Extensions: Do not depend on device_serial_mojo target when extensions are turned off.

BUG=334407

Review URL: https://codereview.chromium.org/472053004

Cr-Commit-Position: refs/heads/master@{#290121}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@290121 0039d316-1c4b-4281-b951-d872f2087c98

extensions/BUILD.gn

@@ -32,9 +32,11 @@ grit("extensions_renderer_resources") {
     "extensions_renderer_resources.pak",
   ]
   grit_flags = [ "-E", "mojom_root=" + rebase_path(root_gen_dir) ]
+  if (enable_extensions) {
     deps = [
       "//device/serial:serial_mojo",
     ]
+  }
 }
 
 source_set("test_support") {

extensions/extensions.gyp

@@ -20,8 +20,6 @@
         '../components/components.gyp:url_matcher',
         '../content/content.gyp:content_common',
         '../crypto/crypto.gyp:crypto',
-        # For Mojo generated headers for generated_api.cc.
-        '../device/serial/serial.gyp:device_serial_mojo',
         '../ipc/ipc.gyp:ipc',
         '../net/net.gyp:net',
         '../third_party/re2/re2.gyp:re2',
@@ -216,6 +214,8 @@
       'conditions': [
         ['enable_extensions==1', {
           'dependencies': [
+            # For Mojo generated headers for generated_api.cc.
+            '../device/serial/serial.gyp:device_serial_mojo',
             '../device/usb/usb.gyp:device_usb',
           ],
           'sources!': [

extensions/extensions_resources.gyp

@@ -7,9 +7,6 @@
     {
       'target_name': 'extensions_resources',
       'type': 'none',
-      'dependencies': [
-        '../device/serial/serial.gyp:device_serial_mojo',
-      ],
       'variables': {
         'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/extensions',
       },
@@ -33,6 +30,13 @@
         },
       ],
       'includes': [ '../build/grit_target.gypi' ],
+      'conditions': [
+        ['enable_extensions==1', {
+          'dependencies': [
+            '../device/serial/serial.gyp:device_serial_mojo',
+          ],
+        }],
+      ],
     }
   ]
 }