Remove kEnhancedSelectionInsertionHandle flag.

Magnifier is in prod for a while, we don't need this feature to behind
a flag anymore.

Bug: 967056
Change-Id: I8697aaab5aacbca56693118498729b9bd1aa1768
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1654628Reviewed-by: Bo <boliu@chromium.org>
Commit-Queue: Shimi Zhang <ctzsm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#668496}

content/browser/android/content_feature_list.cc

@@ -23,7 +23,6 @@ namespace {
 // in other locations in the code base (e.g. content_features.h).
 const base::Feature* kFeaturesExposedToJava[] = {
     &features::kBackgroundMediaRendererHasModerateBinding,
-    &kEnhancedSelectionInsertionHandle,
     &kServiceGroupImportance,
 };
 
@@ -40,8 +39,6 @@ const base::Feature* FindFeatureExposedToJava(const std::string& feature_name) {
 }  // namespace
 
 // Alphabetical:
-const base::Feature kEnhancedSelectionInsertionHandle{
-    "EnhancedSelectionInsertionHandle", base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kRequestUnbufferedDispatch{
     "RequestUnbufferedDispatch", base::FEATURE_ENABLED_BY_DEFAULT};
 const base::Feature kServiceGroupImportance{"ServiceGroupImportance",

content/browser/android/content_feature_list.h

@@ -11,7 +11,6 @@ namespace content {
 namespace android {
 
 // Alphabetical:
-extern const base::Feature kEnhancedSelectionInsertionHandle;
 extern const base::Feature kRequestUnbufferedDispatch;
 extern const base::Feature kServiceGroupImportance;
 

content/browser/renderer_host/render_widget_host_view_android.cc

@@ -121,10 +121,8 @@ std::unique_ptr<ui::TouchSelectionController> CreateSelectionController(
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableLongpressDragSelection);
   config.hide_active_handle =
-      base::FeatureList::IsEnabled(
-          content::android::kEnhancedSelectionInsertionHandle) &&
       base::android::BuildInfo::GetInstance()->sdk_int() >=
-          base::android::SDK_VERSION_P;
+      base::android::SDK_VERSION_P;
   return std::make_unique<ui::TouchSelectionController>(client, config);
 }
 

content/public/android/java/src/org/chromium/content/browser/ContentClassFactory.java

@@ -49,10 +49,7 @@ public class ContentClassFactory {
      */
     public SelectionInsertionHandleObserver createHandleObserver(
             SelectionPopupControllerImpl.ReadbackViewCallback callback) {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P
-                || !ContentFeatureList.isEnabled(
-                           ContentFeatureList.ENHANCED_SELECTION_INSERTION_HANDLE))
-            return null;
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P) return null;
         return new MagnifierAnimator(new MagnifierWrapperImpl(callback));
     }
 

content/public/android/java/src/org/chromium/content/browser/ContentFeatureList.java

@@ -30,9 +30,6 @@ public abstract class ContentFeatureList {
     }
 
     // Alphabetical:
-    public static final String ENHANCED_SELECTION_INSERTION_HANDLE =
-            "EnhancedSelectionInsertionHandle";
-
     public static final String BACKGROUND_MEDIA_RENDERER_HAS_MODERATE_BINDING =
             "BackgroundMediaRendererHasModerateBinding";