Linux: middle-click to navigate

Linux: middle-click to navigate

At the request of several people, Ctrl-middle-clicking on an unused part of
the page will now open a new foreground tab if the current selection
is a valid URL.

[tony, 2009-06-26 23:41:46]

LGTM, just some nits.

http://codereview.chromium.org/147246/diff/1001/1002
File chrome/browser/renderer_host/render_view_host.cc (right):

http://codereview.chromium.org/147246/diff/1001/1002#newcode1233
Line 1233: 
Nit: remove extra blank line

http://codereview.chromium.org/147246/diff/1001/1005
File chrome/browser/renderer_host/render_widget_host.cc (right):

http://codereview.chromium.org/147246/diff/1001/1005#newcode32
Line 32: using WebKit::WebMouseEvent;
Nit: This seems to be the same as 2 lines below.

http://codereview.chromium.org/147246/diff/1001/1007
File chrome/browser/tab_contents/tab_contents_view_gtk.cc (right):

http://codereview.chromium.org/147246/diff/1001/1007#newcode352
Line 352: gpointer arg) {
Can you use TabContentsViewGtk::ClipboardRequestCallback* instead of gpointer
here to avoid the reinterpret_cast below?

http://codereview.chromium.org/147246/diff/1001/1010
File webkit/glue/webview_impl.cc (right):

http://codereview.chromium.org/147246/diff/1001/1010#newcode519
Line 519: const bool processed =
This is const, the bool at line 459 isn't.  I'd probably just make them both
non-const.