Switching Clank to use direction-based selection granularity strategy and adding a chrome flag.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 9e0c4207e80039bff552964d85310cd9972ffedf..2c2b627d108e53b22de1cf29e9510a37fd3cd3f1 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -761,6 +761,25 @@ void RenderViewImpl::Initialize(const ViewMsg_New_Params& params,
   if (switches::IsTouchEditingEnabled())
     webview()->settings()->setTouchEditingEnabled(true);
 
+#if defined(OS_ANDROID)
+  WebSettings::SelectionStrategyType selection_strategy_default =
+      WebSettings::SelectionStrategyType::Direction;
+#else
+  WebSettings::SelectionStrategyType selection_strategy_default =
+      WebSettings::SelectionStrategyType::Character;
+#endif
+
+  WebSettings::SelectionStrategyType selection_strategy =
+      selection_strategy_default;
+  const std::string selection_strategy_str =
+      base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+          switches::kTouchTextSelectionStrategy);
+  if (selection_strategy_str == "character")
+    selection_strategy = WebSettings::SelectionStrategyType::Character;
+  else if (selection_strategy_str == "direction")
+    selection_strategy = WebSettings::SelectionStrategyType::Direction;
+  webview()->settings()->setSelectionStrategy(selection_strategy);
+
   if (!params.frame_name.empty())
     webview()->mainFrame()->setName(params.frame_name);