Progress towards fixing 77536

chrome/browser/renderer_host/render_widget_host_view_mac.mm

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <QuartzCore/QuartzCore.h>
 
 #include "chrome/browser/renderer_host/render_widget_host_view_mac.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 577 matching lines @@
 // RenderWidgetHostViewMac, public:
 
 RenderWidgetHostViewMac::RenderWidgetHostViewMac(RenderWidgetHost* widget)
     : render_widget_host_(widget),
       about_to_validate_and_paint_(false),
       call_set_needs_display_in_rect_pending_(false),
       text_input_type_(WebKit::WebTextInputTypeNone),
       is_loading_(false),
       is_hidden_(false),
       shutdown_factory_(this),
-      needs_gpu_visibility_update_after_repaint_(false) {
+      needs_gpu_visibility_update_after_repaint_(false),
+      compositing_surface_(gfx::kNullPluginWindow) {
   // |cocoa_view_| owns us and we will be deleted when |cocoa_view_| goes away.
   // Since we autorelease it, our caller must put |native_view()| into the view
   // hierarchy right after calling us.
   cocoa_view_ = [[[RenderWidgetHostViewCocoa alloc]
                   initWithRenderWidgetHostViewMac:this] autorelease];
   render_widget_host_->set_view(this);
 
   // Turn on accessibility only if VoiceOver is running.
   if (IsVoiceOverRunning()) {
     BrowserAccessibilityState::GetInstance()->OnScreenReaderDetected();
@@ skipping 681 matching lines @@
 void RenderWidgetHostViewMac::GpuRenderingStateDidChange() {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   if (GetRenderWidgetHost()->is_accelerated_compositing_active()) {
     UpdateRootGpuViewVisibility(
         GetRenderWidgetHost()->is_accelerated_compositing_active());
   } else {
     needs_gpu_visibility_update_after_repaint_ = true;
   }
 }
 
-gfx::PluginWindowHandle RenderWidgetHostViewMac::AcquireCompositingSurface() {
-  return AllocateFakePluginWindowHandle(/*opaque=*/true, /*root=*/true);
-}
-
-void RenderWidgetHostViewMac::ReleaseCompositingSurface(
-    gfx::PluginWindowHandle surface) {
-  DestroyFakePluginWindowHandle(surface);
+gfx::PluginWindowHandle RenderWidgetHostViewMac::GetCompositingSurface() {
+  if (compositing_surface_ == gfx::kNullPluginWindow)
+    compositing_surface_ = AllocateFakePluginWindowHandle(
+        /*opaque=*/true, /*root=*/true);
+  return compositing_surface_;
 }
 
 void RenderWidgetHostViewMac::DrawAcceleratedSurfaceInstance(
       CGLContextObj context,
       gfx::PluginWindowHandle plugin_handle,
       NSSize size) {
   // Called on the display link thread.
   CGLSetCurrentContext(context);
 
   glMatrixMode(GL_PROJECTION);
@@ skipping 1620 matching lines @@
   if (!string) return NO;
 
   // If the user is currently using an IME, confirm the IME input,
   // and then insert the text from the service, the same as TextEdit and Safari.
   [self confirmComposition];
   [self insertText:string];
   return YES;
 }
 
 @end