Add the copresence component.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 552575ec99e3dbdf3c353fb4a6a0fcca2d78535d..add621cb585de1c3279ba80714a83274d95c1576 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -2951,6 +2951,7 @@
             '../cc/cc.gyp:cc',
             '../components/components.gyp:autofill_content_browser',
             '../components/components.gyp:component_updater',
+            '../components/components.gyp:copresence',

[jochen (gone - plz use gerrit), 2014/07/31 19:22:46]

i meant: as long as you don't use the component from //chrome/browser, there's
no reason to add a build dependency

[rkc, 2014/07/31 20:13:35]

Ah, but we will be. I'll add it again when we need to. Removed.
Done.

             '../components/components.gyp:dom_distiller_content',
             '../components/components.gyp:keyed_service_content',
             '../components/components.gyp:navigation_interception',
@@ -3282,6 +3283,7 @@
             'chrome_browser_jni_headers',
           ],
           'dependencies!': [
+            '../components/components.gyp:copresence',
             '../components/components.gyp:feedback_component',
             '../components/components.gyp:storage_monitor',
             '../components/components.gyp:usb_service',