Add the virtual keyboard to BrowserFrameChromeos.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 1857edecffe7179f0aa5dfdb10db9289e42402a4..316b54c95d8ba0491c1e28de926353011a0116f2 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -3198,6 +3198,8 @@
         'browser/ui/views/frame/opaque_browser_frame_view.h',
         'browser/ui/views/frame/popup_non_client_frame_view.cc',
         'browser/ui/views/frame/popup_non_client_frame_view.h',
+        'browser/ui/views/frame/touch_browser_frame_view.cc',
+        'browser/ui/views/frame/touch_browser_frame_view.h',
         'browser/ui/views/fullscreen_exit_bubble.cc',
         'browser/ui/views/fullscreen_exit_bubble.h',
         'browser/ui/views/generic_info_view.cc',
@@ -4291,6 +4293,12 @@
                 '-fno-ipa-cp',
               ],
             }],
+            ['OS=="linux" and touchui==1',{
+              'sources/': [
+                ['include', '^browser/ui/views/frame/touch_browser_frame_view.cc'],
+                ['include', '^browser/ui/views/frame/touch_browser_frame_view.h'],
+              ],
+            }],
           ],
           # Exclude files that should be excluded for all non-Windows platforms.
           'sources!': [