Fix wrong initialization of renderer_initiated_creation
parameter.

Initialize the renderer_initiated_creation parameter as
true only when a RenderFrame was created in the renderer
process. This fixes an issue where the
Render{Frame,View}Created observer from
WebContentsObserver can be called before the process
is alive (and therefore, the RenderFrame can't possibly
have been created).

BUG=492830

Review URL: https://codereview.chromium.org/1159143008

Cr-Commit-Position: refs/heads/master@{#333316}
9 files changed