crash-reporter: Update gyp files to use libchromeos from src/platform2

libchromeos was moved from src/platform to src/platform2. This CL updates
the gyp files to use the new location.

BUG=chromium:370258
TEST=FEATURES=test emerge-amd64-generic platform2
TEST=trybot run on daisy, link, mario and duck

CQ-DEPEND=CL:202334

Change-Id: I8536a08aee17073be8544b7e60b205aafb2e0828
Reviewed-on: https://chromium-review.googlesource.com/202337
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Bertrand Simonnet <bsimonnet@chromium.org>
Commit-Queue: Bertrand Simonnet <bsimonnet@chromium.org>
1 file changed