Return non-zero when error to inform ninja of the failure.
Make linux_dump_symbols default to be 1

The linux_dump_sybols is set to 0 in common.gypi:1033, so the default
value in nw.gypi will be ignored anyways. Removing the % could make this
option valid.
Merge pull request #1832 from libm/fix_nw_symbols

Make linux_dump_symbols default to be 1
Merge pull request #1828 from libm/fix_nonzero

Return non-zero when error to inform ninja of the failure.
Append test case for issue 1669
Add test case for issue 1575
Merge pull request #1853 from gitchs/nw_fork

Add test case for issue 1575
Merge pull request #1852 from gitchs/i1669

Append test case for issue 1669
Fix: frameless window not draggable after resizing

cherry-pick https://chromiumcodereview.appspot.com/12314115/
Fix: set force close only when dealing with top frames

Fix the previous commit in a better way to simulate the previous
solution (but do it from renderer): only try to set the flag on
the first time.

Conflicts:
	src/renderer/shell_content_renderer_client.cc
Fix previous commit
Rename chromedriver2_server to chromedriver following upstream's change.

https://src.chromium.org/viewvc/chrome?revision=225192&view=revision