DevToolsAgent crash fixed: reset RenderView when it's destroyed

- DevToolsAgent is notified in render thread when RenderView  is being detroyed.
- Methods of RenderView are called only on render thread in DevToolsAgent(earlier routing_id() was called on IO thread)

BUG=8378
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=10980

[Søren Thygesen Gjesse, 2009-03-05 10:14:49]

LGTM

http://codereview.chromium.org/39182/diff/1/3
File chrome/renderer/dev_tools_agent.h (right):

http://codereview.chromium.org/39182/diff/1/3#newcode63
Line 63: int routing_id_; // View routing id that we can access from IO thread.
Two spaces before comment.

[yurys, 2009-03-05 10:43:29]

http://codereview.chromium.org/39182/diff/1/3
File chrome/renderer/dev_tools_agent.h (right):

http://codereview.chromium.org/39182/diff/1/3#newcode63
Line 63: int routing_id_; // View routing id that we can access from IO thread.
On 2009/03/05 10:14:49, Søren Gjesse wrote:
> Two spaces before comment.

Done.

[Dean McNamee, 2009-03-05 11:43:29]

http://codereview.chromium.org/39182/diff/9/1005
File chrome/renderer/dev_tools_agent.cc (right):

http://codereview.chromium.org/39182/diff/9/1005#newcode29
Line 29: // Called on render thread.
on the render thread

http://codereview.chromium.org/39182/diff/9/1005#newcode80
Line 80: // Called on IO thread.
on the IO thread.

http://codereview.chromium.org/39182/diff/9/1005#newcode92
Line 92: // view_ may have been cleared after this method execution was
scheduled.
|view_|

http://codereview.chromium.org/39182/diff/9/1004
File chrome/renderer/dev_tools_agent.h (right):

http://codereview.chromium.org/39182/diff/9/1004#newcode63
Line 63: int routing_id_; //  View routing id that we can access from IO thread.
This is a style violation, two spaces before //