Combine ViewHostMsg_{Paint,Scroll}Rect into one IPC....

chrome/browser/renderer_host/render_widget_host_view_gtk.cc

 // Copyright (c) 2006-2008 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 "chrome/browser/renderer_host/render_widget_host_view_gtk.h"
 
 // If this gets included after the gtk headers, then a bunch of compiler
 // errors happen because of a "#define Status int" in Xlib.h, which interacts
 // badly with URLRequestStatus::Status.
 #include "chrome/common/render_messages.h"
@@ skipping 487 matching lines @@
   if (current_cursor_.GetCursorType() == GDK_LAST_CURSOR)
     ShowCurrentCursor();
 }
 
 void RenderWidgetHostViewGtk::IMEUpdateStatus(int control,
                                               const gfx::Rect& caret_rect) {
   im_context_->UpdateStatus(control, caret_rect);
   key_bindings_handler_->set_enabled(control != IME_DISABLE);
 }
 
-void RenderWidgetHostViewGtk::DidPaintRect(const gfx::Rect& rect) {
+void RenderWidgetHostViewGtk::DidPaintBackingStoreRects(
+    const std::vector<gfx::Rect>& rects) {
   if (is_hidden_)
     return;
 
-  if (about_to_validate_and_paint_)
-    invalid_rect_ = invalid_rect_.Union(rect);
-  else
-    Paint(rect);
+  for (size_t i = 0; i < rects.size(); ++i) {
+    if (about_to_validate_and_paint_) {
+      invalid_rect_ = invalid_rect_.Union(rects[i]);
+    } else {
+      Paint(rects[i]);
+    }
+  }
 }
 
-void RenderWidgetHostViewGtk::DidScrollRect(const gfx::Rect& rect, int dx,
-                                            int dy) {
+void RenderWidgetHostViewGtk::DidScrollBackingStoreRect(const gfx::Rect& rect,
+                                                        int dx, int dy) {
   if (is_hidden_)
     return;
 
+  // TODO(darin): Implement the equivalent of Win32's ScrollWindowEX.  Can that
+  // be done using XCopyArea?  Perhaps similar to BackingStore::ScrollRect?
   Paint(rect);
 }
 
 void RenderWidgetHostViewGtk::RenderViewGone() {
   Destroy();
   plugin_container_manager_.set_host_widget(NULL);
 }
 
 void RenderWidgetHostViewGtk::Destroy() {
   // If |parent_| is non-null, we are a popup and we must disconnect from our
@@ skipping 154 matching lines @@
     const NativeWebKeyboardEvent& event) {
   if (!host_)
     return;
 
   EditCommands edit_commands;
   if (key_bindings_handler_->Match(event, &edit_commands)) {
     host_->ForwardEditCommandsForNextKeyEvent(edit_commands);
   }
   host_->ForwardKeyboardEvent(event);
 }