Fix missing dependencies for //components/crash.

components/crash/content/app/BUILD.gn

Index: components/crash/content/app/BUILD.gn
diff --git a/components/crash/content/app/BUILD.gn b/components/crash/content/app/BUILD.gn
index b593f40a3f6cdc14af5870e059a6bd4213d98a73..482efab2acc5392380c7136ff9edaed9b4c77c48 100644
--- a/components/crash/content/app/BUILD.gn
+++ b/components/crash/content/app/BUILD.gn
@@ -15,12 +15,12 @@ source_set("lib") {
   ]
 
   include_dirs = [ "../../../../breakpad/src" ]
+
+  deps = [
+    "//base",
+  ]
 }
 
-# Note: if you depend on this target, you need to either link in
-# content.gyp:content_common, or add content/public/common/content_switches.cc
-# to your sources.
-#
 # GYP version: components/crash.gypi:crash_component
 source_set("app") {
   sources = [
@@ -63,7 +63,10 @@ source_set("app") {
 # all platforms, or preferably, depend on crash_component to get Breakpad
 # everywhere except for Mac, where you will get Crashpad.
 source_set("app_non_mac") {
-  visibility = [ ":*" ]
+  visibility = [
+    ":*",
+    "//components/crash/content/browser",

[Dirk Pranke, 2015/10/27 21:33:58]

this is needed to make `gn check` happy, since crash_handler_host_linux.cc is
including breakpad_linux_impl.h.

I figured that that would be fixed as part of cleaning this up, so this change
would be ok. Let me know if you prefer a different approach.

+  ]
 
   sources = [
     "breakpad_linux_impl.h",
@@ -92,6 +95,7 @@ source_set("app_non_mac") {
     ":lib",
     "//base",
     "//base:base_static",
+    "//content/public/common",
   ]
 
   if (is_android) {