Add Blimp feedback data about visible BlimpContents.

blimp/client/core/feedback/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
 
 source_set("feedback") {
   visibility = [ "//blimp/client/core/*" ]
 
   sources = [
     "blimp_feedback_data.cc",
     "blimp_feedback_data.h",
   ]
 
   deps = [
     "//base",
+    "//blimp/client/core/contents",
   ]
 
   if (is_android) {
     sources += [
       "android/blimp_feedback_data_android.cc",
       "android/blimp_feedback_data_android.h",
     ]
 
     deps += [ ":feedback_jni_headers" ]
   }
 }
 
 source_set("unit_tests") {
   visibility = [ "//blimp/client/core:unit_tests" ]
 
   testonly = true
 
   sources = [
     "blimp_feedback_data_unittest.cc",
   ]
 
   deps = [
     ":feedback",
+    "//base",
+    "//blimp/client/core/compositor",
+    "//blimp/client/core/contents",
+    "//blimp/client/test/compositor",
+    "//skia",
+    "//testing/gmock",
     "//testing/gtest",
   ]
 }
 
 if (is_android) {
   android_library("feedback_java") {
     visibility = [ "//blimp/client/core/*" ]
 
     java_files = [ "android/java/src/org/chromium/blimp/core/feedback/BlimpFeedbackData.java" ]
 
     deps = [
       "//base:base_java",
     ]
   }
 
   generate_jni("feedback_jni_headers") {
     visibility = [ ":*" ]
 
     sources = [
       "android/java/src/org/chromium/blimp/core/feedback/BlimpFeedbackData.java",
     ]
 
     jni_package = "blimp/client/core"
   }
 }