DevTools: [SSP] refactor internal representations of sections

DevTools: [SSP] refactor internal representations of sections

ATM styles sidebar pane holds a |sections| map which has pseudoIds as
keys and arrays of StylePropertySections as values.

This representation proved to be poor for our needs: we also want to
have models for section separators.

This patch purges |sections| map from SSP and introduces a
|_sectionBlocks| array. Each element of the array is of a new type
WI.SectionBlock, which is essentially an array of sections with a title
element (the title element serves as a separator).

BUG=466435
R=pfeldman

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=191868

[lushnikov, 2015-03-13 17:16:45]

PTAL

[pfeldman, 2015-03-13 17:53:33]

lgtm

https://codereview.chromium.org/1002293002/diff/20001/Source/devtools/front_e...
File Source/devtools/front_end/elements/StylesSidebarPane.js (right):

https://codereview.chromium.org/1002293002/diff/20001/Source/devtools/front_e...
Source/devtools/front_end/elements/StylesSidebarPane.js:1282: appendSection:
function(section)
You encapsulate nothing. Lets remove these.

[lushnikov, 2015-03-13 18:08:08]

https://codereview.chromium.org/1002293002/diff/20001/Source/devtools/front_e...
File Source/devtools/front_end/elements/StylesSidebarPane.js (right):

https://codereview.chromium.org/1002293002/diff/20001/Source/devtools/front_e...
Source/devtools/front_end/elements/StylesSidebarPane.js:1282: appendSection:
function(section)
On 2015/03/13 17:53:33, pfeldman wrote:
> You encapsulate nothing. Lets remove these.

Done.

[lushnikov, 2015-03-13 18:08:16]

The CQ bit was checked by lushnikov@chromium.org

[lushnikov, 2015-03-13 18:08:16]

The patchset sent to the CQ was uploaded after l-g-t-m from
pfeldman@chromium.org
Link to the patchset: https://codereview.chromium.org/1002293002/#ps40001
(title: "address comments")

[commit-bot: I haz the power, 2015-03-13 18:09:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1002293002/40001

[commit-bot: I haz the power, 2015-03-13 21:08:45]

Committed patchset #3 (id:40001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=191868