Pepper Flash Mac: Fix crash when playing video on MB retina

content/browser/renderer_host/render_widget_host_unittest.cc

Index: content/browser/renderer_host/render_widget_host_unittest.cc
diff --git a/content/browser/renderer_host/render_widget_host_unittest.cc b/content/browser/renderer_host/render_widget_host_unittest.cc
index f6bb1084ff210c440c59a5a89af27a3a772275c5..e58133d150ef5e6c0fe661b8c6876e5081c99fd1 100644
--- a/content/browser/renderer_host/render_widget_host_unittest.cc
+++ b/content/browser/renderer_host/render_widget_host_unittest.cc
@@ -83,7 +83,7 @@ class RenderWidgetHostProcess : public MockRenderProcessHost {
   // message reply. False implies timeout.
   bool update_msg_should_reply_;
 
-  // Indicates the flags that should be sent with a the repaint request. This
+  // Indicates the flags that should be sent with a repaint request. This
   // only has an effect when update_msg_should_reply_ is true.
   int update_msg_reply_flags_;
 
@@ -106,6 +106,7 @@ void RenderWidgetHostProcess::InitUpdateRectParams(
   params->view_size = gfx::Size(w, h);
   params->flags = update_msg_reply_flags_;
   params->needs_ack = true;
+  params->scale_factor = 1;
 }
 
 bool RenderWidgetHostProcess::WaitForBackingStoreMsg(
@@ -1091,3 +1092,13 @@ TEST_F(RenderWidgetHostTest, MultipleInputEvents) {
   MessageLoop::current()->Run();
   EXPECT_TRUE(host_->unresponsive_timer_fired());
 }
+
+TEST_F(RenderWidgetHostTest, IncorrectBitmapScaleFactor) {
+  ViewHostMsg_UpdateRect_Params params;
+  process_->InitUpdateRectParams(&params);
+  params.scale_factor = params.scale_factor * 2;
+
+  EXPECT_EQ(0, process_->bad_msg_count());
+  host_->OnMsgUpdateRect(params);
+  EXPECT_EQ(1, process_->bad_msg_count());
+}