Get rid of the last view_messages.h include in chrome, other than...

Get rid of the last view_messages.h include in chrome, other than tab_contents_views_mac.mm and render_view_host_delegate_helper.cc, both of which Avi is working on. I added a test method to fake a UpdateRect IPC message for the thumbnail test.

BUG=98716

Review URL: http://codereview.chromium.org/8819005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@113285 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/tab_contents/thumbnail_generator_unittest.cc

@@ -94,12 +94,6 @@ class ThumbnailGeneratorTest : public testing::Test {
   enum TransportType { TRANSPORT_BLACK, TRANSPORT_WHITE, TRANSPORT_OTHER };
 
   void SendPaint(TransportType type) {
-    ViewHostMsg_UpdateRect_Params params;
-    params.bitmap_rect = gfx::Rect(0, 0, kBitmapWidth, kBitmapHeight);
-    params.view_size = params.bitmap_rect.size();
-    params.copy_rects.push_back(params.bitmap_rect);
-    params.flags = 0;
-
     scoped_ptr<skia::PlatformCanvas> canvas(
         transport_dib_->GetPlatformCanvas(kBitmapWidth, kBitmapHeight));
     switch (type) {
@@ -117,10 +111,8 @@ class ThumbnailGeneratorTest : public testing::Test {
         break;
     }
 
-    params.bitmap = transport_dib_->id();
-
-    ViewHostMsg_UpdateRect msg(1, params);
-    widget_->OnMessageReceived(msg);
+    gfx::Rect rect(0, 0, kBitmapWidth, kBitmapHeight);
+    SimulateUpdateRect(widget_.get(), transport_dib_->id(), rect);
   }
 
   TransportType ClassifyFirstPixel(const SkBitmap& bitmap) {

content/browser/renderer_host/test_render_view_host.cc

@@ -40,6 +40,20 @@ void InitNavigateParams(ViewHostMsg_FrameNavigate_Params* params,
   params->content_state = webkit_glue::CreateHistoryStateForURL(GURL(url));
 }
 
+void SimulateUpdateRect(RenderWidgetHost* widget,
+                        TransportDIB::Id bitmap,
+                        const gfx::Rect& rect) {
+  ViewHostMsg_UpdateRect_Params params;
+  params.bitmap_rect = rect;
+  params.view_size = params.bitmap_rect.size();
+  params.copy_rects.push_back(params.bitmap_rect);
+  params.flags = 0;
+  params.bitmap = bitmap;
+
+  ViewHostMsg_UpdateRect msg(1, params);
+  widget->OnMessageReceived(msg);
+}
+
 TestRenderViewHost::TestRenderViewHost(SiteInstance* instance,
                                        RenderViewHostDelegate* delegate,
                                        int routing_id)

content/browser/renderer_host/test_render_view_host.h

@@ -38,6 +38,11 @@ void InitNavigateParams(ViewHostMsg_FrameNavigate_Params* params,
                         const GURL& url,
                         content::PageTransition transition_type);
 
+// Utility function to fake the ViewHostMsg_UpdateRect IPC arriving at a RWH.
+void SimulateUpdateRect(RenderWidgetHost* widget,
+                        TransportDIB::Id bitmap,
+                        const gfx::Rect& rect);
+
 // This file provides a testing framework for mocking out the RenderProcessHost
 // layer. It allows you to test RenderViewHost, TabContents,
 // NavigationController, and other layers above that without running an actual