Move WebViewFrameWidget to use WebViewBase rather than WebViewImpl.

third_party/WebKit/Source/core/exported/WebViewBase.h

Index: third_party/WebKit/Source/core/exported/WebViewBase.h
diff --git a/third_party/WebKit/Source/core/exported/WebViewBase.h b/third_party/WebKit/Source/core/exported/WebViewBase.h
index ae72b40d8b1c173ec308396f19142eb2e5d82937..9fed5b7e44fdf8556914d274e1575913ab7c3982 100644
--- a/third_party/WebKit/Source/core/exported/WebViewBase.h
+++ b/third_party/WebKit/Source/core/exported/WebViewBase.h
@@ -6,6 +6,7 @@
 #define WebViewBase_h
 
 #include "platform/transforms/TransformationMatrix.h"
+#include "platform/wtf/RefCounted.h"
 #include "public/platform/WebDisplayMode.h"
 #include "public/platform/WebInputEventResult.h"
 #include "public/web/WebElement.h"
@@ -13,18 +14,24 @@
 
 namespace blink {
 
+class AnimationWorkletProxyClient;
+class CompositorAnimationHost;
+class CompositorWorkerProxyClient;
 class CompositorAnimationTimeline;
 class ContextMenuProvider;
 class DevToolsEmulator;
 class Frame;
 class GraphicsLayer;
+class HitTestResult;
 class Page;
 class PaintLayerCompositor;
 class PagePopup;
 class PagePopupClient;
 class PageScaleConstraintsSet;
 class WebInputEvent;
+class WebInputMethodControllerImpl;
 class WebKeyboardEvent;
+class WebLayer;
 class WebLocalFrameImpl;
 class WebLayerTreeView;
 class WebPagePopupImpl;
@@ -38,8 +45,10 @@ struct WebRect;
 //
 // Once WebViewImpl is moved from web to core/exported then this class should be
 // removed and clients can once again depend on WebViewImpl.
-class WebViewBase : public WebView {
+class WebViewBase : public WebView, public RefCounted<WebViewBase> {
  public:
+  virtual ~WebViewBase() {}
+
   virtual void SetBaseBackgroundColor(WebColor) = 0;
   virtual void SetBaseBackgroundColorOverride(WebColor) = 0;
   virtual void ClearBaseBackgroundColorOverride() = 0;
@@ -146,6 +155,24 @@ class WebViewBase : public WebView {
   virtual double LastFrameTimeMonotonic() const = 0;
 
   static const WebInputEvent* CurrentInputEvent();
+
+  virtual void SetCompositorVisibility(bool) = 0;
+  using WebWidget::SetSuppressFrameRequestsWorkaroundFor704763Only;
+  using WebWidget::RecordWheelAndTouchScrollingCount;
+  using WebWidget::GetCompositionCharacterBounds;
+  // Returns the currently active WebInputMethodController which is the one
+  // corresponding to the focused frame. It will return nullptr if there is no
+  // focused frame, or if there is one but it belongs to a different local
+  // root.
+  virtual WebInputMethodControllerImpl* GetActiveWebInputMethodController()
+      const = 0;
+  virtual void ScheduleAnimationForWidget() = 0;
+  virtual CompositorWorkerProxyClient* CreateCompositorWorkerProxyClient() = 0;
+  virtual AnimationWorkletProxyClient* CreateAnimationWorkletProxyClient() = 0;
+  virtual void SetRootGraphicsLayer(GraphicsLayer*) = 0;
+  virtual void SetRootLayer(WebLayer*) = 0;
+  virtual CompositorAnimationHost* AnimationHost() const = 0;
+  virtual HitTestResult CoreHitTestResultAt(const WebPoint&) = 0;
 };
 }