[blink] Remove SendOrientationChangeEvent from Blink public API

Now that widget messages are handled in Blink, there's no need to expose
this method through the public API.

Change-Id: Ica1b737f0095d853fd021b8ce96e694a25772438
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518791Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824021}

third_party/blink/public/web/web_local_frame.h

@@ -281,11 +281,6 @@ class WebLocalFrame : public WebFrame {
 
   virtual void BlinkFeatureUsageReport(blink::mojom::WebFeature feature) = 0;
 
-  // Orientation Changes ----------------------------------------------------
-
-  // Notify the frame that the screen orientation has changed.
-  virtual void SendOrientationChangeEvent() = 0;
-
   // CSS3 Paged Media ----------------------------------------------------
 
   // Returns the type of @page size styling for the given page.

third_party/blink/renderer/core/frame/web_frame_widget_base.cc

@@ -2338,7 +2338,7 @@ void WebFrameWidgetBase::SetPageScaleStateAndLimits(
 }
 
 void WebFrameWidgetBase::OrientationChanged() {
-  LocalRoot()->SendOrientationChangeEvent();
+  local_root_->SendOrientationChangeEvent();
 }
 
 void WebFrameWidgetBase::DidUpdateSurfaceAndScreen(

third_party/blink/renderer/core/frame/web_local_frame_impl.h

@@ -135,7 +135,6 @@ class CORE_EXPORT WebLocalFrameImpl final
   void SetReferrerForRequest(WebURLRequest&, const WebURL& referrer) override;
   bool IsNavigationScheduledWithin(base::TimeDelta interval) const override;
   void BlinkFeatureUsageReport(blink::mojom::WebFeature feature) override;
-  void SendOrientationChangeEvent() override;
   PageSizeType GetPageSizeType(uint32_t page_index) override;
   void GetPageDescription(uint32_t page_index,
                           WebPrintPageDescription*) override;
@@ -416,6 +415,8 @@ class CORE_EXPORT WebLocalFrameImpl final
     return GetFrame() ? GetFrame()->View() : nullptr;
   }
 
+  void SendOrientationChangeEvent();
+
   void SetDevToolsAgentImpl(WebDevToolsAgentImpl*);
   WebDevToolsAgentImpl* DevToolsAgentImpl();
 

third_party/blink/renderer/modules/screen_orientation/screen_orientation_controller_test.cc

@@ -243,10 +243,7 @@ TEST_F(ScreenOrientationControllerTest, PageVisibilityCrash) {
   // referenced before this.
   ScreenOrientation::Create(frame->DomWindow());
   page->SetVisibilityState(mojom::blink::PageVisibilityState::kHidden, false);
-  web_view_helper.GetWebView()
-      ->MainFrame()
-      ->ToWebLocalFrame()
-      ->SendOrientationChangeEvent();
+  web_view_helper.LocalMainFrame()->SendOrientationChangeEvent();
   page->SetVisibilityState(mojom::blink::PageVisibilityState::kVisible, false);
 
   // When the iframe's orientation is initialized, it should be properly synced.