Fix link errors with Skia in libui_touch_selection.so

When building a debug version of Chromium in Linux with
component=shared_library build flag, there are link errors as follows:

error: undefined reference to 'SkDebugf_FileLine'
error: undefined reference to 'SkToS32'

BUG=None

Review URL: https://codereview.chromium.org/1128203009

Cr-Commit-Position: refs/heads/master@{#329745}

ui/touch_selection/BUILD.gn

@@ -27,6 +27,7 @@ component("touch_selection") {
   defines = [ "UI_TOUCH_SELECTION_IMPLEMENTATION" ]
 
   deps = [
+    "//skia:skia",
     "//base:base",
     "//ui/aura:aura",
     "//ui/aura_extra:aura_extra",
@@ -40,6 +41,7 @@ component("touch_selection") {
 
   if (!use_aura) {
     deps -= [
+      "//skia:skia",
       "//ui/aura:aura",
       "//ui/aura_extra:aura_extra",
       "//ui/compositor:compositor",

ui/touch_selection/ui_touch_selection.gyp

@@ -12,6 +12,7 @@
       'type': '<(component)',
       'dependencies': [
         '../../base/base.gyp:base',
+        '../../skia/skia.gyp:skia',
         '../aura/aura.gyp:aura',
         '../aura_extra/aura_extra.gyp:aura_extra',
         '../base/ui_base.gyp:ui_base',
@@ -41,6 +42,7 @@
       'conditions': [
         ['use_aura==0', {
           'dependencies!': [
+            '../../skia/skia.gyp:skia',
             '../aura/aura.gyp:aura',
             '../aura_extra/aura_extra.gyp:aura_extra',
             '../compositor/compositor.gyp:compositor',