Move DevTools out of ash and turn it to a component.

components/ui_devtools/devtools/BUILD.gn

+import("//build/config/ui.gni")
+
+source_set("devtools") {

[sadrul, 2017/06/05 21:37:42]

Rename this directory: //components/ui_devtools/views

[thanhph, 2017/06/06 20:45:53]

Done.

+  defines = [ "UI_DEVTOOLS_IMPLEMENTATION" ]

[sadrul, 2017/06/05 21:37:42]

You should not need this.

[thanhph, 2017/06/06 20:45:53]

We need this to compile the code in window. You can see the error LNK4217 for
bots win_chromium_compile_dbg_ng and win_clang in patch set 6 and 7.

+
+  cflags = []
+  if (is_win) {
+    cflags += [ "/wd4800" ]  # Value forced to bool.
+  }
+  if (toolkit_views && use_aura) {

[sadrul, 2017/06/05 21:37:42]

Don't need these checks here.

[thanhph, 2017/06/06 20:45:53]

Done.

+    sources = [
+      "ui_devtools_css_agent.cc",
+      "ui_devtools_css_agent.h",
+      "ui_devtools_dom_agent.cc",
+      "ui_devtools_dom_agent.h",
+      "ui_element.cc",
+      "ui_element.h",
+      "ui_element_delegate.h",
+      "view_element.cc",
+      "view_element.h",
+      "widget_element.cc",
+      "widget_element.h",
+      "window_element.cc",
+      "window_element.h",
+    ]
+    deps = [
+      "//components/ui_devtools",
+      "//skia",
+      "//ui/aura",
+      "//ui/views",
+      "//ui/wm:wm",
+    ]
+  }
+}
+
+source_set("unit_tests") {
+  testonly = true
+
+  defines = [ "UI_DEVTOOLS_IMPLEMENTATION" ]

[sadrul, 2017/06/05 21:37:42]

You should not need this.

[thanhph, 2017/06/06 20:45:53]

We need this to compile the code in window.

+
+  cflags = []
+  if (is_win) {
+    cflags += [ "/wd4800" ]  # Value forced to bool.
+  }
+  if (toolkit_views && use_aura) {

[sadrul, 2017/06/05 21:37:42]

Don't need these checks here.

[thanhph, 2017/06/06 20:45:53]

Done.

+    sources = [
+      "ui_devtools_unittest.cc",
+    ]
+    deps = [
+      ":devtools",
+      "//components/ui_devtools",
+      "//skia",
+      "//testing/gtest",
+      "//ui/aura",
+      "//ui/views",
+      "//ui/views:test_support",
+      "//ui/wm:wm",
+    ]
+  }
+  configs += [ "//build/config:precompiled_headers" ]
+}