[content shell] implement auto resize related WebTestDelegate interfaces

content/renderer/render_widget.cc

 // Copyright (c) 2012 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 "content/renderer/render_widget.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 1382 matching lines @@
   //    on the call stack.
   // 2) Allows us to collect more damage rects before painting to help coalesce
   //    the work that we will need to do.
   invalidation_task_posted_ = true;
   base::MessageLoop::current()->PostTask(
       FROM_HERE, base::Bind(&RenderWidget::InvalidationCallback, this));
 }
 
 void RenderWidget::didAutoResize(const WebSize& new_size) {
   if (size_.width() != new_size.width || size_.height() != new_size.height) {
+    size_ = new_size;
+
+    // If we don't clear PaintAggregator after changing autoResize state, then
+    // we might end up in a situation where bitmap_rect is larger than the
+    // view_size. By clearing PaintAggregator, we ensure that we don't end up
+    // with invalid damage rects.
+    paint_aggregator_.ClearPendingUpdate();
+
     if (RenderThreadImpl::current()->short_circuit_size_updates()) {
-      setWindowRect(WebRect(rootWindowRect().x,
-                            rootWindowRect().y,
-                            new_size.width,
-                            new_size.height));
-    } else {
-      size_ = new_size;
-
-      // If we don't clear PaintAggregator after changing autoResize state, then
-      // we might end up in a situation where bitmap_rect is larger than the
-      // view_size. By clearing PaintAggregator, we ensure that we don't end up
-      // with invalid damage rects.
-      paint_aggregator_.ClearPendingUpdate();
+      WebRect new_pos(rootWindowRect().x,
+                      rootWindowRect().y,
+                      new_size.width,
+                      new_size.height);
+      view_screen_rect_ = new_pos;
+      window_screen_rect_ = new_pos;
     }
 
-    if (auto_resize_mode_)
-      AutoResizeCompositor();
+    AutoResizeCompositor();
 
     if (!RenderThreadImpl::current()->short_circuit_size_updates())
       need_update_rect_for_auto_resize_ = true;
   }
 }
 
 void RenderWidget::AutoResizeCompositor()  {
   physical_backing_size_ = gfx::ToCeiledSize(gfx::ScaleSize(size_,
       device_scale_factor_));
   if (compositor_)
@@ skipping 932 matching lines @@
 
   if (!context->Initialize(
           attributes,
           false /* bind generates resources */,
           CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE))
     return NULL;
   return context.release();
 }
 
 }  // namespace content