}

Version 4.9.267

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.267@{#1}
Cr-Branched-From: 47cb4b2-refs/heads/master@{#33047}

Version 4.9.266

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.266@{#1}
Cr-Branched-From: 37d1dd8-refs/heads/master@{#33046}

Version 4.9.265

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.265@{#1}
Cr-Branched-From: 1cf8b10-refs/heads/master@{#33043}

Version 4.9.264

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.264@{#1}
Cr-Branched-From: ca8623e-refs/heads/master@{#33042}

Version 4.9.263

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.263@{#1}
Cr-Branched-From: 61b3112-refs/heads/master@{#33041}

Version 4.9.262

Performance and stability improvements on all platforms.

Cr-Commit-Position: refs/heads/4.9.262@{#1}
Cr-Branched-From: 2c48421-refs/heads/master@{#33040}