DevTools: [SSP] update style rules of SectionPropertyTreeElements

The style rules of tree elements became outdated after the rule was
edited. This patch adds synchronization for them as well.

BUG=430133
R=vsevik

Review URL: https://codereview.chromium.org/692073003

git-svn-id: svn://svn.chromium.org/blink/trunk@184869 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: [SSP] refactoring to remove styleRule.section property

The patch is a first step towards cleaning up StylesSidebarPane and
introduction of structured object instead of styleRule objects.

This patch removes styleRule.section property, and kills unneeded
section.uniqueProperties list.

R=vsevik, pfeldman

Review URL: https://codereview.chromium.org/699873002

git-svn-id: svn://svn.chromium.org/blink/trunk@184875 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: SourcesPanel: Double-click on watch expression name should start editing.

BUG=

Review URL: https://codereview.chromium.org/702603003

git-svn-id: svn://svn.chromium.org/blink/trunk@184879 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: don't change current selection on Timeline flame chart when overview window changes

Shift+drag is more convenient for specifying the range of interest it's better to avoid also binding the selection to the current range in the overview pane.

Waterfall view will still populate its details view with the data for selected range in the overview pane.

BUG=426152

Review URL: https://codereview.chromium.org/695903002

git-svn-id: svn://svn.chromium.org/blink/trunk@184904 bbb929c8-8fbe-4397-9dbb-9b2b20218538