Merge commit 'fe8eaf3b5dc52cecaf15ccabe9a8717cce701f6c' * commit 'fe8eaf3b5dc52cecaf15ccabe9a8717cce701f6c': add mouse up/down/click support in DumpRenderTree
Merge commit 'fe8eaf3b5dc52cecaf15ccabe9a8717cce701f6c' * commit 'fe8eaf3b5dc52cecaf15ccabe9a8717cce701f6c': add mouse up/down/click support in DumpRenderTree