Task Manager: show out-of-process iframes.
commit02d7b6e1426b2af317dcc12af87f154c003c08ac
authornick@chromium.org <nick@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Tue, 24 Jun 2014 21:01:50 +0000 (24 21:01 +0000)
committernick@chromium.org <nick@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Tue, 24 Jun 2014 21:01:50 +0000 (24 21:01 +0000)
tree442fe779b8ba363fbe06f9923de195b0f4029199
parentb10aace3b23f7c6ef3e96c9d97edae21a5b647fb
Task Manager: show out-of-process iframes.

If you open one tab with one cross-site iframe,
it looks like this: http://imgur.com/Gm1mXwm

For each WebContents, one "Subframe: " taskmanager row
is shown per subframe SiteInstance.

To track just the set of active RenderFrameHosts, a new
WebContentsObserver method (RenderFrameHostChanged) is added.

Review URL: https://codereview.chromium.org/300113007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@279488 0039d316-1c4b-4281-b951-d872f2087c98
chrome/app/generated_resources.grd
chrome/browser/task_manager/web_contents_resource_provider.cc
chrome/browser/task_manager/web_contents_resource_provider.h
content/browser/frame_host/frame_tree_unittest.cc
content/browser/frame_host/render_frame_host_manager.cc
content/browser/frame_host/render_frame_host_manager.h
content/browser/web_contents/web_contents_impl.cc
content/browser/web_contents/web_contents_impl.h
content/public/browser/web_contents_observer.h