DevTools: Add test multi-target-breakpoint-manager.html

BUG=

Review URL: https://codereview.chromium.org/332173002

git-svn-id: svn://svn.chromium.org/blink/trunk@176204 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Don't create TimelineModel.RecordImpl in TimelinePresentationModel.js

TimelinePresentationModel.Record now has three implementations: one for root record, one for coealesced record and one for representing actual TimelineModel.Record. This allows it to work fine with Timeline based on trace events.

BUG=361045
R=caseq@chromium.org

Review URL: https://codereview.chromium.org/337023004

git-svn-id: svn://svn.chromium.org/blink/trunk@176205 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Oilpan: move page's ValidationMessageClient to the heap.

Avoids keeping a bare pointer to the current anchor from the client
implementation object.

R=ager@chromium.org,zerny@chromium.org,haraken@chromium.org,tkent@chromium.org
BUG=340522

Review URL: https://codereview.chromium.org/334153003

git-svn-id: svn://svn.chromium.org/blink/trunk@176206 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove old functions in the process of renaming WebFontFamily to WebFallbackFont

Second blink side change, part 3 of the series in total.

BUG=382411
R=eae,behdad,tkent

Review URL: https://codereview.chromium.org/323963002

git-svn-id: svn://svn.chromium.org/blink/trunk@176207 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Devtools: Update breakpoints only in one specific target on UiSourceCodeMappingChanged

BUG=

Review URL: https://codereview.chromium.org/332203002

git-svn-id: svn://svn.chromium.org/blink/trunk@176208 bbb929c8-8fbe-4397-9dbb-9b2b20218538