Reland of "TransitionArray::Search() now returns insertion index if the entry was not found."

Review URL: https://codereview.chromium.org/739013004

Cr-Commit-Position: refs/heads/master@{#25482}
Reland of "Enable inobject double fields unboxing for 64-bit archs."

Review URL: https://codereview.chromium.org/751643005

Cr-Commit-Position: refs/heads/master@{#25483}
Dictionary-mode PropertyDetails printing fixed.

BUG=chromium:435974
LOG=N

Review URL: https://codereview.chromium.org/755583003

Cr-Commit-Position: refs/heads/master@{#25484}
Make use of post-scoping information to compute feedback vector requirements.

This avoids allocating vector ic slots that we don't use.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/758543002

Cr-Commit-Position: refs/heads/master@{#25485}
Correctly find shared function info for debugging when compiling eagerly.

R=ulan@chromium.org
BUG=v8:3717
LOG=N

Review URL: https://codereview.chromium.org/758523004

Cr-Commit-Position: refs/heads/master@{#25486}
Remove v8::StartupData::compressed_size.

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/739253006

Cr-Commit-Position: refs/heads/master@{#25487}
Remove lineprocessor sample.

This sample used to demonstrate the usage of the DebuggerAgent. The latter
has been removed, so this sample has no point anymore.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/754043002

Cr-Commit-Position: refs/heads/master@{#25488}